The integrated circuit used in this detector is uncommon today. We found it in a documentation from the 70s. Detection is done by an optical camera with LEDs and a photo sensor.
This circuit was obtained in a 1980 publication. The transistors can be BC548 or 2N2222. The...
We found this circuit in an old documentation. Its purpose is to turn on warning lights when the...
This circuit uses the Linear Technology LT6505 and was found in a 2005 manual. The circuit is for 24 V...