Thermostat Delay Relay Timer Circuit

Dec 29, 2012

The circuit given below describes a time delay relay system which is used for keeping a hot air blower working under a specifically programmed timing sequence. The idea was requested by Mr. Doug Shadix, let's learn more:

Simple 220V SMPS, Buck Converter Circuit Using VIPer12A IC

Dec 28, 2012

The presented article explains a simple buck converter or an SMPS circuit using the IC VIPer12A from STMicroelectronics. The circuit uses negligible number of external components yet is able to operate directly from mains AC input.

Li-Ion Battery Charger Circuit Using IC LP2951

The following post explains a very simple yet safe Li-Ion battery charger circuit using just a single IC LP2951.

Make this IC 556 Pure Sine Wave Inverter circuit

Dec 27, 2012

The following article explains a pure sine wave inverter circuit using the IC 556 which forms the main sine wave processor device in the circuit.

Generator/Alternator AC Voltage Booster Circuit

Dec 25, 2012

The article explains an alternator power booster circuit which was unveiled by one of the keen followers of this blog, Mr Michael Mbamobi. Let's learn more about the details.

Make this LED Tail Ring Light Circuit for your Car

Dec 21, 2012

The following article describes a fancy LED sequencing/diverging ring type light which can be used as a tail brake light  in cars. The circuit idea was requested by one of the avid readers of this blog, Mr. Bobby. let's learn more.

Automatic LDR Controlled LED Emergency Lamp Circuit Problem

Dec 19, 2012

The following post discusses an automatic LDR controlled emergency lamp circuit problem which was requested to me via email by one of the keen followers of this blog. Let's learn about the issue and its solution.

Controlling Motor with a Cell Phone - Circuit Diagram Explained

Dec 17, 2012

The following article describes a very simple circuit idea which can be used for controlling a motor's rotational direction i.e. for moving it either clockwise or anticlockwise through alternate miss calls from your cell phone.

Alternating ON/OFF LED Fader Circuit - Slow Rise, Slow Fall LED Effect Generator

Dec 14, 2012

The following article explains a simple circuit which can be used for alternately switching LEDs with gradual brightening and fading effects. The circuit can be effectively used for generating creepy effects, for example it can be used for illuminating the eyes of a Jack-o'-lantern during haloween celebrations.

How to Generate PWM Using IC 555

The IC 555 is an extremely useful and versatile device which can be applied for configuring many useful circuits in the field of electronics. One very useful feature of this IC is its ability to generate PWM pulses which can be dimensioned or processed as per the needs of the application or the circuit.

Single Transformer Inverter/Charger/Changeover Circuit

Dec 13, 2012

An inverter circuit design  may be quite incomplete if it's without an appropriate integrated battery charger circuit. Though you may find many inverters having an integral battery charger, the section will mostly employ a separate transformer for implementing it. The following article describes a unique design which utilizes the inverter transformer for power inverting as well as for charging the battery.

Single Phase Preventor Circuit

Dec 8, 2012

We all know that for operating heavy electrical loads three phase power or AC is required in order to make the functioning efficient and viable. However this necessitates the presence of all the three phases at all circumstances. If any of the phases fail, can cause catastrophic consequences to the connected systems. The following artice offers a simple yet effective solution for tacking the above conditions.

How Shunt Regulator TL431 Works, Datasheet, Application Circuits Explained

Dec 7, 2012

In this post we learn how a shunt regulator IC works typically in SMPS circuits. We take the example of the popular TL431 device and try to understand its use in electronic circuits through a few of its application notes.

Automatic Door Lamp Timer Circuit

Dec 5, 2012

The article explains a simple automatic door light timer circuit which activates every time the door is opened, and switches OFF after a predetermined time if the door is kept open for too long. The circuit was requested by one of the avid readers of this blog, Mr. Juan. Let's learn more.

High Current Triac BTA41/600B - Datasheet, Application Note

Dec 2, 2012

Triacs are one of the most important active electronic components which are exclusively used for power switching applications, these devices are especially suited to AC mains loads, and are able to switch large currents consistently.

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