Analog VU meter schematics
Let's use two simple Analog VU meter schematics. If we take the amplifier connected to the speakers. It is very dangerous.If your amplifier has a higher power than the limits…
Include: Volt meters :: Sound level meter :: Analog vu meter :: Soil moisture meter :: Digital meter circuit diagram :: Temperature measurements :: Electronic measurement tools :: Frequency meters :: Best battery tester :: Transistor tester project
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Simplest On-Off battery indicator using two LEDs
If you want to teach kids to learn simple LED circuit. This is one of good circuit. It is the Simplest On-Off battery indicator using two LEDs.
Simple temperature sensor diode 1N4148
Here is temperature sensor diode 1N4148 silicon type and 741- op amp, so easy. The Output to voltmeter. You will learn why diode becomes temperature sensor.