I am looking to produce a 555 voltage quadrupler to convert 14v to 50V with and output current of 10mA. the frequency can be 50Khz to 120Khz. I want to avoid guessing the capacitor values, but I am unaware of the formula for calculation the capacitor values. Can anyone help?

 

It took 9 posts for us to get to the reality of the situation.
10 ma at 50V is 1/2 watt- doable, but maybe not the best solution.

Here is a paper on multiplier design, it's oriented toward high-voltage designs, but the math still works.

 

It took 9 posts for us to get to the reality of the situation.
10 ma at 50V is 1/2 watt- doable, but maybe not the best solution.

Here is a paper on multiplier design, it's oriented toward high-voltage designs, but the math still works.

It's actually an 11 year old thread that has been resurrected. Thanks for the link though!

 

It will pprobably be easier and more effective to build an inverter to output the 50 volts, and certainly the regulation will be much better.