Simple crud operation in javascript jobs

I am seeking a skilled web developer proficient in custom HTML, CSS, and JavaScript. This project does not have a specified design or e-commerce goal, and the primary objective is to deliver a high-quality, functional website. Key Requirements: - Expertise in HTML, CSS, and JavaScript - Experience in building custom, responsive web sites - Ability to work without a pre-defined design - Strong problem-solving skills - Good communication skills for project updates Please provide examples of your previous work in your bid.

I'm looking for an experienced developer skilled in WordPress and ACF to create a custom page builder for my site. Key Requirements: - ACF Flexible Content/Custom Page Builder expertise for advanced design and customization - Crafting ACF block-based custom page builders - Writing custom theme functions, CSS, and JavaScript to improve site performance and UX - Precise Figma to WordPress conversions - Creating custom post types, taxonomies, and fields with ACF or custom coding The custom page builder should support: - Pre-made templates specifically for blog posts The blog post templates should include: - A related posts section Ideal candidates will possess a strong portfolio of similar projects, and a deep understanding of WordPress development. Please provide examp...

I'm in need of a seasoned QA Automation expert with a minimum of 3 years experience. The ideal candidate should be proficient in UI Automation, specifically with Cypress and JavaScript. API Automation experience, particularly with REST and POSTman, is also required. Key Responsibilities: - UI Automation using Cypress - API Automation with REST and POSTman Essential Skills: - Minimum 3 years experience in Cypress - Highly skilled in Cypress with JavaScript - Excellent communication and analytical skills - Flexible, ownership-driven attitude This is a work from home position, and only Indian resources can apply.

...duration - 3 months+ Remote work I'm in need of a seasoned Angular developer with over 7 years of experience and a solid grasp of JavaScript fundamentals. Your primary responsibilities will be designing and implementing high-quality, scalable web applications. Key Responsibilities: - Develop, test, and deploy Angular-based applications. - Create efficient and reusable JavaScript components. - Tackle complex coding challenges related to advanced JavaScript concepts. - Optimize performance through effective event delegation and DOM interaction. - Write scalable, maintainable code. Skills & Requirements: - Proficient in Angular and JavaScript. - Deep understanding of Prototypal Inheritance and Closures. - Experience with RxJS and NGRX...

I need a professional web developer who can help integrate multiple ZOHO APIs with my existing WooCommerce website. The purpose of this project is to automate and streamline business processes by leveraging the capabilities of ZOHO. Ideal Skills and Experience: - Expertise in WooCommerce and ZOHO platform - Prior experience with ZOHO API integration - Proficient in PHP, JavaScript, and RESTful services - Knowledge of data synchronization and automation processes

I need a professional web developer who can help integrate multiple ZOHO APIs with my existing WooCommerce website. The purpose of this project is to automate and streamline business processes by leveraging the capabilities of ZOHO. Ideal Skills and Experience: - Expertise in WooCommerce and ZOHO platform - Prior experience with ZOHO API integration - Proficient in PHP, JavaScript, and RESTful services - Knowledge of data synchronization and automation processes

I need a professional web developer who can help integrate multiple ZOHO APIs with my existing WooCommerce website. The purpose of this project is to automate and streamline business processes by leveraging the capabilities of ZOHO. Ideal Skills and Experience: - Expertise in WooCommerce and ZOHO platform - Prior experience with ZOHO API integration - Proficient in PHP, JavaScript, and RESTful services - Knowledge of data synchronization and automation processes

Project Description: We are a company developing a SaaS-based platform offering ERP, Stock Management, Point of Sale (POS), and Invoicing solutions. We are seeking a highly skilled ...business requirements. Optimize performance for a seamless multi-tenant SaaS environment. Ensure high levels of security and scalability. Debug and fix any technical issues promptly. Requirements: Expertise in: Backend: PHP (Laravel framework) Frontend: JavaScript, HTML, CSS Database Management: MySQL or equivalent databases Cloud Platforms: AWS, Azure, or equivalent (preferred) Key Skills: Deep knowledge of multi-tenant architecture and SaaS development principles. Experience with ERP, POS, and Invoicing system designs. Ability to optimize software for multiple users and businesses in ...

