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.
In the figure we have the basic configuration of an operational amplifier for audio signals. The...
This General Electric circuit produces pulses of light only when light stops shining on the...
Found in an Electronic Design of 1964 this circuit has a control for the frequency and another for the...