TV test pattern generator circuit with wireless
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.
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November 27, 2018
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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2 Crystal tester circuits with PCB
This is Crystal tester circuit using NPN transistors as main. LED1 is light up when a crystal is good and simple oscillator circuit works.
November 23, 2018
Simple remote control tester circuit
This Simple remote control tester circuit so use this photo transistor is light receiver from remote control.If it is nice to have bias of transistor BC558
November 10, 2018
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 system. [...]
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Stereo audio vu meter circuit using KA2284
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
October 12, 2018