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how to calculate C1 ?Hi,
The voltage drop is due to a capacitor (C1). Thus let´s call it "capacitive power supply"
as a very raw "over the thumb" estimation:
Calculate C1 to pass a current of 100mA at (220V - 24V).
Then add some headroom.
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C2 needs to be charged by C1. There will be only short pulses for charging... up to V_Zener.
The rest of the time it will be discharged by the load current ... and voltage will drop according standard capacitor formula.
***
I recommend to use a simulation tool to see more details about timing and ripple voltage.
Klaus
how to calculate this Resistor value?Series resistor required to limit inrush current and effect of harmonic grid voltage and transients.
What's the exact problem?how to calculate C1 ?
im not tht good with formulas or remembering how to calculate valuesHi,
What's the exact problem?
As a long term member ....
Klaus
What?as i said i dont know the name of the circuit which you called capacitive power supply
so i couldnt search for a way to calculate the values
I've guided you, there is more than enough guidance in the internet, even videos.i want some guide to calculate the values of this circuit