We found this circuit in the October 1996 Electronics Now magazine. The circuit uses LDRs as sensors and drives relays. The relays must have voltages according to the power supply.
Originally this circuit was created to produce synchronism pulses in TV cameras SSTV (Low scan...
We found this circuit in a 1986 documentation. It uses only LEDs, batteries, resistors and the...
This RF amplifier step has a dynamic range of 140 dB and can amplify signals from 0.5 to 40 MHz....