Comments on: Photocell based night light

By: shrikant

shrikant — Fri, 03 Feb 2012 17:09:00 +0000

what is orp12. for the 9v to IC is it necessary to design power supply.

By: sruthy suresh

sruthy suresh — Sat, 14 Jan 2012 19:56:47 +0000

sir, could you send some major applications of over light detector?

By: Unicorn

Unicorn — Mon, 19 Sep 2011 13:02:28 +0000

Hi all,

1) all those asking for the working of the above project plz refer to the theory of op-amp as comparator.

2) the circuit needs to be calibrated using the potentiometer for different LDR(Light dependent resistor)/(photocells), because all have different ranges for resistance values.

3)the 12V battery suggestion above is very useful and people should use only that for a good working of such a circuit.

for Mr. V.Rojekar if u r still in need of such a circuit please mention the specifications of the battery.

Unicorn

By: Hardik

Hardik — Sun, 07 Aug 2011 13:30:28 +0000

Sir,

Can u able to send me the working principle of photocell based night light.

and send me the website in which it shows how its working.

By: shahid

shahid — Thu, 09 Jun 2011 19:29:01 +0000

i need a c code for atmega16 microcontroller.the problem statement is that we have 8 lights in the surrounding of a building 4 of them are on continuously and remaining will be on if some person comes on that side of the light and after sometime that light will be off.please send me code for this anyone.

By: V.A. Rojekar

V.A. Rojekar — Sat, 28 May 2011 11:03:34 +0000

Dear Sir
Pl give us Railway Coach Battery Charging Circuits. Battery Sizes and Specification. Name of Supplier Companies, etc.

V Rojekar

By: Controlador de temperaturancon rago de 35 grados hasta 45 grados

Controlador de temperaturancon rago de 35 grados hasta 45 grados — Sat, 26 Mar 2011 00:55:15 +0000

Need to build a temperature controller that is 35 degrees celcius to 40 celciusm these to control the temperature of an incubator for chickens, I would like if u can supply the graphics for that and the list of components

By: seetharaman

seetharaman — Mon, 13 Sep 2010 18:12:42 +0000

Hi Haleem the same design can be used you have to replace the relay only with 5 volt one. it will work with 5 volt supply, without any other change to the circuit.

By: Haleem

Haleem — Mon, 13 Sep 2010 02:40:42 +0000

Hi
Need 741 based dark/light switch circuit but using +5V design. I would thankful for your earliest reply.

By: anirudh

anirudh — Tue, 06 Jul 2010 08:24:27 +0000

I am in need of a electronics based miniproject… can u send me any links.please help me.

Read more: http://www.circuitstoday.com/photocell-based-night-light#ixzz0stCEz7oj
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