Electronic circuits & Projects » Testers

Network RJ45 Cable Tester

ElectroSchematics.com — Thu, 02 Sep 2010 11:25:49 +0000

This is a multifunction RJ45 network cable tester. It is the design of the network cable (RJ45) test, and telephone (RJ11). It is cheap and easy to use. It works for network, telephone, cable with RJ45 half “Registered Jack” plug immediately indicate whether a crossover network cable or straight, flashing a yellow or green LED. [...]

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Network RJ45 Cable Tester

RF Network Cable Tester Here is an ideal Network Cable tester to check whether...
Reflex Tester Circuit Testing human reaction speed is not only a fun way...
Booster for Cable Radio With the aid of this circuit it is possible to...

Infrared Remote Tester

ElectroSchematics.com — Sat, 10 Apr 2010 14:06:23 +0000

This is an infrared remote control tester circuit which gives both an audio and visual indication that a remote controller is functioning. D1 is a reverse biased photodiode which forms an IR detector. It’s output is buffered by IC1a and then enters a pulse stretcher comprising C2, R2 and IC1b. The pulse stretcher enables even [...]

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Infrared Remote Tester

InfraRed Remote Control Tester This small InfraRed Remote Control Tester circuit is used for...
Remote Tester Circuit A simple Remote tester to check all types of Remote...
Infrared switch operated by remote SFH505A made by Siemens combine infrared diode receiver, amplifier, demodulator...

LED Tools

D.Mohankumar — Fri, 02 Apr 2010 09:32:21 +0000

Here are two simple tools for the Hobbyists to check their Prototype boards. These use LEDs as visual indicators for the quick check reducing the job of multimeter testing Continuity Tester This can be used to check the continuity of PCB tracks, wires, transformer windings, fuse, diodes, resistors etc. It uses a Red LED to [...]

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LED Tools

LED Component Tester with Torch Here is a simple tester for Hobbyists. This LED Component...
Polarity indicator Is is easy to test the polarity of a circuit’s...
Three State Voltage Indicator This is an ideal circuit to monitor the Voltage level...

LED Component Tester with Torch

D.Mohankumar — Sat, 06 Mar 2010 13:10:38 +0000

Here is a simple tester for Hobbyists. This LED Component tester can test the integrity of electronic components from resistors to ICs before soldering. It reduces the job of testing the components using multimeter. The tester gives LED indications about the Good or Bad conditions of the components. A White LED torch is added to [...]

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LED Component Tester with Torch

Lamp & Fuse Tester Why a lamp tester or fuse tester? Testin cables, wires,...
Simple Water level Indicator This is one of the simplest water level indicator that...
LED Tools Here are two simple tools for the Hobbyists to check...

Reflex Tester Circuit

ElectroSchematics.com — Fri, 22 Jan 2010 17:27:06 +0000

Testing human reaction speed is not only a fun way of spending time, but also allows the drawing of conclusions, for example on the skills of a momentary driver. When the contact closes the power button, the astabil multivibrator built with IC1 produces pulses that are applied to counter IC3. D1 …. D10 LEDs light [...]

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Reflex Tester Circuit

Network RJ45 Cable Tester This is a multifunction RJ45 network cable tester. It is...
Infrared Remote Tester This is an infrared remote control tester circuit which gives...
LED Component Tester with Torch Here is a simple tester for Hobbyists. This LED Component...