This configuration can be applied to other operational amplifiers to increase the current capacity. The circuit is from the 80s. The transistors used are from that time.
In this oscillator a phase shift network formed by C1, C2, C3 and R1, R3, R4 determine the fase...
For inductive loads we have the configuration shown in the figure. Note that the optical coupler...
This circuit was found in the Linear Applications Handbook by National Semiconductor. It uses...