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.
This sophisticated home alarm was found in a 1992 publication. Using common components, it has...
This circuit produces pulses of great intensity and short duration at a frequency of approximately 1 kHz....
This old voice circuit suitable for telephones of the time was found in a Radio Electronics from...