6W Variable Tone Siren (CB25213E)

This CMOS circuit was found in the July 1990 Radio Electronics magazine. Power is for a 12V supply.

| Clique na imagem para ampliar |

Constant Current Source (NI011E)
This circuit sources a Constant current to a load. The current is determined by R2. In the...
Unregulated Power Supply 6 - 9 - 12 V x 1 A (CB1156E)
This power supply can be used to power circuits that do not require regulated voltages that can be...
Active antenna (CB6771E)
This circuit for medium and short wave range was found in an American documentation from 1992. The...