آ سي 555 جي استعمال سام هڪ ايمرجنسي فليشر سرڪٽ

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آ سي 555 جي استعمال سام هڪ ايمرجنسي فليشر سرڪٽ

تمام آسان هاڻ توهان ڊزائين ڪريو

 

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The 1N4001 diodes, LM7805 voltage regulator, and the NE555 timer can be found at Radio Shack or you can get them and the other ICs on line I get my ICs at Mouser Electronics and found them to be good to deal with.
1 - LM7805 voltage regulator
1 - NE555 timer
1 - SN74LS73A JK Flip Flop
2 – FR151 diodes
2 – 2N3906 transistors

From your local Radio Shack or on line electronics store get:

1 – breadboard for testing
1 – protoboard
1 – switch
1 – Green LED
1 – 50k ohm pot (Variable Resistor)
2 – 150 ohm ¼ watt resistors
3 – 1k ohm ¼ watt resistors
1 – 220uF 16 volt electrolytic capacitor
1 – 4.7uF 16 volt electrolytic capacitor
2 – 1uF 16 Volt electrolytic capacitors
And lots of wire

I always get extras just in case I need them.

 

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Step 1: The First Circuit Evolution
It wasn’t long after starting and I realized the circuit would need a voltage regulator for the JK Flip Flop, 12 volts is fine for the 555 timer however the JK Flip Flops I have in stock run on 5 volts.

To the circuit I added an on indicator LED, LM7805 voltage regulator and high speed diodes to isolate and protect the circuit from power surges and feedback.

 

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هاڻ اچو ته سرڪٽ کي ٽيسٽ ڪريون

I assembled the circuit on a breadboard and test all its functions and driving circuits, you can add a transistor to the LED circuit the addition of a 2N3906 can boost the output from 50 milliamps to 200 milliamps to drive more LEDS, for driving circuits above 200 milliamps I like to use optocouplers to connect circuits of different powers.

I included drawings of the components for novices in electronics to make things easier for them to construct the circuit themselves.

 

[Sindhi Media]

The next step is to connect this circuit to the Luxeon Star high powered LED driver. With circuits of different voltages current and power I like to isolate them with diodes and optic isolators to prevent power feedback that can damage the lower power circuit, so I added three Isolating diodes and two optocouplers.

The Luxeon Star LED driver to use with this circuit is the six wires dimmable driver for strobe function you connect a 2N3904 transistor collector to Dim wire and emitter to dim ground wire and base to in coming signal.

For this function I replaced the 2N3904 with an optocoupler capable of carrying the same current, now the signals are carried by light and there is little chance of feedback or power surges damaging the signal circuit from the Luxeon Star LED driver.

 

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