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All JobsCircuit Design

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Hourly Rate: Not Sure   |  Duration: Not Sure  |  Posted: 1h, 39m ago  |  Ends: 29d, 22h  |   0 Proposals
Hi i am looking for the multiple loop feedback structures that should be applied on continuous time current mode filter and design equations for that project. If any one are good in this topic please respond or you can contact me at   [obscured]  . Thanks..
Category: Electrical       

r****thy
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| r****thy
|    Canada
Fixed Price: $20 - $25   |  Posted: 1h, 48m ago  |  Ends: 14d, 22h  |   1 Proposal
The CAT system should test the response of the following types of filtering circuits: Low-Pass and High-Pass. design low-pass and high-pass filters. along with a copy of the frequency response shown in p-spice. The Analysis routine should determine the following parameters: Maximum Gain and Frequency, Minimum Gain and Frequency, f1 or f2 values, bandwidth, and Filter Type (LP or HP). The data must have only one maximum point and if there is an f1 point or f2 point, there can be only one of each, not multiple f1 or multiple f2 points. The Analyze routine needs to include linear interpolation for finding the f1 and f2 points from the adjacent data values. need this in hour or two . this is a small project can be done within an hour google already has low and high pass .but not with two filters so lets see
Category: Electrical       

d****ace
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| d****ace
|    United States
Hourly Rate: Not Sure   |  Duration: Not Sure  |  Posted: 1h, 52m ago  |  Ends: 14d, 22h  |   9 Proposals
We have a PCB layout job that will take an existing .pdf schematic, adjust circuit design based on red line changes (mostly deleting a few sections) and then layout a new board based on a .dxf file of the board outline that includes all critical placements. the board is approximately 4" square and will be populated with about 80 - 100 components. We will order and assemble prototype boards here in house. This job may actually be two very similar boards with the identical schematic design. We prefer the Use of Eagle as it allows the most flexibility for us.
Category: Electrical       

i****sys
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| i****sys
|    United States
Hourly Rate: Not Sure   |  Duration: Not Sure  |  Posted: 1h, 56m ago  |  Ends: 14d, 22h  |   3 Proposals
Provide estimate for electrical engineering services to design pulse width modulator and the fabrication of prototype circuit. Please see attached. Pulse width modulator shall be similar to link below.   [obscured]  /shop/cyber-circuits/pulse-generators/PWM-OCm Use same specs but higher frequency per attached pdf Circuit design to have the lowest power consumption as possible.
Category: Electrical       

P****IER
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| P****IER
|    United States
Hourly Rate: Not Sure   |  Duration: Not Sure  |  Posted: 2h, 21m ago  |  Ends: 14d, 21h  |   0 Proposals
hi i want to know if you know about the multiple loop feedback method(FLF and IFLF). I need the design equations of this method on continuous time current mode filter. Can you help me with this work please bid.
Category: Electrical       

r****thy
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| r****thy
|    Canada
Fixed Price: $50 - $200   |  Posted: 2h, 59m ago  |  Ends: 6d, 21h  |   0 Proposals
Requirements: 1. Input: ac supply 240V 50Hz (a) should be able to accomodate spikes 10% of voltage 2. Output: 2.2(min)-3.3(max) VDD (a) Max supply rise rates 0.1V/?s (b) Power characteristics {3.3 V,7mA} {2.2V*10mA} (c) designed for automatic cutoff/reset on max voltage and max amps. 3. Other requirements (a) compact circuit required (space is at premium, so no bulky components like transformers) (b) low heat generation and high efficiency output power (c) schematic in Kicad project or other editable with other opensource tools is preferred
Category: Product Design       

m****apu
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| m****apu
|    India
Hourly Rate: Not Sure   |  Duration: Not Sure  |  Posted: 4h, 46m ago  |  Ends: 29d, 19h  |   3 Proposals
hi i want to know if you know about the multiple loop feedback method(FLF and IFLF). I need the design equations of this method on continuous time current mode filter. Can you help me with this work please bid.
Category: Electrical       

