Institute Newton C. Braga

Circuit Bench

Small 12 V x 35 mA power supply (CB8681E)
Found in 1969 Ferranti documentation, this small font is characterized by its low ripple....
Photo Sensitive Relay (CB14032E)
This sensitive photo-relay can be mounted with modern transistors such as BC558 and with the...
Lamp Switching by One Pair of Wires (CB4157E)
Indicated as a joke or challenge this circuit shows how it is possible to control two lamps using...