Modulated siren 555 (CB9201E)

This is one of the many modulated siren versions that can be found on our website. We found it in a Hands On Electronics from the 90s.

| Clique na imagem para ampliar |

Interface for resistive transducers (CB20995E)
We found this circuit in an Analog Devices documentation from the 90s. The circuit is based on a...
Triac Timer (CB24046E)
This circuit turns off a load after an interval of 8 to 80 seconds adjusted on the potentiometer. The...
Simple Alarm with SCR (CB24114E)
Found elsewhere in this section, this circuit is from the April 1971 Radio Electronics magazine. Note...