Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > Electrical

CLICK HERE AND JOIN OUR COMMUNITY TODAY...IT'S FREE!

Reply
 
Thread Tools Search this Thread Display Modes
Old 08-10-2009, 02:14 PM   #1
DIY Hack
 
Mr Chips's Avatar
 
Join Date: Mar 2008
Location: Location, Location
Posts: 1,302
Rewards Points: 0
Share |
Default

12 volt photocells


Does anyone know of a source for an inexpensive 12v photocell

i want to set up some of the 12v outside lights so they come on automatically at night, and won't come on during day, but can't find anything in a stand alone photocell for under $80, which is 10x more than the ones for 120v

it's hard to believe they actually cost this much, since any solar light you buy for $10 -$50 usually has this built in

Mr Chips is offline   Reply With Quote
Old 08-10-2009, 02:32 PM   #2
Member
 
300zx's Avatar
 
Join Date: May 2009
Location: Florida
Posts: 630
Rewards Points: 0
Post

12 volt photocells


http://www.nextag.com/12-volt-60-wat...er/search-html http://www.homegardenandpatio.com/ca...s_lights_porch

300zx is offline   Reply With Quote
Old 08-10-2009, 02:38 PM   #3
DIY Hack
 
Mr Chips's Avatar
 
Join Date: Mar 2008
Location: Location, Location
Posts: 1,302
Rewards Points: 0
Default

12 volt photocells


that looks like it plugs into 120v and steps down to 12v.
i am doing a solar system and don't want to use inverter. i want something that would wire straight into 12v
Mr Chips is offline   Reply With Quote
Old 08-10-2009, 03:48 PM   #4
Semi-Pro Electro-Geek
 
Join Date: Jul 2009
Location: Arizona, USA
Posts: 2,550
Rewards Points: 0
Default

12 volt photocells


Quote:
Originally Posted by Mr Chips View Post
that looks like it plugs into 120v and steps down to 12v.
i am doing a solar system and don't want to use inverter. i want something that would wire straight into 12v
Most of the manufacturers of small solar charging controllers have models that provide automatic light switching, too. For example, the Morningstar charge controllers are available with a lighting control option. These units are not dirt cheap, but not much more expensive than a plain charge controller, which you need anyways. Just search for "solar light controller" and you'll find loads of options.
mpoulton is offline   Reply With Quote
Old 08-10-2009, 03:58 PM   #5
Member
 
300zx's Avatar
 
Join Date: May 2009
Location: Florida
Posts: 630
Rewards Points: 0
Post

12 volt photocells


You could try this one.I would email him and make sure its not 12 volt http://cgi.ebay.com/Low-Voltage-Nigh...QQcmdZViewItem
300zx is offline   Reply With Quote
Old 08-10-2009, 03:59 PM   #6
Electrical Contractor
 
wirenut1110's Avatar
 
Join Date: Apr 2008
Location: Chester, VA.
Posts: 1,049
Rewards Points: 0
Send a message via AIM to wirenut1110
Default

12 volt photocells


12 volt photocell

Will this work for ya?
wirenut1110 is offline   Reply With Quote
Old 08-10-2009, 04:45 PM   #7
DIY Hack
 
Mr Chips's Avatar
 
Join Date: Mar 2008
Location: Location, Location
Posts: 1,302
Rewards Points: 0
Default

12 volt photocells


Quote:
Originally Posted by wirenut1110 View Post
12 volt photocell

Will this work for ya?

Yes, that's more like it. i was hoping to find something even cheaper, but that is a lot better than what i have seen before
Mr Chips is offline   Reply With Quote
Old 08-10-2009, 05:14 PM   #8
Member
 
Join Date: Jul 2008
Location: NW of D.C.
Posts: 5,990
Rewards Points: 0
Default

12 volt photocells


Quote:
Originally Posted by Mr Chips View Post
Yes, that's more like it. i was hoping to find something even cheaper, but that is a lot better than what i have seen before
It's the $37
or
$5 or $10 in parts including a CdS photocell and you assemble/test/debug from a design that's sure to work. I think the circuit comes with the Radio Shack datasheet included with their photocell. With this option you can hide most of the electronics (it's cosmetically pleasing).

The tradeoff that cannot be gotten around with either unit is that if you set the sensitivity so that it comes on later (darker) it will be sensitive to any passing light source.
And of course the controlled lights cannot be anywhere near the photocell or you will have an oscillating system.

