This circuit uses an LDR as a sensor to trigger an LED indicator at a preset lighting level. The power supply does not have to be symmetrical.
This amplifier stage was equipped with a Motorola radio from the 70s. The transistors were from...
This version of the preamplifier is one of many that the reader will find on this website using the...
This 13.8 V power supply with 10 A was found in a 1997 documentation. It is intended for the...