Posted inMeters & Detectors
The Op-amp IC tester circuit
This is an simple op-amp IC tester circuit that cheap and easy to build. for test many op-amp ICs fast check. for LM741, LM324, LM339, LM358, LM311 and more [...]
Posted inMeters & Detectors
Simple temperature to voltage converter circuit
This is a simple temperature to voltage converter circuit or an Electronic thermometer circuit there. Which will operate in a temperature range of 0 to 24 degrees Celsius (32 to…
Posted inMeters & Detectors
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.
Posted inMeters & Detectors
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.
Posted inMeters & Detectors
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. [...]