Relay driver (CB20549E)

Found a documentation on PCs from 1996, this circuit can be used as a shield. The relay is rated at 100 mA of coil current.

Fiber Optic Motor Control (CB6232E)
This circuit was found in an 80's General Electric documentation. The circuit uses components from the...
Three Decades Wien Bridge Oscillator (CB14908E)
This oscillator can be used as a signal generator in a workshop, generating sinusoidal signals from...
2 A photo relay (CB8260E)
This circuit is from a 1970 General Electric documentation. It can be found with variations on this...