# Capacitance in series and parallel Calculator

## Calculates the total capacitance of two capacitors in series and parallel. | ||

- Purpose of use
- Colpitts oscillator at VHF, calculate total capacitance across dual varicap diodes used for tuning, and also total capacitance across the feedback divider.

[1] 2019/04/10 15:25 Male / 30 years old level / Self-employed people / Very /

- Purpose of use
- Aside from being a ham radio operator, I also build crystal radios.

Many of the designs require a 500pF air variable capacitor, but all I could find was 630pF.

So using your calculator, I was able to see how much capacitance I needed to add in series to bring the 630pF capacitor down to 500pF.

It worked great, my sincere thanks.

[2] 2019/03/08 07:04 Male / 60 years old level or over / A retired person / Very /

- Purpose of use
- Short of correct values on two caps. Used to calculate replacments caps for old tape deck.
- Comment/Request
- Very useful

[3] 2018/08/27 21:07 Male / 40 years old level / Others / Very /

- Purpose of use
- calculate power rail for a tube amp

[4] 2018/08/17 13:15 Male / 40 years old level / Self-employed people / Very /

- Purpose of use
- Troubleshooting a power supply. Had a meter that only read a max of 10000uF. So, I had to series connect two of same to check filter cap value.

[5] 2018/08/12 01:16 Male / 60 years old level or over / An office worker / A public employee / Useful /

- Purpose of use
- calculate capacitance for antenna tuning

[6] 2018/08/06 18:40 Male / 20 years old level / An engineer / Very /

- Purpose of use
- Two diodes in series common capacitance for antenna planning.

[7] 2018/06/13 16:08 Male / 50 years old level / High-school/ University/ Grad student / Very /

- Purpose of use
- calculate the value for output capacitors of an audio amplifier

[8] 2018/05/27 01:53 Male / Under 20 years old / Elementary school/ Junior high-school student / Very /

- Purpose of use
- RC audio filter

[9] 2018/05/03 12:47 Male / 20 years old level / High-school/ University/ Grad student / Very /

- Purpose of use
- Quick answer to substitute series capacitors for a value I didn’t have
- Comment/Request
- Thanks!

[10] 2018/04/16 14:28 Male / 60 years old level or over / A retired people / Very /

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