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 |

Up to 10 hours timer (CB20360E)
Using bipolar, FETs and unijunction this long-lasting timer can reach 10 hours with good quality...
High Input Impedance Operational (CB14094E)
The configuration shown is from the National Semiconductor Linear Applications Handbook. The...
Sinusoidal to square converter (CB9614E)
This shield circuit uses a common CMOS port. The voltage depends on the interfaced logic. The...