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:: Home » Meters & Detectors » Page 4

Meters & Detectors

TV test pattern generator circuit with wireless

Last Updated on: April 6, 2020 by Apichet Garaipoom
TV test pattern generator with wireless model

The TV test pattern generator circuit with wireless model. To assemble circuit easy, can transmit signal in wireless to video and audio As horizontal line. Read more

Categories Meters & Detectors Tags Electronic Test equipments 2 Comments

2 Crystal tester circuits with PCB

Last Updated on: August 17, 2022 by Apichet Garaipoom

This is Crystal tester circuit using NPN transistors as main. LED1 is light up when a crystal is good and simple oscillator circuit works. Read more

Categories Meters & Detectors Tags Electronic Test equipments, Crystal oscillator circuit 3 Comments

VU meter circuit Stereo/Mono 20 LED with PCB

Last Updated on: July 14, 2022 by Apichet Garaipoom
VU meter circuit Stereo_Mono 20 LED with PCB

High-performance LM3914/LM3915 VU meter circuit projects that widely popular can display with 20 LEDs on stereo or mono with 10 LEDs for all audio systems. […] Read more

Categories Meters & Detectors Tags VU Meters, LM3914 32 Comments

KA2284 Stereo audio level indicator

Last Updated on: July 6, 2022 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 Read more

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

Simple Moisture Meter using 2N2222

Last Updated on: August 18, 2022 by Apichet Garaipoom
moisture meter circuit

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 […] Read more

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

  • Amplifiers (95)
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