This circuit was found in the November 1994 issue of Electronics Now magazine. The circuit is based on the 566 PLL and generates signals up to about 200 kHz.
This circuit uses a photo-transistor to trigger a circuit sourcing a square signal for the output. The...
We have in the figure a traditional amplifier configuration with operational amplifier. The source...
This basic configuration of voltage regulator using operational amplifier and zener was found in a...