The supply of this circuit can be done with voltages from 8 to 28 V and the maximum output current is 3 A. The gain is 36 dB. The speaker impedance is 4 ohms.
This is the normal configuration for an oscillator with a tunnel diode. The crystal determines the frequency...
This receiver uses few components, having been found in a Japanese magazine in 1967. The coil has...
This circuit uses a 741 operational amplifier that must be powered by a symmetrical source of 6 to...