Analog VU Meter circuits using transistors, 5 to 20 LED
LED VU meter using transistor is analog circuit to show level of power audio signal. You can build 5 LED to 20 LED display with PCB.
9 Comments
September 18, 2018
Lie detector circuit
See and try building Lie detector circuit. The resistance of human skin using transistors and LED displays is small and easy application.
February 25, 2017
Schematic of very Simple preamplifiers using 2N3904
Very simple amplifier circuit using transistor 2N3904
It is Very simple amplifier circuit using transistor 2N3904 only, low noise than normal IC circuits, low distortion,frequency response: 20 Hz to 20 kHz.
July 3, 2014
Hifi transistor headphone amplifier
Two circuits of Hifi transistor headphone amplifier!
June 24, 2010