This transistorized shift register was found in a 1970s RCA documentation. The used transistors can supply 27 V loads with a 3A current of 3 A.
This shield circuit is from old documentation. The operational amplifier used is not common today...
This amplifier was obtained in an Electronics Now based on the LM1875. The circuit must be powered...
This circuit was found in a 1967 Electronic Design. The FET is from that time. Capacitor C is...