Constant current source (CB20484E)

This circuit uses a current regulator from the 90's. This component is uncommon nowadays. The transistor admits equivalent.

Transparent Octal Latch (CB15750E)
The circuit shown in the figure on the right can be used on a data transfer bus with the use of an...
Photo Darlington Activating a Relay (CB14627E)
This circuit was found in a technical documentation from Texas Instruments, using a...
Temperature compensated regulator (CB8692E)
This circuit was found in a 1965 Electronics Design. The configuration can be applied to current...