This bench circuit was found in the February 1998 issue of Electronics Now magazine. It can be used to obtain a very wide range of capacitances for testing.
Found in a 90s Popular Electronics, this circuit generates high voltage for radiation detecting...
In this circuit found in the December 1972 Radio Electronics magazine. R can be from 1k to 22k,...
This circuit allows you to vary the duty cycle without changing the frequency. An interesting...