With this circuit, signals in the range of 10 kHz to 150 kHz can be received at close to 4 MHz from a shortwave receiver. The circuit is from a 303 Circuits from the 90s.
This circuit was obtained from an Electronics World of 1968. The transistor may be general purpose and...
This effects pedal was obtained in an English publication from 1980, but it can be easily...
This circuit produces horizontal lines or bars in a analog TV tuned between channels 2 and 5. L1...