12W Phonographic Amplifier and Compressor (T499E)

This 8-tube amplifier with 12 W output was found in an American publication from 1947. The output is in counterphase with pentode tubes.

| Clique na imagem para ampliar |

4060 Touch Switch (CB3850E)
This circuit uses one of the 6 CMOS inverters of a 4060 as a touch on / off switch. The power...
Field Strength Meter (CB22025E)
This aperiodic circuit was found in an old English documentation. The transistor can be any JFET...
Light Alarm 741 (CB20305E)
This circuit can function as both a light alarm and a shadow alarm. The components are common. The...