Fast optical switch (CB8263E)

This 1967 Ferranti circuit uses company components. These transistors can be replaced by modern equivalents. The sensor is an LDR.

| Clique na imagem para ampliar |

Touch Sensor (CB18533E)
This circuit with transistors was found in an old Japanese publication, translation of an American...
Old 8 W Amplifier (CB18436E)
This 8 W amplifier with germanium transistors was found in a Japanese documentation from 1967. The...
8 Bit DA Converter (CB5171E)
This circuit of the 80's makes use of components of the time. The circuit is from an American...