This circuit was found in an old Linear Technology documentation. The working principle can be harnessed in modern designs with current components.
With 12 V of power and 8 ohms in each speaker we have 1.6 W of power per channel. With a 22 V...
This circuit was obtained from the 2005 Linear Technology component manual itself. The output...
This simulation shows how a transistor can be used as a switch turning on and off in the LED. The...