This circuit was obtained in Motorola documentation from 1969. The transistors are from the time with some modern equivalents.
Found in Popular Electronics from the 90s, this amplifier uses components from the time. The...
This control circuit for direct current motors uses a 741 and an operational one of unusual power...
This Schmitt trigger in current mode for frequencies up to 50 MHz was found in a 1969 Motorola manual....