Charge pump

106

01:07:13

Attempt at understanding charge pumps. Need to figure out relationship between oscillation, capacitance, and initial voltage. For example how do I determine resulting voltage? Also how long does it take to get to the target voltage? There is clearly an asymptotic growth, yet acting more like a limit function.

published 10 years ago

metalgimp

10 years ago

I wanted to understand how charge pumps worked. It seemed that to get a better pump, I had to invert the sine wave with a capacitor.

Deanoj713

10 years ago

You might want to look up some info on full wave bridge rectifiers.

metalgimp

10 years ago

Another question: Half of the diodes do not appear to be doing anything... Can they be omitted? Also what would be the current?

engpal

10 years ago

Try to use coils then timers

GingerKing

10 years ago

I think you'll find this a lot less confusing if you start smaller. Use 2 caps, 2 diodes, 1 dc source, 1 square source. Then look at how the square source "pumps" up the voltage. What happens when you remove the diode? (Your diode answer) Im trying to teach you how to gain knowledge instead of giving you a bit of knowledge every time you need one. Sorry if that came out offensive. Good luck.

metalgimp

10 years ago

Rectifiers... know all about them. However I have been unable to get one to work reliably. But that was not the point of doing a charge pump. AC transformers are simple, but charge pumps are not. You saw I hope all the open questions I have. A more pointed and specific reason is to see how I can use this in solar panels.

metalgimp

10 years ago

Offensive? Not in the slightest. They are great ideas. I honestly didn't know that a charge pump would work with less diodes!

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