This circuit is from a 1976 Motorola CMOS manual. It can be implemented with modern Darlingtons like those in the Texas TIP series. The load current depends only on the Darlington transistor.
Being able to function as a shield, this amplifier was found in documentation from the 70s....
Suggested by National Semiconductor, this circuit can be applied to almost any operational...
This is a VU-meter bargraph with up to 7 LEDs according the Power supply voltage. Adjusts are made by...