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Meters & Detectors

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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KA2284 Stereo audio level indicator

Last Updated on: November 23, 2021 by Apichet Garaipoom
KA2284 Stereo audio level indicator

Here is cheap Stereo audio vu meter circuit with PCB. using KA2284 x2 and 10 LED or 5 LEDs per channel, it is simple to builds and few parts. put projects

Categories Meters & Detectors Tags Sound Level Meters, VU Meters 3 Comments

Simple Moisture Meter using 2N2222

Last Updated on: July 12, 2021 by ElecCircuit.com
Prototype-simple-moisture-meter

This simple moisture meter circuit uses for level moistness temple of the earth. Fine the value R2 give Meter read the value has 1mA. When the moistness […]

Categories Meters & Detectors Tags Soil Moisture Meters, 2N2222 2 Comments

Simple solar plant watering alarm

Last Updated on: November 23, 2021 by Apichet Garaipoom
we test Simple solar plant watering alarm it works very well

This is simple Solar plant watering alarm circuit. It will sound alarms when the soil is dry. The trees have died. It the solar sell is 6V DC power supply

Categories Meters & Detectors Tags Water Sensor Alarms, Soil Moisture Meters 10 Comments

8 Low Battery Voltage Alarm indicator circuits

Last Updated on: November 23, 2021 by Apichet Garaipoom
Battery low voltage alarm indicator circuits

Why your circuit does not work? Because the battery is run out. These low voltage indicator circuits may helpful for you. If you can know before and change a new one right now. It makes you not have to waste time when using those projects.

Categories Meters & Detectors Tags Battery Testers, Battery indicators 14 Comments

5 DC/AC Blown Fuse indicator circuit with LED Display

Last Updated on: July 19, 2021 by Apichet Garaipoom
AC DC fuse indicator circuits

This is Blown Fuse indicator circuit by LED Display. A Fuse be the equipment protects that use often most. Because of cheapness can use protect electronics

Categories Meters & Detectors Tags LED indicator lamps, Power supply protection 6 Comments
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