12 V Power Supply (CB24505E)

To power small projects, we found this circuit in the Radio Electronics magazine of May 1977. The transistor must be equipped with a heat sink.

| Clique na imagem para ampliar |

Universal Motor Speed Control (CB14716E)
The circuit shown is from the GE semiconductor manual of 1977. In the table we have the values of the...
Fast optical switch (CB8263E)
This 1967 Ferranti circuit uses company components. These transistors can be replaced by modern...
100 mA Symmetric Regulator 78L and 79Lxx (CB15338E)
This 15 V regulator uses the integrated 100 mA L series. The circuit was suggested by Motorola's Linear...