This circuit for analog TV was found in an American documentation from the 90s. The circuit uses an unusual power transistor today.
The figure shows how to implement an inverter amplifier with a Norton operational amplifier. The...
This circuit has a 2 V full scale using a 4-and-a-half-digit A / D converter. The circuit is...
VR can be from 50 to 220k it is recommended to connect a 100-ohm resistor in series. The lamp may...