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All JobsAnalog Electronics

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Results for 'Analog Electronics'
Hourly Rate: $10 - $15 / hr   |  Duration: 7-9 months  |  Posted: 1h, 39m ago  |  Ends: 14d, 22h  |   0 Proposals
Read and consult articles about traffic and transportation. Projects consulting in field off vehicle maintenance. Traffic safety expertise (consulting and advice).
Category: Other - Engineering &...       

v****lac
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| v****lac
|    Serbia
Fixed Price: Less than $500   |  Posted: May 22, 2015  |  Ends: 9d, 7h  |   3 Proposals
Simple modification of an FRS or similar radio module to send an alert tone in response to a switch opening (reverse sense from normal). Second phase after proof-of-concept may involve some mechanical packaging in existing molded housing.
Category: Electrical       
Skills: Circuit Design, Analog Electronics       

A****297
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| A****297
|    United States
Hourly Rate: Less than $10 / hr   |  Duration: 1-3 months  |  Posted: May 19, 2015  |  Ends: 6d, 14h  |   2 Proposals
I would like a proposal on how to provide a 100% detection reliable occupancy sensor module. Designer must have DSP and digital and analog, signal processing experience. Specific details will be provided upon reviewing the proposed method of 100% reliable detection.
Category: Other - Engineering &...       
Preferred Location: Eastern Europe, India/Southern Asia, Eastern Asia

v****whk
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| v****whk
|    Hong Kong SAR, PRC
Hourly Rate: Not Sure   |  Duration: Not Sure  |  Posted: May 18, 2015  |  Ends: 5d, 14h  |   7 Proposals
Hello there, My name is Drew & I design and work with analog video circuitry. I have a basic understanding of electronic circuit design, very basic, I am self taught. On my most recent design I've run into a problem that I cannot really explain and I am looking to get a professional take on my trouble. Long story short, I have a small video fx processor. On top of being a cool analog video device with a bunch of control knobs it features an audio input function. I have an audio input going to a TIP31 bipolar junction transistor which is amplifying my audio signal and driving my LED light to the db of the incoming audio signal. The goal is for this LED to be the LED portion of a vactrol. Upon driving the LED everything behaves as it should until suddenly at an unpredictable moment, while noodling around with the fx knobs on my unit (perhaps the LED lighting in conjunction with a particular knob position), the whole board goes bad. By bad I mean the LED keeps on blinking... but ...
Category: Electrical       

d****-m1
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| d****-m1
|    United States
Fixed Price: Less than $500   |  Posted: May 15, 2015  |  Ends: 2d, 5h  |   7 Proposals
Hi guys i will provide the transfer function of sc circuits, i am looking some one can realize the circuits theoritically(build a circuit) and implement it cadence or hspice or spice
Category: Electrical       

s****k17
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| s****k17
|    Canada
Hourly Rate: $20 - $30 / hr   |  Duration: Not Sure  |  Posted: May 15, 2015  |  Ends: 1d, 19h  |   13 Proposals
This is a small project to design an ultrasonic range finder using a single transducer. I would like to find a designer who's willing to not only play the role of a designer, but also spend some of the billed hours explaining the design to me in Skype video sessions. The main priority is to design the schematic, implement the circuit on a breadboard and test it. The second priority is to design a PCB and going through manufacturing and assembly. DESIGN REQUIREMENTS - The circuit MUST use a single transducer to both transmit and receive ultrasonic pulse train. - The transducer MUST still be able to function function after being in contact with water, but operating under water is NOT a requirement. - It MUST be possible to fit the transducer in an enclosure such a way that water cannot enter the enclosure. - The range finder MUST have a range of 10cm - 2m. - After each measurement cycle the circuit MUST be put in sleep mode in which power consumption is negligible. I hope we can wor...
Category: Electrical       
Skills: Digital Electronics, Analog Electronics       

h****anr
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| h****anr
|    Japan
Fixed Price: $500 - $1,000   |  Posted: May 07, 2015  |  Ends: 39d, 0h  |   9 Proposals
I have about 15 - 20 lamp ballast power supply boards in need of repair. They all have the same problem, so once you figure it out, the repair should be simple. They are projector lamp ballasts. Replacement units are costing us $80 - $100 each, so if you can repair these for $50 or less each, then this job is cost-justifiable. Problem: This is a lamp ballast, so a surge current is required to fire the lamp. That surge current is not happening when the ballast is cold. However, if I heat the ballast to over 120F, the ballast will fire, and works great. I believe I have eliminated the daughter board as the source of the problem. That leaves only 8 active components on the mainboard, and none cost more than a couple of dollars. One problem is I don't have a schematic diagram for the ballast, and the vendor will not give or sell me one, because I am not an 'authorized' repair center. I will send you one ballast to repair. If you repair it and we agree on a price, I will sig...
Category: Other - Engineering &...       
Skills: Electronics, Analog Electronics       
Preferred Location: North America

L****ech
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| L****ech
|    United States
Fixed Price: Less than $500   |  Posted: Apr 18, 2015  |  Ends: 50d, 8h  |   10 Proposals
Tele operador con grandes cualidades para tratar al cliente. No se decepcionara. Respetuoso 100%. Disponible durante toda la semana 24/7
Category: Virtual Assistant       

n****obc
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| n****obc
|    Spain
Fixed Price: Less than $500   |  Posted: Apr 05, 2015  |  Ends: 37d, 10h  |   2 Proposals
dozens complete projects on software and hardware using c and indeep datastructure and algorithmic problems,highly grades at programming in my faculty, write code highly abstracted for security , i form a lot of pages using html and CSS (i had 2 year experience in each) , i made a little project using C# on keyboard screen ,scientific calculator and login page via database tools.
Category: Software Application       
Skills: C, Java, C++, Analog Electronics, C Shell       

g****xxx
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| g****xxx
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