Using one unijunction transistor and two bipolar transistors, this circuit generates a signal from 25 Hz to 3 kHz. The circuit is from Electronics Now magazine, January 0, 1994.
The deviation of characteristics of this circuit normally referred to the temperature is very low....
Found in a 1969 Electronics World, this circuit generates low frequency signals with two...
Suggested by Texas Instruments in 1968 documentation, this circuit uses components from the era....