Last edited by Yoyizit; 08-10-2009 at 05:35 PM.
Yoyizit is offline   Reply With Quote
Old 01-21-2010, 03:24 AM   #9
Newbie
 
Join Date: Jan 2010
Location: UK
Posts: 1
Rewards Points: 0
Default

12 volt photocells


I have found a company in the UK that make 12v DC Photocells and ship all over the world for just a few bucks. The unit price at the moment is about USD25.00. www.acetek.co.uk .
answers is offline   Reply With Quote
Old 01-21-2010, 04:35 PM   #10
Newbie
 
Join Date: Dec 2009
Posts: 16
Rewards Points: 0
Default

12 volt photocells


Quote:
Originally Posted by Mr Chips View Post
Does anyone know of a source for an inexpensive 12v photocell
Try looking for those "keep your car battery from dying" photocells. I bet Harbor Freight has something that could work for you for less than $10.

<My mistake. I thought you meant photovoltaic cells, aka "solar panels.">

Last edited by Wino; 01-21-2010 at 04:40 PM. Reason: lack of reading comprehension on my part
Wino is offline   Reply With Quote
Old 04-16-2010, 10:51 PM   #11
Newbie
 
Join Date: Apr 2010
Posts: 1
Rewards Points: 0
Default

12 volt photocells


I came across this forum while gooogling this particular topic. I joined up just so I could show you the best thing I've found...

http://cgi.ebay.com/ws/eBayISAPI.dll...m=110520652851

It's a light controlled 12v switch sold out of the UK for about $21 USD.

Of course, it's quite likely that as you read this thread, the eBay item will have expired. So here's how I found it: I tried a number of combinations of search terms, but the golden ticket was "12vdc automatic switch".

What I want to do is automate the headlights in my car. But I can't tell you (yet) whether this will help you or me.

Let me know if it works out, if you decide to try it.
zer024 is offline   Reply With Quote
Old 10-25-2010, 12:05 PM   #12
Newbie
 
Join Date: Oct 2010
Posts: 2
Rewards Points: 0
Default

12 volt photocells


Wouldn't it be possible to use one of the photocells out of a Harbor Freight yard light? I see they have three solar powered "Tiki lights" for $7. Each has a photocell in it. Voltage might be wrong, but that should be fixable with a resistor in the circuit.
Goomer is offline   Reply With Quote
Old 03-24-2012, 10:22 PM   #13
Newbie
 
Join Date: Mar 2012
Posts: 2
Rewards Points: 0
Default

12 volt photocells


It sounds like we are at the same stage of solar experimentation. Try a search for a photoresistor, the component that you may be looking for.
james1586 is offline   Reply With Quote
Old 03-24-2012, 11:57 PM   #14
Newbie
 
Join Date: Oct 2010
Posts: 2
Rewards Points: 0
Default

12 volt photocells


The solution to the problem was simple. I have an automatic chickenhouse door opener/closer that runs off 110 power. The system is 120 volt, and when there is a power loss, it causes all sorts of problems, including leaving the door open so the raccoons can get to the chickens. I was going to build an entirely new 12 volt system when I realized all I really wanted was a battery backup to the system. I took a Harbor Freight "12 Volt Jump Starter and Power Supply", plugged it into the existing 110 outlet to keep it charged. Off to the side of it I plugged in a Harbor Freight 80 Watt Continuous Power Inverter, then plugged the opener system (with 110 volt photocell) into that. So, the battery is continuously charged and the door operates off the power from the invertor. If power is lost, the door will operate for days from the power available from the battery. So, the need/search for the 12 volt photocell ended. Been working fine for over a year and through a couple power losses. Not the most efficient thing going, energy wise, but the power drawn is pretty minimal.
Goomer is offline   Reply With Quote
Old 03-25-2012, 12:30 AM   #15
Newbie
 
Join Date: Mar 2012
Posts: 2
Rewards Points: 0
Default

12 volt photocells


I'm happy that you found a solution. It sounds rather complex, but then I realized that each of the components could be used for other purposes if needed. It certainly fills the need you had. Good thinking.
I recently got into solar and electronics as a hobby and have just started my learning and development stage. I have just built 3 solar panels from scratch. They each should deliver 60 watts and I am exploring uses for them. I was able to acquire 2 200aH batteries for my experimentation, so I think that I am close to getting it all going. I am in the process of building my own charge controllers, but am hitting a snag with figuring out what to do with excess power.
Hate to write so much as a newb, but am hoping that I can attract some similar interest to help me along the way.

james1586 is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
220 volt circuit GFCI Captflx Electrical 16 09-29-2011 06:53 AM
How to power a 120/240 volt 3 phase oven in a building with 120/240 volt single phase wantsomegetsome Electrical 9 05-04-2009 10:49 AM
What switch to install between panel and 220 volt heater Rogers Guitar Electrical 4 01-21-2009 06:08 PM
hooking up dryer....bronx ny code SURFBUG Appliances 6 10-14-2008 09:41 PM
Different styles of 220 volt recepticles? MrLinux Electrical 8 01-24-2008 06:47 PM




Top of Page | View New Posts

Copyright © 2003-2014 Escalate Media. All Rights Reserved.