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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10 W Amplifier (CB6158E)
This high quality circuit with complementary symmetry was found in an Electronics World of 1966....
Headlamp timer 2 (CB6050E)
Found in an Electronic Design this circuit controls a headlamp by triggering a time determined by the...
15 V switching regulator (CB8693E)
This small switched regulator was found in an 60’s Optical Electronics. The circuit uses an...