This circuit amplifies signals from 0.5 Hz to 300 kHz. We found it in an old documentation. Equivalent transistors may be used. The gain is 20 dB.
This medium wave radio with germanium transistors is from a 1957 Raytheon publication. Modern...
This circuit was obtained from documentation from the 90s. The solution that can be found...
This CMOS circuit with the 4011 can be used in an infrared remote control. The circuit can be...