Tube Power Source (CB6743E)

This circuit is from a high voltage tube source. It does not include the filament voltage that must be supplied by a separate transformer.

| Clique na imagem para ampliar |

CMOS Time Base (CB17502E)
This circuit generates 50, 100 and 200 Hz signals from a 2.2768 MHz TV crystal. The circuit can be...
Small Transistor Amplifier (CB1370E)
This small power amplifier makes use of an output transformer given its design time. In fact, the...
Ohmmeter (CB21986E)
This resistance meter with the CA3130 was found in an English publication from 1977. The circuit has...