Category Archives: Lighting and LED Circuit

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 →

Posted in Lighting and LED Circuit, Test and Measurement | Tagged , , | Comments Off

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 →

Posted in Lighting and LED Circuit, Oscillators, Test and Measurement | Tagged , , | Comments Off

Supply Voltage Monitor with 555 IC

Posted on August 25, 2011 by Rend

This is a supply voltage monitor circuit, an indicator to show if the power supply is in good condition. Designed using the IC 555 timer, this circuit will flash the LED1 when the supply voltage surpass preset level.  With flashing … Continue reading →

Posted in Lighting and LED Circuit, Power Supply | Tagged , | Comments Off
1 2 3 4 5 6 7 8 9 10 11 12 ... 20 »