This old two-stage video amplifier uses integrated circuits that are not easily obtainable today. The circuit is for analog video and was found in an American 1980s documentation.
This circuit monitors the current in the loads. The NPN and PNP transistors admit the BC547 and...
jkjjjjj Used to measure night light for the purpose of adjusting camera exposure time, this...
I found this circuit in an article in a 2003 publication. The circuit is an example of how to...