9 V to 5 V converter LT1175 (CB14616E)

We found this circuit in the 1997 Linear Technology Applications. The components used were common at the time.

Operational Shield Sensor (CB18980E)
This light sensor shield, with operational and TTL compatible output or microcontroller was found...
High Speed Circuit Breaker (CB6077E)
This circuit is from a 1980s Motorola documentation. The circuit can be made with modern...
Pulse Encoder (CB4444E)
The number of pulses produced by this circuit depends on the switch pressed. The circuit is from...