6W HiFi Amplifier (T479E)

Found in an American publication from 1947, this 4-tube amplifier has excellent sound quality. Its source makes use of a transformer.

| Clique na imagem para ampliar |

Programmable Timer (CB25200E)
This timer has a divider programmed by BCD switches. The circuit is from a Radio Electronics...
50 kHz Oscillator with CUJT (CB1255E)
This circuit, from the 1977 GE semiconductor manual, uses a unijunction transistor beyond the...
Automotive test (CB9120E)
This high impedance circuit uses a 12 V lamp to test voltages in a car. We found it in a Popular...