This circuit is from a 1980s Signetics documentation. The circuit separates the modulation signal from a carrier. The used components are not common today.
The purpose of this circuit is to improve a trigger circuit using a zener diode. The circuit was...
The Exclusive-NOR function can be achieved simply by adding one more NAND gate as an inverter to...
This simple Philips circuit from the 1960s can use any general-purpose transistor. The signal is...