Mechatrofice Blog

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Police strobe light led flasher circuit with 555

Strobe lights are commonly used as emergency vehicle lights for visual warnings. Their light effects are similar to the flashing light in police vehicles, ambulance, beacon light bars, etc. The given strobe light circuit...

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Brake light flasher circuit

Simple flashing brake light The circuit can use to make a simple pulsating stop brake light which continuously flashes as long as the brake is applied. Here we are using a 555 astable multivibrator...

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UM66 Melody Generator circuit

The given melody generator circuit is built with musical IC UM66. A melody generator using um66 is very inexpensive and simple to assemble. The circuit can be used as a door bell, musical alarm,...

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Automatic battery charger circuit 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 automatic emergency light circuit

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....

Pyroelectricity applications 0

Pyroelectricity applications

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 wiring?

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 and Polar 0

How to convert phasor forms ? Rectangular and 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 diagram

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...