Circuit for piezoelectric transducer (CB8968E)

This buzzer trigger can be used for small alarms. We find it in an 80’s American documentation. The supply can be done with voltages from 3 to 18 V.

| Clique na imagem para ampliar |

Shield 4011 (CB19289E)
This circuit causes an LED to flash at a frequency determined by capacitor C1. The circuit can be...
Neon flasher (CB9784E)
This flasher or neon signal powered by batteries was found in old documentation. The transformer must...
Digital Switch Mixer (CB4919E)
This circuit was obtained from an ancient American documentation, but appears elsewhere in this...