Ammeter (CB9660E)

This current meter with many scales was found in a 80s American documentation. The operational amplifier is from that time, uncommon nowadays.

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Sequential Flasher (CB6260E)
This sequential beacon was found in an 80's Radio Electronics. The circuit can be designed using modern...
Triac power control with (CB4679E)
This is one of the possible triac power control configurations using as a trigger element a...
Sensitive Photo Relay (CB894E)
This photo-relay uses a Darlington stage to increase sensivity. Any photo-transistor can be used....