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 |

High Voltage Audio Stage (CB13755E)
This audio step operates directly with the 110 V mains voltage rectified and reduced. The output...
20 V Differential Amplifier (CB4493E)
The MC1436 can also be used on this circuit found in Motorola's 1993 Linear Interface ICs. The...
High Impedance Microphone Preamplifier (CB19853E)
The FET admits equivalents like the BF245 in this circuit that we find in a documentation from the...