I need a professional web developer who can help integrate multiple ZOHO APIs with my existing WooCommerce website. The purpose of this project is to automate and streamline business processes by leveraging the capabilities of ZOHO. Ideal Skills and Experience: - Expertise in WooCommerce and ZOHO platform - Prior experience with ZOHO API integration - Proficient in PHP, JavaScript, and RESTful services - Knowledge of data synchronization and automation processes

...- 3 Months+ Work time - 8 hours per day(Normal IST shift) I'm looking for skilled React Developers who are well-versed in JavaScript. You should have a solid grasp of JavaScript fundamentals and React development practices. Together, we will: - Develop and maintain scalable, high-performance React applications. - Ensure seamless integration of UI components with backend services. - Optimize application performance while maintaining robust code quality. - Solve complex challenges using advanced JavaScript concepts. - Collaborate with cross-functional teams to deliver high-quality solutions. Essential skills include: - Mastery in JavaScript and React. - Proficient in Prototypal Inheritance, Event Delegation, Closures, ES6+, DOM M...

I'm in the final stages of my app, aiming for a monetization through a subscription plan on both Apple and Google App Store. The core features are complete, but I need a developer's help to tackle a few challenges. The main tasks include: - Implementing payments via RevenueCat, focusing on subscription management. - Authenticating a domain. - Potentially improving the UI and handling small edge cases. I'm using a tech stack of Javascript, Expo, and Supabase. I offer a 20% cut of the app's revenue, negotiable based on your experience and commitment level. Ideally, you are located in Sydney, Australia. Ideal Skills and Experience: - Proficiency in Javascript, Expo, and Supabase. - Prior experience with RevenueCat implementation. - St...

I need a professional web developer who can help integrate multiple ZOHO APIs with my existing WooCommerce website. The purpose of this project is to automate and streamline business processes by leveraging the capabilities of ZOHO. Ideal Skills and Experience: - Expertise in WooCommerce and ZOHO platform - Prior experience with ZOHO API integration - Proficient in PHP, JavaScript, and RESTful services - Knowledge of data synchronization and automation processes

Description: Hello! We are IKON HR Private Ltd, an HR consultancy based in Karimnagar, Telangana, India, with over 12 years of experience in recruitment and talent sourcing. We are looking for a skilled web developer/designer to create a professional and user-friendly website for our company. Key Features Required: 1. Home Page: Introduction to our company and services. 2. About Us: Our history, mission, vision, and values. 3. Services: Detailed description of our HR consultancy and recruitment solutions. 4. Contact Page: Inquiry form, location map, and contact details. 5. Careers Section: • Job postings with descriptions. • Application form for candidates to submit their resumes. 6. Responsive Design: Mobile-friendly layout for seamless browsing. 7. Admi...

I'm in need of a travel website primarily focused on booking travel services. The site will cater to flights, hotels, and car rentals, making it a one-stop shop for all travel needs. A crucial part of this project is the implementation of user account functionality, as I want users to create accounts on the website. Key Features: - Booking interface for flights, hotels, and car rentals - User account creation and management system Ideal Skills: - Web development (HTML, CSS, JavaScript, PHP, etc.) - Experience with e-commerce and booking systems - Knowledge of database management for user accounts - SEO and digital marketing strategies to promote the site

...traces, more capacitors). - Same sensor configuration. - Ensure no conflict with ESP32’s boot/strapping pins when assigning 16 GPIOs. 6. Deliverables - Complete design files (schematics, PCB layout, Gerbers, BOM) for both variants. - Confirm pin assignments vs. ESP32 datasheet (no boot pin conflicts). - Integrate all necessary filters and protective components for reliable operation over long cables. - Optional help for the first manufacturing order (PCB specs, part sourcing, etc.). >>> Attachments & Reference 1. Ver_A Diagram (2-channel example) and Ver_B Diagram (16-channel example) – attached below, showing how I envision the wiring. 2. Reference Board Link: A similar design that also uses a 74HCT14 for level shifting. Although...

...dedicated individual to join Hullbot's service team in Seattle, WA. This role involves operating underwater robotic systems for boat hull cleaning in Seattle Harbour. We are seeking a freelancer to provide robotic hull cleaning services at Seattle Harbour. At the moment, the service takes place every two weeks on a Thursday night, starting around 6pm and lasting 6-8 hours. Currently, we have one customer to service, with expectations for growth in the coming months. The freelancer must be available onsite during these service windows and for the full duration of the service delivery, including additional time for preparation ahead of the service delivery, and additional time afterwards for packing up, cleaning, and generating a service report. In-perso...

