This circuit was found in an Electronic Design. It makes use of a relaxation oscillator to trigger an SCR and two relays. The circuit operates at frequencies of 12 to 180 cycles per minute.
This circuit also detects leaks and rain. I found it in a 1967 English magazine, but it can be...
This circuit was obtained in the SGS manual of linear integrated circuits of 1982. The maximum...
The CMOS 4046 integrated circuit is not very common today, consisting of a very efficient PLL for...