This circuit is from an 80's documentation, firing when the input voltage exceeds 5 V. The SCR can be the TIC106 need not have a heatsink.
This circuit is from 1968 documentation. We can assemble it with more modern components such as a...
We found this video amplifier with integrated circuits of the time in the magazine Electronics Now of July...
This very high impedance circuit was found in documentation from the 1990s. The configuration can...