Found in American documentation from the 1990s, this circuit generates signals in the 350 to 500 MHz range. The output power is in the order of 100 mW at 50 ohms.
This trigger uses two transistors having been found in ancient French documentation. The circuit is...
This simple alarm with latching uses a relay as the main element. The circuit is from a Radio...
This sensitive signal follower with an LM386 integrated circuit can be used in both audio and RF...