Optical sensor for PC (CB20548E)

This circuit was found in a PC documentation from 1996. It can be used as a shield with modern microcontrollers.

Redisparable Monostable with the 4047 (CB11444E)
A positive transition in the trigger makes the outputs change state and remain so for the time...
5 Condition Indicator (CB6677E)
Found in an old publication about neon lamps this circuit works directly connected to the power...
5 A Current Boost (CB14533E)
This suggested application of the integrated 78xx voltage regulators is from one of the many...