Found in RCA documentation two years 70, this circuit triggers an incandescent lamp at dusk. The circuit uses an LDR of the time.
We found this circuit in an 80's Electronic Design. It makes use of couplers of the time that can...
This circuit is from a 1992 publication, but can be mounted very easily today. The circuit is...
The purpose of this circuit is to measure the resistance of an antenna at the resonant frequency....