This adjustable frequency circuit was found in December 1986, Radio Electronics magazine. The base frequency is given by C1 and the power supply must be 5 V.
This interesting sine wave oscillator circuit for the audio track uses an incandescent light bulb...
Found in Popular Electronics from the 1980s, this circuit is intended for switching filters with...
The shunt type regulators are connected in parallel with the load, deflecting the current to...