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 |

Basic Latch 2 (CB7982E)
What sets this circuit apart from the previous one is the use of only one push button. The circuit...
Frequency Selector 741 (CB16232E)
The filter shown in the figure, using only an operational amplifier, is characterized by allowing 1...
Incandescent Dimmer (CB11373E)
This circuit controls the brightness of incandescent lamps up to 400 W for the TIC226 series...