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Flashing beacon circuit

2017-02-01 01:02  
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A flashing beacon has many uses. It can be employed as a distress signal on highways or as a direction pointer for parking lots, hospitals, hotels, etc. Here we present a flashing beacon that uses well-known regulator IC LM317T. As LM317T regulator can deliver more than 1 amp. A small 12V, 10W bulb with a high-quality reflector can serve as a good visible blinker.

A 12-15V, 1A DC supply is connected to the input pin of the IC. The IC is provided with an aluminium heat-sink to dissipate the heat generated while delivering full current. For the shown values of resistors and capacitors, the bulb flashes at approximately 4 cycles per second. The number of flashes depends on the charge-discharge time of the capacitors. Different values of resistors and capacitors can be used to increase or decrease the number of flashes of your flashing beacons.

Flashing beacon circuit diagram

flashing beacon

Flashing beacons pcb layout

the pcb design was made with expressPCB.
flashing beacon pcb layout

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