Mechatrofice Blog

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Automatic battery charger with LED indicator

Here the circuit for a 6V automatic battery charger which has overcharge protection with LED indicator and current limiting feature. The circuit regulates the charging of the battery by taking feed back of the voltage...

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Power failure emergency light

The automatic power failure emergency light charges the battery when the power is ON and automatically lights ON the LED when the power goes out. The circuit consists of a battery charging section, with...

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6V Battery Charger Circuit

Here the circuit for a 6V battery charger which can generate a regulated 6V DC output with over current protection. The transformer T1 steps down the input 230V/50HZ AC supply to a 6V AC....

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Rectifier Theory & Calculation : Half wave, full wave

How to convert AC to DC? A Direct current flows only in one direction, which means it has a constant polarity across its terminals. Where an Alternating current periodically changes its direction of the current, that...

Pyroelectric effect 0

Pyroelectric effect

Pyroelectricity is the property of a material to produce electrical energy when they are subjected to thermal energy change. Pyroelectric crystals are those poses the Pyroelectric effect, that is the ability of crystals to generate electricity when...

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Which bulb will glow brighter in series?

In series connections, we can always encounter with a popular question, which bulb will glow brighter when the lamps have different power ratings. We know that the current through a series path will be...

How to convert phasor forms ? Rectangular – Polar 0

How to convert phasor forms ? Rectangular – Polar

Phasor form conversion is the method of changing the representation form of a phasor. A Phasor is a rotating vector in a complex number form which expresses the magnitude and its phase. Sinusoidal signals...

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Infrared security alarm circuit DIY

This infrared burglar alarm can use at doors, entries, etc. To alerts us, when somebody crosses through the IR beam. As the IR beams are invisible to human eyes, the circuit can work as a hidden security device. To...

Servo control by push button switch 13

Servo control by push button switch

In this servo control push button project, the clockwise and anticlockwise movement of the servo shaft is controlling by two push buttons. The servo motor is interfaced with the Arduino (How to use a servo with...

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How to wire a Switch box

Switch box wiring is a common wiring arrangement used in most house electrical wirings or switchboards. The given circuit is a basic switchboard wiring for a light switch and 3 pin socket with control switch....