In the figure we have the way to use the transistors of an old-paired pair as a trigger circuit. The circuit is by Philips from an old documentation.
This circuit decodes FSK signals with frequencies of 1070 and 1270 Hz and can be used in data...
Found in Motorola's 1968 power circuit manual, this circuit has a high input voltage and no...
We found this circuit in a Popular Electronics from the 90's. The circuit uses three SCRs to...