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 |

DC Motor Speed Control (CB18964E)
This speed control for motors up to 500 mA was obtained in an old European documentation, but it...
Triangular Limiter with the 741 (CB13514E)
This circuit cuts a rectangular signal, and a trapezoidal signal is obtained. The circuit is from...
Wien Bridge Oscillator (CB9039E)
This low frequency sinusoidal oscillator was obtained in documentation from the 1970s. Operational...