Category Archives: Test and Measurement

Simple IR Remote Tester

Posted on January 11, 2012 by Rust

The most common problem for infra-red (IR) remote control is the failure to transmit the pulsed infra-red light. The circuit shown in the schematic diagram below is an IR remote control handset tester. This device is very useful and easy … Continue reading →

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Digital pH Meter Signal Conditioner

Posted on November 21, 2011 by Rust

A pH meter circuit is basically an amplifier to boost a voltage signal which is produced by a pH probe. The pH probe itself is equal to a battery cell when submersed in the measured solution, producing a weak voltage … Continue reading →

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Solid-State (555 IC) Stroboscope

Posted on November 13, 2011 by Rend

Stroboscope is used to measure the speed of rotation, using the effect of strobed light, where a moving object will be perceived as stationary object if the light is strobed fast enough relative to the movement speed. When applied to … Continue reading →

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