Infrared Remote Control Tester

This is a fairly easy circuit that can be used to test TV and VCR remote controls. The infrared detector module (GP1U52X) (Radio Shack 276...

Decibel Meter

The circuit below responds to sound pressure levels from about 60 to 70 dB. The sound is picked up by an 8 ohm speaker, amplified by a tra...

Photo Transistor Detector

All of the circuits on the PCB are configured so with the intention of as the photosensors are dark, the output of the 556 timers want stay ...

16 × 2 LCD Volt Meter & Ampere Meter With PIC

Volt meters & ampere meter with PIC can be used to measure voltage and current simultaneously. The series of volt meters & ampere me...

Michas AVR-Transistor tester

Everyone knows the problem: you have a transistor, but you can not read the signature. Or you can not find the datasheet. You have a diode o...

Measure your stress level – Tension meter

If you, like so many other people in this day and age, arrive home from work stressed out and with the problems of the day still lingering,t...

IC 555 Tester Circuits

555 timer tester is a simple circuit that serves to test the condition of IC 555. 555 timer circuit tester, in principle, start the timer 55...

Capacitor leakage circuit tester

Generally capacitor that complement with television circuit is often leaked. Consequently spots more rugged display disturbing images runnin...

Transistor checker tool with circuit

The above sequence is a circuit of development of the transistor circuit tester before, which of course added few more components , and resu...

Transistor quality checker

Transistor are the components that have never missed on any electronic circuit . To determine whether the quality is still good or is damage...

Radio signal interference detector circuit

This circuit is  good for finding component causing incidence trouble voice at radio-set of receiver. Have been realized that in this time a...

Simple Remote Control Tester

Nearly always when a remote control doesn’t work, the underlying problem is elementary: the unit does not emit light. The cause may be dry s...