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 LM380-based circuit was found in documentation from the 1980s. The components are current, and...
This circuit makes use of an integrated LM2907. The circuit is from an old documentation being...
In the figure we have an amplifier using the 741 operational amplifier without the need for a...