Bar graph light meter by ic 741| Circuit Project

If you want simple meter the intensity of the light in a simple way. This circuit is very interesting, because with a LED display with 5 levels.The main equipment is uA741 the most popular op-amp circuit, to used the photo transistor is a device for receiver a lighting to change is electricity very low. We use IC1 acts boost up current, or to compare the voltage levels.The VR1 adjusts the offset voltage to the LED display complete , the intensity of light to measure.The power supply size use +9 V and -9V.

This entry was posted on Tuesday, September 20th, 2011 at 9:59 pm and is filed under Lighting, meter.

Circuit diagrams and schematics - Electronic projects

Bar graph light meter by ic 741

Electronic circuit projects
If you are beginners,It's easy for you.
Electronic project lab for my son

Circuit diagrams and schematics - Electronic projects

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Electronic circuit projects If you are beginners,It's easy for you. Electronic project lab for my son

Bar graph light meter by ic 741

Electronic circuit projects
If you are beginners,It's easy for you.
Electronic project lab for my son