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Guideline required for power supply design

curious_mind

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I have a crude requirements specification of a pulsed power supply, which is given below.
Input: 230V AC, power mains supply
Amplitude: +/-4kV, Current: 1mA, Pulse duration : 1us to 1ms. (variable)

I need to develop a quick prototype. Please advice what guidelines should I follow. Please provide suitable links(if any) to assist my design.
 
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FvM

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That's the specification of a high voltage pulse generator, not power supply.

Yet open specifications:
- load impedance range (capacitance, resistance)
- current limiting required?
- pulse rise/fall time
 

curious_mind

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Yes, I am getting those requirements too. Please provide me the pointers for starting the design
 

wwfeldman

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more requirements:

pulse repetition rate?

pulse "rest" voltage? - does pulse start at -4kV and return to -4kV
or does it start at 0V and sometimes pulses to +4kV and sometimes to -4 kV?

tolerance of 4kV? -4kV?
allowed droop during pulse?

current draw at 4kV? at -4kV?
 

Easy peasy

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This is not an easy build as you need a fast switch able to tolerate more than 4kV, either way, vitro-vac(?) make some relays that might help but the requirement for 1uS to 1mS will be hard to meet - any cable capacitance in the output will mess up the rise and fall times and smear out the pulse - you have not identified the actual load - which will make a difference to the design - there my be some thermionic valves that can do this or you may choose to cascade some 1200/1700 V mosfets to provide the gating action, generating the 4kV is the easy part ...

either way the advice of a power electronics consultant with some experience in this field would be worth the cost ...
 

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