Measuring the capacitance of a varicap

Here’s a quick circuit that allows you to measure the capacitance of a varicap (also known as a varactor).

As varicaps generally have a very small capacitance (typically a few dozen picofarads) it pays to keep the wiring between the varicap (VC) and the capacitance meter as short as possible to reduce stray capacitance.

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One Response to Measuring the capacitance of a varicap

  1. Pingback: A guide to hacking Japanese car radios « My Blog

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