This simple 555 component tester was found in the November 1992 issue of Radio Electronics magazine. The circuit is powered by 6 to 12 V batteries.
This circuit uses currently uncommon components, including the 10.7 MHz (FI) filter. This circuit was...
This is a 6-transistor transistor receiver manufactured in the 60s. The circuit is a...
This very simple amplifier was found in the Philips Databook of 1990. The circuit is suitable for...