I'm searching for a straightforward YouTube editor for an ongoing project. The job consists mainly of trimming my styling session videos to eliminate any pauses or empty spaces. - Editing 2-3 videos a week, each around 30 minutes long. - Minimal editing required despite the longer video length. To kick things off, we'll start with a single video as a trial to see if we're a good fit. If I'm pleased with the outcome, I'm keen to establish a long-term collaboration. My budget sits at approximately $10 per video, but I'm open to negotiation if your expertise aligns with my needs. Please share your rates and provide samples of your previous work if possible.

I need someone to create a simple MAC OS application that will allow you to select a MP4 video files, parse the audio to search for common curse words/profanity, and mute the audio a few ms before and a few ms after to make it clean. I would like the curse words to be replaced with a silent pause. Should be a simple interface where you simply: 1. Select mp4 file (local on drive). Allow multiple selections for batch processing. 2. click "Go" The file will process and save in the same location with an "" on the end to distinguish the new file.

1. Form Filling and Auto-Population - Use a single master form to collect all user data. - Backend stores and maps data fields to corresponding sections in the 20 documents. - Include manual edit options for specific fields via dynamic inputs. 2. Authentication - Admin-only user creation: - Provide a backend API that only admins can access to create users. 3. Signature Integration - Use a library like react-signature-canvas for collecting signatures. - Allow placing the signature manually on documents: (checkbox or button click) - Render the documents in the frontend (e.g., via ) for preview and drag/drop functionality. 4. PDF Generation - Use PDFKit or Puppeteer for generating PDFs server-side. Provide options for: - One-click export for all documents. - Selective export ...

I'm looking for a professional to create a detailed sketch or layout for a small room dedicated to an Assaic mining operation. This design should encompass both the electrical setup and airflow management systems. Key Requirements: - Comprehensive layout covering both electrical and airflow systems - Design tailored to a small room - Utilization of an industrial three-phase power supply Ideal Skills and Experience: - Previous experience with mining setup design - Strong understanding of electrical and airflow systems - Ability to design for a compact space

...into JavaScript. The primary objective is to seamlessly integrate FFmpeg into my website for video processing tasks, specifically format conversion. Key Responsibilities: - Use Emscripten to compile FFmpeg into JavaScript - Enable most common video conversion formats (x264 libavcodec/bsf/aac_adtstoasc) - Enable most common ffmpeg protocols (file,http,https,tcp,tls,crypto) Ideal Skills: - Extensive experience with compiling and Emscripten - Proficiency in FFmpeg Once the work is finished I would like to receive the file (I expect the file to be over 30Mb) and I would also like to have the list of steps to repeat the compilation independently. I'm not interested in node/nodejs/npm/wasm/WebAssembly, I'm not interested in anything that is als...

I need a simple mobile application developed for both Play Store and Apple Store. The main purpose of the app is to serve as a database and a form processing tool. Key Features: - Social Networking Elements: The app should include messaging capabilities and allow for profile creation. - SQL Database Integration: The app should utilize an SQL database. Ideal Skills: - Proficient in mobile app development for Android and iOS. - Previous experience incorporating social networking features into apps. - Strong understanding and experience with SQL databases. My goal is a seamless, user-friendly app that captures essential data and facilitates communication between users.

Project Descript...team to troubleshoot and resolve any technical issues. Provide documentation for the developed code and setup instructions. Skills Required: Strong experience in developing applications with the MERN stack (MongoDB, Express, React, Node.js). Proficient in JavaScript, HTML, CSS, and RESTful API design. Knowledge of cloud platforms (AWS, Google Cloud) for application deployment. Experience with version control systems (e.g., Git). Familiarity with security best practices (data encryption, secure authentication). Ability to write clean, maintainable code and deliver results on time. If you have the required skills and are interested in working on this project, please submit your proposal with your portfolio or relevant work samples. We look for...

...providers. As the Front-End Developer, you will transform 40 completed UI designs into a fully functional, optimized, and scalable front-end that integrates seamlessly with back-end services. Scope of Work: Platform Overview: Develop a responsive web application for desktop, tablet, and mobile. Ensure compatibility across major browsers (Chrome, Firefox, Safari, Edge). Implement designs provided in Figma or Adobe XD. Core Features to Develop: Homepage: Dynamic and interactive interface highlighting platform features. Job Listings and Filters: Advanced search and filtering for job seekers. Freelancer and Employer Dashboards: Tools for managing profiles, gigs, and job postings. Gig Marketplace: Listings and search features for freelance services. Learning Hub: Integration of on...

