Can you replace a capacitor of two different sizes?

Answer 1

Not sure what you are asking.

There are two formulae for working out equivalent capacitance:

• Two capacitors in parallel

The equivalent single capacitance is the sum of the two capacitors:

Ce = C1 + C2

• Two capacitors in series

The equivalent single capacitance is the reciprocal of the sum of the reciprocals of the two capacitors:

1/Ce = 1/C1 + 1/C2

⇒ Ce = C1C2/(C1+C2)

So you can replace two capacitors by a single one, or a single one by two.