Comments on: Laser Security System https://electrosome.com/laser-security-system/ You Inspire.....We Create..... Fri, 08 Sep 2017 08:42:00 +0000 hourly 1 https://wordpress.org/?v=6.1.1 By: rutagengwa eyal https://electrosome.com/laser-security-system/#comments/6869 Fri, 08 Sep 2017 08:42:00 +0000 https://electrosome.com/?p=3241#comment-6869 In reply to rutagengwa eyal.

i have copied your circuit but it is not running what might be the problem

]]> By: rutagengwa eyal https://electrosome.com/laser-security-system/#comments/6868 Thu, 07 Sep 2017 08:38:00 +0000 https://electrosome.com/?p=3241#comment-6868 how much time will the buzzer buzz if someone interrupt the laser,and if the circuit will run if the 47k is replaced by 2.2k resistor with 9volts supply plz answer me?

]]> By: rutagengwa eyal https://electrosome.com/laser-security-system/#comments/6867 Thu, 07 Sep 2017 07:49:00 +0000 https://electrosome.com/?p=3241#comment-6867 how much time will the buzzer buzz?? and if the 47k resistor is changed by 2.2k will the circuit run!? plz answer me

]]> By: Adam Ubaid https://electrosome.com/laser-security-system/#comments/6799 Mon, 12 Jun 2017 09:44:00 +0000 https://electrosome.com/?p=3241#comment-6799 Sir..
Mein ADC k through leds control krna chahta hn…I am using mikro c
And pic16f877a
Plz help mee

]]> By: rhenryan https://electrosome.com/laser-security-system/#comments/6631 Wed, 01 Feb 2017 06:31:00 +0000 https://electrosome.com/?p=3241#comment-6631 how long is the maximum length between the laser and the LDR?

]]> By: Ligo George https://electrosome.com/laser-security-system/#comments/6577 Sat, 17 Dec 2016 09:44:00 +0000 https://electrosome.com/?p=3241#comment-6577 In reply to Muhammad Salman.

Adjust the sensitivity using the variable resistor.

]]> By: Muhammad Salman https://electrosome.com/laser-security-system/#comments/6569 Sat, 17 Dec 2016 05:52:00 +0000 https://electrosome.com/?p=3241#comment-6569 In reply to Ligo George.

I am Doing it with 3v Battery , whenEver i connect battery it starts buzzing continuously , y it is happening?? and one thing is more, i have used 2.2k resistor instead of 47k b/w Op-amp and Npn transistor ….???
my Project is on this coming Monday plz help me out..

]]> By: sarthak roy https://electrosome.com/laser-security-system/#comments/6085 Mon, 23 May 2016 07:41:00 +0000 https://electrosome.com/?p=3241#comment-6085 can you explain me this circuit of laser light alarm

]]> By: Ligo George https://electrosome.com/laser-security-system/#comments/5718 Wed, 30 Dec 2015 03:00:00 +0000 https://electrosome.com/?p=3241#comment-5718 In reply to Hamza Ghani.

You can also use without opamp, but the LDR resistance will vary a lot. So if you need to adjust the sensitivity, it is better to use a comparator.

]]> By: Hamza Ghani https://electrosome.com/laser-security-system/#comments/5700 Sat, 19 Dec 2015 16:27:00 +0000 https://electrosome.com/?p=3241#comment-5700 What’s wrong if OP Amp is not used I didnt used OP Amp and took trigger input from emitter

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