Small phonographic amplifier (T1547E)

This small 1W turntable amplifier was found in the 1975 RCA tube manual. It is a commercial circuit at the time.

| Clique na imagem para ampliar |

() CB14409E 5V x 4 A Switched Converter
The circuit presented is from the Linear Applications Handbook of the National Semiconductor of...
Descending Timer (CB16612E)
This timer counts down the times until, at the end, it activates a relay. The programming time is...
Power control (CB23709E)
This power control with SCR was found in Radio Electronics from April 1966. The components are...