r****thy
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| r****thy
|    Canada
Fixed Price: Less than $500   |  Posted: 7h, 16m ago  |  Ends: 14d, 16h  |   9 Proposals
Basic circuit to convert the voltage output from an Arduino controlled MCP4725 DAC outputting a voltage from 0-5V DC to a signal voltage of -5V DC to +5V DC. Therefore 0V = -5V, 2.5V = 0V, +5V=+5V This is for motor control so a clean signal is required and possibly a 0V start up output but this is not essential.
Category: Electrical       

g****ton
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| g****ton
|    United Kingdom
Hourly Rate: $40 - $50 / hr   |  Duration: 1-2 weeks  |  Posted: 21h, 2m ago  |  Closed  |   0 Proposals
Independent Contractor providing Printed Circuit Board Design and Layout Services to Electrical/Electronic Engineering Companies
Category: Other - Design       

a****gns
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| a****gns
|    United States
Fixed Price: Less than $500   |  Posted: Mar 30, 2015  |  Ends: 13d, 22h  |   3 Proposals
As you know, big box stores demand very low cost electronic gadgets. Often consumers will enjoy using an electronic gadget for a few minutes, and then will discard the gadget. Dichroic lcds require voltages > 9V. 9V driver chips are expensive, and chips suitable to drive 3V TN lcds will not handle voltages greater than 5V or 6V. I want you to write up a basic BOM. After I approve BOM, you can also make the schematic and gerbers. I need you to be creative, to "put your thinking cap on", and suggest a VERY LOW COST pcba to drive a single dichroic lcd pixel off and on, like a simple flasher circuit. The precision of the timing of the flashing off and on is not important. Square wave is best but not required. Direct drive is OK, but a multiplexing rate of 16 flashes per second or 32 flashes per second reduces battery consumption substantially. If a pcba with direct drive is lower cost than a pcba with multiplexing, I would prefer a direct drive pcba. For example, in...
Category: Electrical       
Skills: Electronic Design, Gerber       

a****gel
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| a****gel
|    United States
Fixed Price: $1,000 - $5,000   |  Posted: Mar 30, 2015  |  Closed  |   0 Proposals
Keyboard with 12 Bottom (0 to 9) Back space and enter, that would be attached to a developed door screen used for security reason. keyboard must work on 2 level when the cursor in the field of Alarm Zone, it must act normally as numbered keyboard, if the cursor isn't in the appropriate field, it must execute a different function set within the program as shortcut for preprogrammed scenarios) i have the physical design as per size, i need to develop the hardware design
Category: Electrical       
Skills: Integrated Circuits, Electronics       

2****lic
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| 2****lic
|    Canada
Fixed Price: Not Sure   |  Posted: Mar 30, 2015  |  Ends: 13d, 18h  |   6 Proposals
This is a PCB design job. And I want you to use PADS for both schematic and layout design. The PCB is a PCIe card. I'm going to use the XR17V352 (PCIe-UART bridge) for PCIe interface. And the UART will be connected to microZED module. Simply say, This is for giving PCIe interface to microZED through UART interface. I want 2 UART connection to be connected between PCIe and microZED. I can't give you more information of XR17V352 because I couldn't find a reference schematic of it. And I want you to have some knowledge about the Zynq which is the SoC on the microZED because you need to understand it how to make the UART connection. It is basically nothing but a PCIe to UART bridge circuit attaching microZED carrier to the UART interface. So I want it cost effective, i.e. 2-layer design.
Category: Electrical       

