Playback Amplifier (14W)

This 7-tube circuit was obtained from an American publication in 1947. The circuit has a push-pull output with a source using a transformer.

| Clique na imagem para ampliar |

SCR control by LDR (CB7217E)
This circuit can be used to activate the lamp when it gets dark. We found the circuit in old...
Product detector (CB9684E)
Found in Motorola documentation from the 1980s, this circuit employs an integrated device from...
Step Generator 555 (CB11407E)
This circuit generates slow interval steps for controlling stepper motors. The circuit has two...