Simple 1-tube receiver (T960E)

This 1V heater tube circuit was found on a Radio Craft from 1945. The circuit is for medium wave and can be used as a tuner.

PNP Constant Current Source (CB1242E)
The load current can be adjusted up to about 1 A. The transistor can be TIP32 or TIP42. The...
Diac Voltage Sensor (CB12992E)
The circuit shown in the figure is triggered by an input voltage determined by the setting of P1....
Function Generator (CB6359E)
This circuit is from a 1980s Signetics documentation but is valid for modern operating. Next to...