W****m88
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| W****m88
|    Korea, Republic of
Hourly Rate: Not Sure   |  Duration: Not Sure  |  Posted: Mar 30, 2015  |  Ends: 13d, 18h  |   9 Proposals
I am looking for an electrical engineer to design an electrical control box for an oven. I will need detailed specifications that I can use for taking in offers for parts and/or a fully assembled control box. Delivery is a list of components and schematics for wiring. We will only be making a few of this machine at this time, so I think it would be better to use PLC:s rather than PCB:s. The box will control one motor and two heating element arrays. The motor will need adjustable speed and soft start. The motor will also work and pause in intervals. The element arrays will be controlled individually and by a common thermostat. The elements will also be controlled with a timer. The machine will need an emergency kill-switch that turns everything(motor&elements) off Attached is a schematic representation of our system and our needs
Category: Electrical       

a****zzz
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| a****zzz
|    Sweden
Hourly Rate: Not Sure   |  Duration: 3-4 weeks  |  Posted: Mar 29, 2015  |  Ends: 13d, 5h  |   9 Proposals
This job focuses on achieving the best design for the product I have in mind. In this case the final design of the product is strongly related to the orientation and design of the chosen electrical components. I need consultation and direction on the electrical design and after that I need to narrow down the best design. I have some concepts in mind, but I need professional input. Only after the final design is reached, I will need a 3D rendering of the product. Details will be disclosed upon signing an NDA.
Category: Product Design       

J****101
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| J****101
|    United States
Fixed Price: Less than $500   |  Posted: Mar 29, 2015  |  Ends: 12d, 23h  |   8 Proposals
We're are looking at building a dodecahedron speaker with integrated amplifier and noise source. The 12 identical speakers have an impedance of 8ohms each and maximum input power of 100W RMS but 20-30W per driver should suffice to achieve an overal SPL > 100dB @1m as the driver sensitivity is stated as 85dB/1W. An integrated pink or white noise source is a bonus. Space is of the essence as we want to integrate the amplifier within the dodecahedron if possible. The brief is to design and build the first and hopefully final version of this amplifier (we will build the dodec and source the required speakers).
Category: Electrical       

f****959
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| f****959
|    United Kingdom
Fixed Price: $1,000 - $5,000   |  Posted: Mar 27, 2015  |  Ends: 11d, 1h  |   15 Proposals
I want help designing a small circuit home charger with 1 or 2.1 amp to provide energy for cellphones , the entire charger needs to be same or smaller than a regular usb stick.
Category: Electrical       
Skills: Electrical Engineering       

n****cun
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| n****cun
|    United States
Fixed Price: Not Sure   |  Posted: Mar 27, 2015  |  Ends: 11d, 1h  |   14 Proposals
Hi, this project is about developing 3 micro circuits (1 of them is remote controller). I need developer to make the following microcircuit: 1) Micro circuit with LED lights strip (6 LEDs) remotely turned on and freezing for 8 seconds, and then self shutting down. size: 80x30x8mm max Working Voltage - 12V max 2) Micro circuit with LED lights strip (6 LEDs) remotely turned on and freezing for 8 seconds, and then self shutting down, size: 80x30x8mm max Working Voltage - 12V max 3) Micro remote control (not IR), it is desirable to radio waves (or Bluetooth). Which will operate at a distance of 10 meters (max). The purpose of the remote control is to switch on LED lights described above. So remote control will have only 2 buttons (each button turns on each device with LED strip). size: 45x25x10mm. Working voltage - 3V max. Briefly, I need 2 separate devices, which controled by remote control (3rd device). Budget: TBD
Category: Electrical       
Preferred Location: North America

