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discharging the capasitors

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SimonJ

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I have two capasitors. Each capasitor is charged from different source and i can not connect those capasitors together ( serial or paralel).

what i need is:
- sum of both capasitors discharges and transfer to one output ( + , - ).

capasitor 1 = 200V ~ 10uF
capasitor 2 = 200V ~ 10uF

After discharging them in the same time, output should be cca 400V.

How to connect this and which diodes do i need ?
 

SimonJ

So, you need a voltage doubler? Try this circuit (attached) to do the connections.
For the diodes, use 1N4007. In this output you will have DC voltage. Also, don't use capacitor for 200V with exactly 200V. Use capacitor voltage 25% higher.
Note: use this doubler only to drive low currents.

Good luck!
 

Note: use this doubler only to drive low currents.
Click to expand...
If i understand you correctly you are passing 400V to transformer. I dont know the current in those fully charged capasitors, but how much current can i get out from transformer (in the input is 400V )? Im asking this becuse i want ( as example ) connect small DC motor to transformer output, so i need "big" current to start this motor.

What do you think, how to make this ?

btw. im trying to make this per on/off switch. When you press the switch both capasitors will be discharged on one output.
What is the best place to set this switch, on your design?
 

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