10W Amplifier with 6 tuber (T492E)

We found this 6-tube amplifier in a 1947 publication. It is a Public Address amplifier with excellent performance using triodes on the output.

| Clique na imagem para ampliar |

500 to 5000 Hz Astable 4001 (CB16313E)
To obtain variable frequency signals, the circuit in the figure is recommended. In this circuit, the...
Cells and Batteries Test (CB22141E)
This circuit was found in old English documentation. It can be improved by using resistors of...
Touch Volume Control (CB10566E)
This circuit was published in a 1979 magazine, but it can still be easily assembled as the...