We found this tube receiver in a 1950s Japanese publication. The circuit uses 5 tubes and has an RF amplifier stage for greater sensitivity. The power supply is not shown on the circuit.
This circuit is from an old manual of operational amplifiers. The setting can be adapted to work...
Other series amplifiers such as the MC3301, MC3401 and LM2900 can be used on this circuit. We found...
The duration of the output pulse in this circuit depends on C. This capacitor can have values in...