This circuit is from an Electronics Now from the 90s. The circuit uses a power integrated circuit from the time that must be equipped with a heatsink. The power supply is 18 V.
This simple MW radio does not need an external antenna to pick up local stations. It was found in a...
This metal detector circuit uses an AM radio as an indicator. The radio is placed off-station and tuned...
This simple expandable circuit was obtained from a Popular Electronics from the 80's. The supply...