I need a freelancer to replicate this webpage for personal use. The project will require some minor adjustments to the content. Ideal Skills: - Web Development - HTML/CSS - JavaScript - Content Management Please note that there's no need for any interactive features, specific design/layout elements, or multimedia content to function like the original. The primary focus is on replicating the webpage with some specified content changes.

I have a fully functional application on the BTC blockchain, and I need a detailed description of its transaction processing logic. The focus will be primarily on the transaction creation aspect. Key areas to cover: - Input selection: How does the application determine which inputs to us...need a detailed description of its transaction processing logic. The focus will be primarily on the transaction creation aspect. Key areas to cover: - Input selection: How does the application determine which inputs to use for a transaction? - Fee calculation: What is the methodology for calculating transaction fees? Ideal candidates for this project should have: - Extensive experience in JavaScript. - In-depth knowledge of the BTC blockchain. - Ability to clearly and concisely e...

I'm in need of several virtual assistants for a straightforward one-hour task. The majority of the work to be done is data entry. I will send all the information and SOP on how to perform the job once the job is accepted. No previous experience required. I pay 5$ + fees for the work.

I'm looking for Blender 3D animator who can create simple, minimal-movement 20-30s animations for a 2 human characters. Character 3D models will be provided by me. Simple 3D scene. Animation doesn't need to be rendered. Thank you.

...login, registration, and subscription validation. Proxy Configuration: Secure and encrypted connections using V2ray protocols and Xray-core (V2ray core). Allow users to manually configure proxy settings if needed. Monetization Free Version: Integrate Google Ads (Android) and Apple Ads (iOS). VIP Version: Implement a subscription-based VIP model using Google Play Billing (Android) and Apple’s In-App Purchase system (iOS). User Interface Clean, intuitive design adhering to platform-specific guidelines: Android: Material Design. iOS: Human Interface Guidelines. Dashboard for: Connection status. Server selection. Subscription details. Performance Optimization Low battery and memory usage. Fast server connection and seamless switching. Development Process Pl...

slice and convert a design into HTML, connect it to three pages, and include JavaScript and CSS styling to match the design. I have the original Illustrator files. Pages include: Home (Personal Care), Skin Care, Lip Care, and a product page (clonable for other SKUs). Also, a search bar for simple keyword searches matching product labels is required. Let me know if you need more details!

I need an app script primarily aimed at processing mixed data (text and numerical). This script should be capable of gathering and processing data from various sources including databases, APIs and user input. Ideal Skills: - Proficient in scripting languages (e.g., Google Apps Script, JavaScript) - Experienced in data processing and manipulation - Familiar with working with databases and APIs Please include relevant experience in your bid.

I'm seeking a web developer experienced in HTML, CSS, and JavaScript to troubleshoot and fix functionality issues on my personal portfolio website. The site currently has some functionality problems that are hindering its performance and I need a professional to help resolve these issues. Ideal Skills: - Proficient in HTML, CSS, and JavaScript - Strong problem-solving skills - Attention to detail - Experience with personal portfolio websites - Able to work under deadline pressure

...as WolframAlpha, Wikipedia, and other APIs. Mode Switching: The device should operate in two modes: Basic Mode: Functions as a simple calculator with standard operations. Advanced Mode: Unlocked via a secret code, revealing a custom GUI to input queries and access hidden features. Custom Input System: The numeric keypad will allow dual functionality, with specific key combinations (e.g., pressing M+ and 7 together for "/") to input characters discreetly. Stealth Design: The device should resemble a typical calculator, with hidden ports (microSD, nanoSIM, and microUSB) accessible only after removing a back panel. Battery Optimization: A 1500mAh battery should support at least 8 hours of continuous operation, with charging via microUSB/regular AAA battery. I...

