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.
The integrated circuit used in this 80's application is not common today. However, modern...
According to the consulted American publication of the 1980s, a zener diode can be used for DC...
This circuit, found in an American publication from the 1970s, produces an audible tone in a...