Quick Start Siren (CB25765E)

We found this circuit in the October 1994 Electronics Now magazine. The CMOS IC is uncommon these days and the output is low power.

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Two tone siren (CB9085E) This circuit was found in a 1980’s Radio Electronics. The signal must be applied to an amplifier stage. Capacitors can be changed to change effects. img src="images/stories/bc/144064"
Two tone siren (CB9085E) This circuit was found in a 1980’s Radio Electronics. The signal must be...
Dual-intensity LED (CB22128E)
This circuit switches the brightness of the LED. We found it in an English documentation....
Lamp Cruiser effect (CB17321E)
This circuit, found in a 1989 publication, only works with incandescent lamps. The maximum power...