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Circuit Design Jobs

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Fixed-Price - Est. Budget: $ 250 Posted
Project objetive is to package an LCD display module, 2 LED's, on/off switch, 2xAA batteries, battery terminals, and wiring into the constraints of an existing plastic prototype housing with removeable battery cover and make them fully operational for field testing. PCB design and IC programing for LCD module already completed. Also, looking for guidance on how to improve and industrialize for production. Freelancer must be located in Michigan in order to complete this project.
Fixed-Price - Est. Budget: $ 100 Posted
Design three types of universal LED bulb driver: 1.) Using minimal component to keep cost down (See "01.jpg" and "02.jpg" attachment ) 2.) Using integrated circuits for higher brighter/Life of LEDs(But cost must be low) 3.) Using some high end technology to keep Quality and life longer(You can also add extra features like light sensing technology and make it energy efficient) Input: 90-260v AC Output: Volts: Universal Amps: Configurable just by replacing transistors or any single component(No need to change design) Note: I do not want any current leakage/wastage (or as minimal as possible)
Fixed-Price - Est. Budget: $ 244 Posted
my project consists of 2 parts. 1.)the calculation and sizes of the laminations(noss v470) as well as the windings for 3 phase 220v 4 core 20kva alternator. 2.)i need a circuit designed for the alternator that automatically add an adjustable load the main load. the circuit must rectify the alternator winding and combine the to form a 240v single phase output. the out must the be inverted to 50 Hz .whether the phases must be combined before or after the frequency conversation i don't know.after this the 240v 50Hz goes to the load. from the load it must the come back to an artificial load. the size of the artificial load will change according to the output. the artificial load will always be the generated power being produced by the alternator at that time minus the main load at that time plus half of the resultant . for example if the generator is producing 6kw and the load is 2.2 the the resultant is 3.8kw. the artificial load must now be 3.8kw multiplied by 1.5. this only applies...
Fixed-Price - Est. Budget: $ 1,000 Posted
We are looking for a resource to design a miniature PCB board 10mm x 10mm in size to produce a MEMS pressure sensor. This will be configurable for both gage and differential and need to be compensated and able to be calibrated to the following specifications: Switch Type: Normally Open • Type of Actuation: Vacuum (Contact closes upon application of vacuum pressure, Open upon release of vacuum) Pneumatic • Set point trip pressure: 0.25 +/-0.09 inches of water vacuum • Set point shall not be affected by application of 10.0 PSIG positive pressure Electrical • Contact Resistance: 500 milliohms maximum • Recommended switching load: 10-20 milli-amperes Physical • Operating Temperature: -15 to +55 degrees C • Terminals: Tinned (PC board mounting) • Media: Gaseous oxygen to 8.0 PSI positive pressure
Fixed-Price - Est. Budget: $ 300 Posted
Design a power bank of capacity 10,000mah(Li-Polymer) which provides two ports for charging mobile. It have following features 1. Power bank should be charged in less than 4 hours. 2. Power bank and mobile devices could be charged simultaneously. 3. Overvoltage protection 4. Overcurrent protection 5. short circuit protection 6. Cell balancing 7. Two Ouput USB ports for charging mobile one of 5V 1A and other of 5V 2A Need serious bidder. This may be start but it can turn into long term relation. Bidders from Pakistan are encouraged to apply.
Fixed-Price - Est. Budget: $ 100 Posted
Design a schematics diagram for Altera MAX V CPLD 5M40ZE64 CPLD, which will be used to produce a evaluation/development board for this device. -- Route as many IO pins as possible and provide descriptive names and port numbering for them. -- Route the ISP pins and group them to a pin header compatible with Altera programmers. -- Route and name the power input pins. -- Add all the required active and passive components to ensure stable operation of the device. -- Provide a file with a description for each pin, mentioning its number in EQFP package, all its configurable functions, input/output voltage and current limitations, etc. -- Include a short textual overview of the board into the text file. Assume that power is provided externally to the board. The expected result should contain: -- circuit drawing in PDF, SVG or another graphic format; -- circuit definition file for one of the popular schematic editors; -- a text file with pin description and board overview This...
Fixed-Price - Est. Budget: $ 5 Posted
I need a schematic designer to design my meeting Room Screen Boards Board Components 1. Aurdino 2. PoE 1. using Silvertel AG9120 PoE Module 2. RJ45 3. Pulse Transformer 4. USB to LAN 3. PN532 for RFID/NFC 4. Proximity Sensor - range 4 -5 meter S/W Components 1. Board needs to communicate with Android i.e USB to LAN compatible with Android 4.1.1 2. Aurdino burnt on ATMEGA 328 Board Size 1. Length - 17 cm 2. Width - 5.3 cm Connections 1. Aurdino to Tablet via USB/OTG cable 2. PoE - i.) Connection to Power port of Tablet . ii) Data Port to connect directly through OTG/USB 3. Proximity Sensor controlablle through Aurdino