I need a professional web developer who can help integrate multiple ZOHO APIs with my existing WooCommerce website. The purpose of this project is to automate and streamline business processes by leveraging the capabilities of ZOHO. Ideal Skills and Experience: - Expertise in WooCommerce and ZOHO platform - Prior experience with ZOHO API integration - Proficient in PHP, JavaScript, and RESTful services - Knowledge of data synchronization and automation processes

I need a professional web developer who can help integrate multiple ZOHO APIs with my existing WooCommerce website. The purpose of this project is to automate and streamline business processes by leveraging the capabilities of ZOHO. Ideal Skills and Experience: - Expertise in WooCommerce and ZOHO platform - Prior experience with ZOHO API integration - Proficient in PHP, JavaScript, and RESTful services - Knowledge of data synchronization and automation processes

...are partly built but are not running as intended, and need both some editing, new funnels and automations as well as ongoing administrative work and operation for the site, memberships, communities and dealing with the lead automations and processing as such I'm in need of a seasoned Go High Level wizard and operator to assist with several key tasks, including campaign setup and management, funnel building and optimization, and CRM as well as membership/community management. Goals: - The primary objective is to increase attracting and working with agents all over BC and Canada to make coaching sales, training class sales, sell memberships in resources and business development communities improve customer retention, and generate leads. - I need help making ...

I need help fixing and finishing a website I have already started. The issues primarily lie with design elements and functionality. Specific Issues: - Design Elements: Layout and structure problems. The layers, header and footer appear to be misaligned and inconsistent. - Functionality Issues: There are several bugs and problems that are interfering with the smooth operation of the site. Ideal Freelancer: - A keen eye for design and detail to help rectify the layout issues. - Strong web development skills to address functionality issues. - Experience with website design and troubleshooting is a must.

We need to implement some adjustments to an already operating api integration. The integration with the API is on a website built using WordPress. Some of the required implementations are: - **Modify Code**: The "operation" field cannot be fixed as a "string." It needs to be a unique UUID for each operation. If a CPF is provided, the "responsible" field should be sent as null. - **Create a Cron Job**: To update the validation token periodically. - **Allow Accented Characters in Client Names**: Currently, there is a restriction on numbers and special characters. However, there should be no restrictions for accented characters. The permitted accents are: ã, á, â, ê, é, í, ô, ó, &...

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I am looking for a developer who can create a 4-inner page responsive HTML website for me. The main goal of the website is to collect inquiries or leads. Key Requirements: - Design and develop a Home page, About Us page, and Contact Us page - Implem...main goal of the website is to collect inquiries or leads. Key Requirements: - Design and develop a Home page, About Us page, and Contact Us page - Implementing a modern and minimalistic design - Ensuring the design is responsive across all devices - Incorporate lead collection features effectively Ideal Skills: - Proficiency in HTML, CSS, JavaScript - Experience in creating responsive websites - Strong understanding of modern minimalistic design principles - Knowledge in implementing lead collection tools on we...

I'm looking for an experienced web developer to design an e-commerce website for selling physical products. Key requirements: - The website should be user-friendly and visually appealing. - It must support secure payment gateways. - The design should ...website for selling physical products. Key requirements: - The website should be user-friendly and visually appealing. - It must support secure payment gateways. - The design should be responsive and compatible with all devices. Ideal skills and experience: - Prior experience in designing e-commerce websites. - Proficiency in web development languages such as HTML, CSS, JavaScript, etc. - Experience with SEO and digital marketing strategies will be a plus. Please provide examples of similar projects you hav...

...Integrate custom pricing logic for personalized product options. Troubleshoot and resolve any plugin conflicts or compatibility issues. Ensure all work is responsive, and adheres to coding best practices. Provide post-launch support and ongoing maintenance as needed. Requirements: Proven experience as a WordPress Developer, with a portfolio showcasing WooCommerce customizations. Proficient in PHP, JavaScript, HTML, and CSS. Experience working with WordPress hooks, filters, and custom post types. Familiarity with the Fancy Product Designer plugin (or similar customization plugins). Strong understanding of WooCommerce architecture and its integration points. Ability to write clean, maintainable code and adhere to coding standards. Excellent problem-solving skills and attent...

We are seeking a skilled and experienced Freelance Web Developer to build a fully functional e-commerce website using HTML, CSS, and JavaScript. The website must include a robust backend, customer login capabilities, payment integration, and delivery integration. The project requires expertise in creating SEO-friendly web pages and deploying the website to HostGator. Responsibilities: - Develop responsive and SEO-optimized e-commerce web pages using HTML, CSS, and JavaScript. - Design and implement a secure backend to support customer login and manage user data. - Integrate payment gateways like Stripe and PayU for seamless transactions. - Set up delivery partner integration with Shiprocket for efficient order fulfillment. - Ensure cross-browser compatibility and smoo...

