This circuit, found in 1993 documentation, is the traditional relaxation oscillator configuration with unijunction transistor. The frequency depends on C and the resistance value R.
Found in a Popular Electronics from the 90s, this circuit makes use of an unusual integrated...
We found this circuit in a 1977 CMOS oscillators documentation. The power can be sourced with...
We found this circuit in a documentation for 1977 American radio amateurs. The LM336 integrated circuit...