Dependent Resistor
2008
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 100 Photodetector light dependent resistor 5516 5 10koh $9.99 Time Remaining: 26d 22h 7m Buy It Now for only: $9.99 |
 20 Photodetector light dependent resistor 5537 5 mm $6.75 Time Remaining: 25d 19h 59m Buy It Now for only: $6.75 |
 100 Photodetector light dependent resistor 5528 10k 20k $9.95 Time Remaining: 23d 7h 16m Buy It Now for only: $9.95 |
 20PCS Photodetector light dependent resistor 5506 5mm $6.75 Time Remaining: 25d 19h 59m Buy It Now for only: $6.75 |
 20PCS Photodetector light dependent resistor 5549 5mm $6.75 Time Remaining: 25d 21h 34m Buy It Now for only: $6.75 |
 100pc Photodetectors Miniature light dependent resistor $9.99 Time Remaining: 29d 8h 19m Buy It Now for only: $9.99 |
 100 Photodetector light dependent resistor 5549 100k200 $14.99 Time Remaining: 12d 23h 16m Buy It Now for only: $14.99 |
 20PCS Photodetector light dependent resistor 5539 5mm $6.75 Time Remaining: 25d 21h 34m Buy It Now for only: $6.75 |
 5pcs Photodetector light dependent resistor 12528 12 mm $9.95 Time Remaining: 21d 6h 59m Buy It Now for only: $9.95 |
Dependent Resistor
Troubleshooting Tips for Solar Lighting
Purchasing solar lights, whether that is: solar address lights, solar chimes, or solar accent lights, is not only a sound investment because they are environmentally friendly – but solar lights are very durable and require little maintenance. However, solar lights are not completely impervious to accidents, especially when these lights are outdoors. Luckily, a majority of the time, it's a very simple fix. Here's a short guide for problems you might face with your solar lights:
"The light is very dim (or might not turn on at all), what's going on?"
The most important thing to consider with your solar lights is where to place them. If, after one day, your solar light doesn't work: don't panic! Did you place the light under a big tree? Is the light hiding in the shade for half the day? If your solar light does not receive proper lighting, it cannot perform to its full capacity. Move the light around to different locations around your home before assuming its broken. Also, it might be as simple as tilting the PV cells (your light meter) more towards the sun. Now, if you've owned the light for a long period of time, its probably time to check the battery.
"The light turns on during the day, and off at night. Should I move to Australia?
Well, that's always an option, but don't let your solar lights dictate that. Typically, when this occurs, it is because dirt or some other grime has interfered with the LDR (Light Dependent Resistor). If this is the case, you will need to take the light apart so you can clean and dry the LDR. See if this works first. If there are still issues, you might need to replace the part, but don't worry, you can purchase it at local hardware stores, and its relatively inexpensive.
"Okay, I did what you said… it still doesn't work. Now what?"
There's a good chance the LED bulb is broken. LED lights have long life spans, but will eventually corrode and break. The metallic leads at the end of the bulbs are very fragile, and once they break, you will need to replace the light. Make sure you know the warranty on the lights you purchased to see if you could get them replaced. Otherwise, you will need to go to your local hardware store to purchase a new light.
About the Author
Tom Jorgensen is a green-living enthusiast and a member of Windrunner Solar
can anyone help withe writing the plan for testing a light using a light dependent resistor?
plan for testing a light using a light dependent resistor
physics coursework
I would suggest using a potential divider circuit.
Put a resistor in series with a cell and the LDR now put a voltmeter in parrallel with the LDR. The voltage across the LDR, V1, is linked with the cell EMF, V,link so:
V1/V=R1/R
where R1 is the resistance of the LDR and R is the resistance of the resistor. This system has many advantages( Read http://en.wikipedia.org/wiki/Voltage_divider).
In the plan you might want to talk about how light strength varies over distance, this would let you. But to give you more info you need to give us ore about what you ar einvestigating
Day / Night Sensor Circuit - Easy and Simple (LDR - Light Dependent Resistor)
