Strobe light with police flashing effect

Electronics / DIY electronics 120 285 10

Disco strobe light with amazing police flasher effect! Compared to xenon, LED is more durable and unpretentious. It can also be used for the car

To build our strobe light we need a k561la7 microcircuit

Well, the rest of the details.

Everything can be seen from the diagram:

(click to enlarge)

R1 - R3 - 1 MOm

R4, R5, R6 - 2 kOm

R7 - R10 - 100 Ohm

C1, C4 - 10 µF

C2, C3 - 0.25 µF

VD - any

T1 - kt 315

T2 - kt817

Any zener diode for stabilization voltage 6....9 volts

switch - any

LEDs - any super bright ones.

If desired, the tuning resistors can be replaced with constant ones by first selecting them.

Using resistors R1 R2 we adjust the pulse switching frequency.

Using resistor R3 we adjust the frequencies of the “drag” pulses.

Using capacitor C3 we select the glow pulse time LEDs.

The switch is used to switch: regular strobe. or a police flasher.

Well, choose the number of circuits with LEDs yourself! For example, mine has 10 chains, and therefore 30 LEDs.

The design can be anything:

It’s better to make two strobes: one with blue LEDs, the other with red[b][/b]!

come back

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Comments (10)

#1 Bobyk13 Guests September 17, 2011 00:50
0

Is there a PCB for this circuit? And what analogues can replace KT transistors??????
- Answer
#2 NOTFRONT Guests September 17, 2011 09:14
0

Draw the board yourself. T2 - you can use kt815, and t1 - any n-p-n structure
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#3 Bobyk13 Guests 17 September 2011 15:41
0

Cool scheme!!! I figured out the transistors!!!
Can you tell me the principle of its operation, otherwise I’m just learning this; to put it briefly, I’m a kettle in the principle of its operation. Otherwise, I don’t understand, you just turn the potentiometers, they just light up, you turn them, they still blink differently and C1 plays a role here??? And what happens if you switch the SA switch????
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#4 nukolau Guests 9 June 2012 15:58
0

soldered the circuit! but they shine very dimly, they are super bright LEDs ! tell me what's the matter?
- Answer
#5 feelloff Guests 9 June 2012 16:36
0

nukolau, reduce resistors R7 - R10 to 10 ohms. or quantity LEDs in a garland.
- Answer
#6 kazak-09 Guests March 6, 2013 12:22
0

I have 1 small question... I am a beginner radio amateur and I can say I’m a novice in these matters... so don’t judge too much... I can’t understand in the diagram what these parts are? Please tell me...
- Answer
#7 feelloff Guests 7 March 2013 20:26
0

kazak-09, if you don’t know what it is, then you’d better give it all up.
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#8 Sergey Guests June 16, 2013 20:00
0

This is a Microchip.
- Answer
#9 Egor Guests 2 September 2013 10:26
0

This is the microcircuit, the one at the top of the page K561LA7. It is shown schematically that it consists of 4 elements, only they are in one body. The numbers 1,2,3...13,14 correspond to the pins of the microcircuit.
- Answer
#10 den556655 Guests 19 October 2015 22:17
0

What diodes are better to use????????
- Answer