Found in 1967 General Electric documentation this circuit uses a PUT and a diac to generate 1 kHz signals. The circuit has a start switch.
This circuit was found in an article in Radio Electronics magazine. The issue is from July 1992...
The CMOS 4046 integrated circuit is not very common today, consisting of a very efficient PLL for...
This circuit is suggested by National Semiconductor and makes use of the negative regulator LM2990...