S****er8
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| S****er8
|    United States
Hourly Rate: $15 - $20 / hr   |  Duration: 1-2 weeks  |  Posted: Mar 27, 2015  |  Ends: 10d, 22h  |   3 Proposals
I need someone that can write articles in the electronic industry. Specifically on Printed Circuit Boards. Topics : - PCB surface finishing techniques (OSP, HAL, Gold Plating,...). Pros and cons - How a PCB is made (describe how a 2-layer PCB is made) - Materials available for PCB manuacturing. Pros and cons - Defining temperature of soldering on a PCB (what temperature ranges are optimal depending on the material chosen. Limit it to the most common materials for eg FR-4) - PCB pooling for prototype orders. Using a pool of different projects/clients we can reduce manufacturing costs for low quantity orders. Other subjects will come. I need a 500-800 words article for the topics. Good english and good technical knowledge. Experience in electronics required.
Category: Article Writing       

c****ang
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| c****ang
|    China
Hourly Rate: Less than $10 / hr   |  Duration: 1-2 weeks  |  Posted: Mar 27, 2015  |  Closed  |   0 Proposals
I need someone that can write articles in the electronic industry. Specifically on Printed Circuit Boards. Topics : - PCB surface finishing techniques (OSP, HAL, Gold Plating,...). Pros and cons - How a PCB is made (describe how a 2-layer PCB is made) - Materials available for PCB manuacturing. Pros and cons - Defining temperature of soldering on a PCB (what temperature ranges are optimal depending on the material chosen. Limit it to the most common materials for eg FR-4) - PCB pooling for prototype orders. Using a pool of different projects/clients we can reduce manufacturing costs for low quantity orders. Other subjects will come. I need a 500-800 words article for the topics. Good english and good technical knowledge. Experience in electronics required.
Category: Article Writing       

c****ang
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| c****ang
|    China
Hourly Rate: Not Sure   |  Duration: Not Sure  |  Posted: Mar 27, 2015  |  Ends: 10d, 20h  |   2 Proposals
I am looking for a Service Engineer to do troubleshooting, small modifications, service on machine we have installed and commisionned with clients of us in the USA, Michigan - Chicago area. Required knowledge, Siemens TIA portal, drive technologie.
Category: Electrical       

T****edt
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| T****edt
Fixed Price: $1,000 - $5,000   |  Posted: Mar 27, 2015  |  Ends: 10d, 13h  |   8 Proposals
I need to design two products (PCB's) to do the following: something like this: 1- Wifi box with RF 300m to many home RF kits 433mghz   [obscured]  /english/product/740.html 2- IR reader and sender gets command through RF   [obscured]  /english/product/755.html
Category: Electrical       

s****lan
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| s****lan
|    Hong Kong SAR, PRC
Fixed Price: Less than $500   |  Posted: Mar 26, 2015  |  Ends: 9d, 20h  |   5 Proposals
My name is Julie Walsh, and I'm the founder of fitBallet. It's a high-intensity workout that fuses ballet and traditional circuit training. We just started group fitness classes in NYC in January. I'm writing because I'm entering a competition for fitness start-ups, and I need some video footage to submit with the application. I'm envisioning you coming to a class (they're an hour long) and filming the class and perhaps a few talking-head shots with clients, talking about how much they liked it. Thanks so much, Julie Purpose of video: A 2-3 minute video showing what our brand is like. Target audience of video: Women in their 20's-30's Length of video: 2-3 minutes
Category: Videos       
Skills: Video Production       
Preferred Location: United States

f****let
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| f****let
|    United States
Hourly Rate: $10 - $15 / hr   |  Duration: 1-2 weeks  |  Posted: Mar 26, 2015  |  Ends: 9d, 18h  |   3 Proposals
I need help for design a Tunable Band Stop Filter (By using ADS software) I need explanation of the steps of that design and how to complete it by ADS program. If someone have the knowledge about ADS software. Happy bidding. Thanks Robin.
Category: Electrical       

h****bin
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| h****bin
|    Italy
Fixed Price: $500 - $1,000   |  Posted: Mar 26, 2015  |  Ends: 9d, 13h  |   21 Proposals
We are developing custom android based smartwatch. we are looking for someone to help us designing pcb board. size is 32mm 32mm or 50mm diameter. if you are interested, pls contact us.
Category: Electrical       

K****rge
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| K****rge
|    Turkey
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