Pulse Scrambler (CB20547E)

This circuit assumes that a pulse produced by S1 has a constant duration determined by R1 and C1.

RRRRRTimed alarm for car (CB6776E)
This circuit was found in an EDN from the 90s. The circuit employs a double 555 and uses the...
Simple Night Switch 1 (CB4562E)
This circuit was obtained from a 1977 magazine, but can still be mounted using BC548 for TR1 and...
Bargraph Voltage Indicator (CB4893E)
This indicator makes use of an LM339 voltage comparator circuit that contains 4 internal...