CMOS Siren (CB26157E)

Found in the 1991 Electronics Experimenter Handbook magazine, this circuit has good power and is recommended to be triggered by light.

| Clique na imagem para ampliar |

Precision Differential Amplifier (CB14118E)
The presented differential amplifier, indicated for instrumentation, was obtained in the 1994...
Dialing indicator (CB5995E)
This circuit provides a signal when dialing occurs. The circuit is powered by the telephone line...
TTL Variable Oscillator (CB25333E)
This circuit uses two TTL trigger inverters to generate signals that can be adjusted at R1. The...