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.
The charging current of this circuit is controlled by the temperature of the accumulators, which is...
El circuito de la figura es sugerido por National Semiconductor y puede servir de base para una...
The operational amplifier 747 is old, no longer being used, but the configuration is valid for...