LED VU Meter by IC LM3914

This is Circuit LM3914 LED VU Meter. use IC LM3914 and Transistor BC109C. For Display power Music by LED

This be LED VU Meter by IC LM3914 circuit show with LED convenient for the stereo or sound all signal. This easy circuit again because use IC LM3914 show get 10 the level. Build easy because use the integrated circuit just one and the price is inexpensive. The detail is all , see in the circuit better.

Circuit Test Battery by LM3914
Circuit Test Battery by LM3914 This be the checks battery circuit , that easy and perfect , because it shows with LED 10 level. And can check battery get many the size be 1.5V ,3V,4.5V,6V,9 ...
VU meter 10 pieces using ic LM3914
VU meter circuit is an IC number LM3914. This is a circuit that is commonly used standards. Within the integrated circuit LM3914 is a voltage range advantage. This is the fourth leg split. Ref ...
LED 12V Lead Acid Battery Meter with LM339
In the circuit below, a quad voltage comparator (LM339) is used as a simple bar graph meter to indicate the charge condition of a 12 volt, lead acid battery. A 5 volt reference voltage is connecte ...
Audio VU Meter by LM324
This circuit uses two quad op-amps to form an eight LED audio level meter. The op-amp used in this particular circuit is the LM324. It is a popular IC and should be available from many parts s ...
LED Voltmeter for car battery by LM324
The circuit, is a comparator, can measure with step of 1Volt, the voltage of battery of car. The clue of voltage become after comparison of voltage of battery, that is applied in the inverting inp ...