3 idea Polarity & Car Electrical Probe tester circuit
See 3 ideas of 555 DC polarity probe tester circuit. Check Car Electrical in easy, find open circuit, automotive short circuit, loose connection. Learn more Read more
Meters & Detectors
Digital multimeter circuit using ICL7107
his is Digital multimeter circuit using ICL7107. dc digital meter circuit to smart full function, measure DCV, ACV, DC Amp meter, AC Amp meter, Ohms […] Read more
8 Light sensor alarm or Sensitive Sound Generator
These are four light sensor alarm circuits, when be become dark, or Light sensitive switch.Use part is important light sensor LDR light dependent resistor […] Read more
Digital voltmeter circuit diagram using ICL7107 / 7106 with PCB
Here is simple ICL7017 digital voltmeter circuit easy to build and cheap because it is high technology, by single IC,small number, along by LED 3 digit. Read more
How to test a diode without meter
This Diode tester circuit can check the diode the good or bad and also can indicate its polarity. using op-amp 741IC and LED for display. […] Read more