RRRRRTimed alarm for car (CB6776E)

This circuit was found in an EDN from the 90s. The circuit employs a double 555 and uses the courtesy light switches of the car as sensors.

| Clique na imagem para ampliar |

Experimental Oscillator (CB22483E)
The values of the components in this experimental circuit are those of the previous circuit. The...
Electronic Trombone LM3909 IR5634S CB14288E (CB14288E)
The experimental musical instrument with the LM3909 is suggested by National Semiconductor in...
Rectangular Generator 741 (CB14890E)
With the values of the components indicated, the circuit generates a 1 kHz signal. The power...