I am developing a Resume Builder app and require a simple HTML developer to convert basic JPG sites into HTML/CSS. The task involves creating 10-20 simple, non-responsive, single-page HTML resumes from provided JPGs. Key Requirements: - Convert JPGs into simple, fixed-size HTML - Basic CSS application only (no custom fonts or advanced animations required) - Hourly pay as the number of resumes is uncertain Skills and Experience: - Proficient in HTML/CSS - Able to follow simple design instructions - Prior experience converting images into HTML/CSS preferred Please provide your hourly rate for this job.

I’m looking for a skilled web developer to help me build a business website based on a design I already have. Key Features: - Implement a commenting system - Integrate social media sharing capabilities The ideal freelancer for this project will have a solid understanding of both front-end and back-end technologies, with extensive experience in HTML, CSS, JavaScript, React, Node.js, and PHP. They will be adept at translating designs into responsive, user-friendly websites, and have a knack for optimizing performance and ensuring seamless user experiences across various devices. Let's collaborate to bring this project to life!

We are seeking a highly skilled and motivated Full Stack Developer with expertise in Laravel and React to join our dynamic team. As a Full Stack Developer, you will play a key role in developing, maintaining, and optimizing our web applications, ensuring an exceptional user experience and robust backend functionality. Responsibilities: Design, develop, and maintain web applications using Laravel for the backend and React for the frontend. Build RESTful APIs and ensure seamless integration between backend and frontend systems. Collaborate with designers, product managers, and other developers to implement user-friendly and visually appealing interfaces. Optimize application performance and scalability. Write clean, maintainable, and reusable code following best practices. Per...

Custom QR Code Generator and Feedback System for ERPNext Job Description: I am seeking an experienced developer to create a custom QR code generatio...code generation, feedback reporting, filtering, and exporting. • A secure database to store feedback data. • Installation and testing of the system on my ERPNext instance. Skills Required: • Strong experience with ERPNext customization and development. • Proficiency in Python, JavaScript, and HTML/CSS. • Familiarity with QR code generation libraries. • Database management and security best practices. Deadline and Budget: • Please mention your estimated timeline and budget in your proposal. If you have experience in similar projects or with ERPNext, please include examp...

I'm looking for an experienced developer with skills in Android, iPhone, Javascript, MySQL, and Laravel. This is an hourly project focused on an e-commerce application. Key Requirements: - Deep understanding of e-commerce app development. - Experience with debugging and developing accounting systems. - Proficient in Laravel for backend development. Ideal Skills: - Android & iOS app development. - Javascript & MySQL for smooth functionality. - Excellent problem-solving skills for debugging. - Prior experience with e-commerce and accounting systems is a plus. Please note, this is not just creating a new app, but also improving an existing accounting system within the app. I appreciate your understanding and look forward to your bid.

...optimized for all device types. Deliverables: Fully functional Flutter app for iOS and Android with all specified features. Scalable and secure backend system. A polished, responsive landing page with seamless app integration. Detailed project documentation, including API references and deployment guides. Technical Requirements: Frontend: Flutter for mobile development; HTML/CSS/JavaScript framework for the landing page (e.g., React, Angular, or Vue.js). Backend: Scalable architecture using Node.js, Django, Ruby on Rails, or a comparable framework. Database: Firebase, PostgreSQL, or MongoDB for secure content and user data management. Payment Gateways: Integration of Stripe, PayPal, or other relevant solutions. Hosting and Deployment: Guidance on deploying the ...

Output of rectagular signal of 0-40Volts, up to 15Amps. The output signal should be variable in amplitude and also be either unipolar (0-40 Volt, adjustable e.g. from 0 up to 0-40Volt) or bipolar (+/- 20 volt adjustable from 0 to +/- 20 volt), by means of a switch. Will drive a coil of 17mH or 34mH (thick wire on a big, 60cm bobbin) Signal should be from 0 to 50Hz Power input from line 230Vac and idealy 100-240Vac Need 2 controls: 1. for the intesity (output voltage): 0-40 volts 2. for the frequency: 0 (off) - 50Hz The control at this stage can be potentiometers, but in the near future will be controled by an MCU, so control signal should be of low voltage (e.g. 0-5 volt) There should also be a protection of the output if there is a shortcut. Based on SG3525 is a good id...