This circuit was found in an Elektor from the 90s. Transistors are common and status indications are made through LEDs.
This window comparator configuration is from a 1980 publication. It is a conventional circuit that...
This isolated shield for triac was found in old European documentation. The resistor R1, in fact,...
August 2016 - It can be obtained from Mouser Electronics the new pressure transducer M5600 from TE...