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Blinking, Flashing and Fading LED Light Circuits Using IC 555

In this post we will learn how to assemble an IC 555 astable circuit for generating interesting LED flasher and fader light effects with some minor modifcationbs and enhancements. Why use an IC 555 Astable The astable multivibrator mode is the most fundamental mode of operation of the IC 555. In this mode it basically … Read moreBlinking, Flashing and Fading LED Light Circuits Using IC 555

Making a RTD Temperature Meter Circuit

In this post we learn the making of an RTD temperature meter circuit, and also learn about different RTDs and their working principles through formulas. What’s an RTD A RTD or resistance temperature detector works by detecting the difference or an increase in the resistance of the sensor metal when it’s subjected to heat. This … Read moreMaking a RTD Temperature Meter Circuit

3 Tested 220V High and Low Voltage Cut OFF Circuits Using IC 324 and Transistors

The article describes 3 accurate automatic over and under voltage cut out circuits can be made at home for protecting the domestic appliances from sudden dangerous high and low voltage influxes. The first designs explains a LM324 transformer based circuit, the second circuit uses a transformerless version, that is it works without a transformer, while … Read more3 Tested 220V High and Low Voltage Cut OFF Circuits Using IC 324 and Transistors

Transformerless Automatic Night Lamp Circuit

In this post we learn how to make a transformerless automatic darkness activated LED lamp circuit, using a couple of transistors and capacitive based power supply, eliminating the use of any bulky transformer. Compact Transformerless Design Although the concept may look pretty familiar and common, the main feature of the circuit is its low current … Read moreTransformerless Automatic Night Lamp Circuit

Single Transistor LED Flasher Circuit

Can you imagine of making a formidable little LED flasher or blinker using just a single transistor and a couple of other passive parts. How it Works That looks too good to be true, however the following diagram will simply prove that it’s really possible to create a legal LED flasher circuit using just one … Read moreSingle Transistor LED Flasher Circuit

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