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Circuit Design with Heating Element
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Engineering & Manufacturing > Electrical

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The client has made the following changes to the job.

Description
Date

Job awarded.

Apr 13, 2012
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Job Description

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  • Posted: Fri, Apr 06, 2012
  • Time Left: Closed
  • Location: Anywhere
  • Client prefers freelancers from:
    Anywhere

    You are still able to submit a proposal for this job.

    The client prefers freelancers from
    a different location.

    You're still able to submit a proposal for this job, regardless of your location.
  • Start: Immediately
  • Budget: Less than $500
  • Fixed Price Job
  • Elance Escrow Protection
  • U.S. freelancers must have W9
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I need a schematic designed, with a Bill of Materials for a simple circuit that can heat a heating element to 385 degrees Farenheit.

Requirements:
-Circuit must run on 8.4V DC Li-ion battery
-On/Off Switch with LED indicator
-Use of Nichrom wire that will reach a temperature of about 385 degress F
-A thermal cutoff that will activate at around 450 degrees F

Deliverables:
-Schematic
-Simulation results
-Description of functionality
-Bill of Materials

If you have any other questions or suggestions please dont hesitate to ask.
------------------------------------------
Added 6 APR 2012, 14:25 PM EDT
Addendum: The exact voltage of the battery that the circuit runs off is not a requirement.

What is a requirement is that the circuit must run off of any combination of off the shelf rechargable AA batteries.

I will be making a battery pack from AA batteries to run this circuit so you need to just tell me how they should be configured to acheive the voltage you are des...

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