How to calculate the withstand voltage of capacitors after series-parallel connection?

Let's talk about two capacitors with the same voltage level and model, such as two electrolytic capacitors with rated voltage of 100V.

If these two capacitors are connected in parallel, the total withstand voltage after parallel connection is still100v;

If these two capacitors are connected in series, it is necessary to increase the voltage-sharing resistor and equalize the voltage to ensure that the voltages on the two capacitors connected in series are equal.

After series connection, the total withstand voltage is100 v+100 v = 200 v;

If the pressure is uneven, the total withstand voltage will not reach 200 V.

When two capacitors with different voltage levels are connected in parallel, the voltage withstand value is based on the capacitor with low voltage;

If two capacitors with different voltage levels are connected in series, the situation will be complicated; You can think for yourself.

If two different types of capacitors are connected in series, the situation will be more complicated. There is actually no such application.

Two different types of capacitors can be connected in parallel, and the withstand voltage value is based on the capacitor with low voltage.

At present, there are four 4uF capacitors, all of which are 500V V withstand voltage. First, connect the two capacitors in parallel and then in series to form 1000V,

However, if connected in series, it is necessary to add additional voltage resistance to equalize the voltage.