Help me solve an equation for effective voltage value rectifier

[alibipl]

Hello. At the begining I beg to say that my English is average and I hope you can help me.
I need to solve this task:
Trace out reduced formula: Vrms=6*Idc/C . Idc[mA] C[uF]
This is for effective voltage value half-wave rectifier.
Thanks.

 

[nhoj]

Rectifier task

Hi alibipl,

What we need is to reduce the formula, right?
Of what factor of Vrms do we need to come up here?
The capacitor here is of course used as the filter. The best for you to do is to post the circuit here so it can be easily analyzed.

 

[alibipl]

Rectifier task

We need to start from one or few formulas and at the end we need to get one from the task. There is no circuit. It's simple rectifier. One diode and one capacitor.

 

[FvM]

Re: Rectifier task

I understand, that you try to verify an empirical formula or rule of thumb for rectifier ripple voltage. For an exact solution, the problem is incomplete cause the input voltage must be known, too. Also the input frequency.

Assuming Vin >> Vripple, the ripple voltage has a sawtooth waveform. RMS value can be easily calculated then.

I get factor of 7.07 for 50 Hz and 5.9 for 60 Hz.