Author Topic: Looking for design engineer: 300-400vDC linear regulated power supply, 200ma.  (Read 1568 times)

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Offline valvedoctor

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  • Country: us
Hello,

I am looking for an experienced engineer to design a simple linear power supply circuit.

Details are:

This power supply is for the B+ of a tube circuit. It should be adjustable between 300 - 400 vDC, up to a maximum of 200ma.

I would need the transformer secondary winding specs, into a bridge rectifier, followed by a MOSFET or darlington pair into a regulation device such as LM3080. Must be diode protected for accidental shorts. Should be low source impedance and noise must be kept to a minimum. Heatsink requirements is also needed. PCB layout will be done by me.

Please PM me to discuss the project and to send me a quote.

Please have references/resume.

Refer to application notes below for similar circuit ideas.

Regards,
Valvedoctor

http://cds.linear.com/docs/en/datasheet/3080fc.pdf
http://cds.linear.com/docs/en/application-note/an2f.pdf
http://www.ti.com/lit/an/snoa648/snoa648.pdf
 

Online T3sl4co1l

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  • Expert, Analog Electronics, PCB Layout, EMC
    • Seven Transistor Labs
Hmm...

Current limiting?

PFC?

Operating temperature range?  Environmental conditions (indoors / low dust, industrial, outdoors, salt spray..)?

Stability (%/month, ppm/month..)?

Lifetime?  (5khr+?)

Target price, in what production qty/yr?

Target NRE/design cost?  Design schedule?

Tim
Seven Transistor Labs, LLC
Electronic design, from concept to prototype.
Bringing a project to life?  Send me a message!
 

Offline b_force

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    • One World Concepts
Send you en PM, are you still looking for people?
"If you can't explain it simply (or at all), you don't understand it well enough." A. Einstein

http://www.oneworldconcepts.com/ | http://www.soundprojects.com
 


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