This amplifier was obtained in a Harris documentation from the 90s. The circuit is high speed with a gain product x 300 MHz pass band.
This 1970s RCA circuit can be triggered by light or dark, depending on how the LDR is connected....
We found this circuit in the May 1996 Electronics Now magazine. The relay must have a voltage...
One pulse in the output is produce at each 5 pulses applied to the input. The circuit uses CMOS...