This circuit has an automatic dynamic gain control in a range of 6 dB to 40 dB. We found it in documentation from the 90s. The bipolar transistor is a general purpose type.
This symmetrical limiter or reaper circuit is based on a zener diode. Voltage drop across common...
This circuit is from an English book from the 1980s. Transistors can be general-purpose types of...
This circuit uses a 455 kHz IF coil and is suitable for SSB listening on a standard receiver. It...