Tip & How-To about Cell Phones

Led solar cell charger.

1.led creates current from a sun light .
2.get 30 led's.
3.connect them ina parallel .
4.keep all +at one joint and all - at another joint
5.connect this to point where battery terminal.meets the cell.
6.keep in solar light .

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someone please help me figure out why my elemnt t.v all of a sudden does not have no picture?


There are many reasons behind this problem. Here are some common issues about this problem.
  1. Missing LED's Connection from PCB.
  2. Burning LED's (Back light)
  3. No current on back lights.
  4. See in sun shine or torch light, If display show and lights are faulted. Contact to repairing lab.

May 11, 2014 | Element ELC-HS321 32 in. LCD TV

1 Answer

I need a simple wiring diagram to turn on 40 red leds and 40 green leds on a 9volt battery


Two ways to do it..........

One is a Series circuit, the other is a Parallel circuit.

Of course you can also use a Series/Parallel circuit.

Each LED has a Positive ( + ) connection, and a Negative ( - ) connection.

A) Series circuit:

One side of Switch is connected to Positive ( + ) of the Battery.
The other side goes to the Positive ( + ) of the first LED light.

Then the LED's are connected together in a Series.

Negative of first LED light to Positive of second LED light.
Negative of second LED light to Positive of third LED light.
Negative of third LED light to Positive of Fourth LED light.

And so on, and so on, until you come to No.40 LED light.
It's Negative connects to the Battery.

ONE LED goes bad, and none of them will work.
Old Christmas light strings are set up this way.

B) Parallel Circuit:

Switch to Battery - Positive ( + )
Wire goes from Switch, to 1st LED light's Positive connection ( + )
Then wire from 1st LED positive, to 2nd LED Positive ( + )
Then wire from 2nd LED Positive to 3rd LED Positive.

And so on, and so on, until you reach the 40th LED.

Then wire comes from Negative ( - ) of Battery, to Negative of 1st LED.
Wire from 1st LED to Negative of 2nd LED.
Wire from 2nd LED to Negative of 3rd LED.
Wire from 3rd LED to Negative of 4th LED.

And so on, and so on, until you reach 40th LED.
Wire connects to Negative of 40th LED. Then a wire connects from 40th LED Negative, and goes to Negative of Battery.

http://en.wikipedia.org/wiki/Series_and_parallel_circuits

Series Circuit;

http://en.wikipedia.org/wiki/File:Series_circuit.svg

Over to the Left side you see the Battery symbol. There is no switch in this circuit.

In the Battery symbol, the Longer line represents the Positive pole.
(Positive connection)

Resistors are represented by the squiggly lines. In place of them put your LED lights.

A Switch would go in-between the Battery, and first LED light; on the Positive side.
(ALWAYS put the Switch on the Positive side. Can explain in detail if you need)

[The Top line in the diagram, is the Positive 'wire' ]

http://www.autoshop101.com/trainmodules/elec_circuits/circ114.html

Parallel Circuit:

http://www.autoshop101.com/trainmodules/elec_circuits/circ122.html

In a Parallel circuit, if one LED light goes out, the rest stay on.

For additional questions please post in a Comment.
Regards,
joecoolvette

Apr 12, 2013 | Computers & Internet

1 Answer

.new acerpsweo laptop r cord butit does not charge laptop and go ina second how can a fix it how can i downlod my files?


When you connect the power adapter into the laptop, does the power LED light up? If not then - The battery adapter or the adapter's power lead or the laptop's power socket could be faulty. Check power adapter's DC plug that connects into the laptop power socket with a multi-meter, the voltage should be slightly higher than the voltage that is printed on the label on the bottom of the adapter. If the voltage is zero or way below the voltage that is printed on the label then the power adapter is faulty and needs to be replaced. If the adapter is OK then connect it to the laptop and power it up, then look at the power/battery charging LED light and wriggle the power plug in the laptop's power socket. If the power/battery LED light flashes and in a certain position this LED light stays firm, then the power socket is either faulty or it has a dry solder joint where it is connected to the motherboard. This can be repaired but it requires the laptop to be completely dismantled to get at this power socket and repair. If you cannot DIY then I suggest you get a quote first.

Feb 02, 2013 | Gateway Computers & Internet

1 Answer

It blinks orange


The information below (could not copy illustrations) is available from:

http://support.lexmark.com/index?locale=en&page=product&productCode=LEXMARK_X4650&segment=SUPPORT&userlocale=EN_UK&frompage=null#1

I did a searcfh for 'blinking orange light' in the Got a Question field.


The Wi-Fi indicator light gives information about the status of the printer.
NOTE: Most wireless communication issues are a result of the following:
  • RF interference or wireless signal quality.
  • System of software firewall applications blocking crucial Lexmark software and ports.
  • The router has been reset. A different or new SSID(network name) and passphrase on the router creates a mismatch to those originally configured on the printer. You will need these router settings to reconfigure the printer using the included Setup Utility or Setup Assistant.
  • The printer has been turned OFF for period.
Use the table below to help determine your printer's current status, and refer to the linked articles for additional assistance.


Wi-Fi Indicator Possible communication states
Related Links
Important! This article was disigned for previous generations of Wireless-equipped inkjet printers. Not all article links are current, but they may still provide useful guidance.
pattlnk_4182007_1317-blkmedallion.gif
Off
"I have no wireless capabilities."


  • Initial power-up state.
  • The INA* is not present.
  • The INA is not properly connected
  • The printer power is off
  • Hardware failure
  • USB connection with printer that lacks wireless print server.
Contact Lexmark if this remains a problem. See Still need help? below. pattlnk_4182007_1318-aniorange.gif
Blinking orange
"Printer is trying to connect wirelessly"

  • The INA has been configured for infrastructure, but is not linked to an access point
  • There is a security setting mismatch between access point and router.
  • Interim negotiating status while performing setup procedure.
  • Out of range or interference between printer and access point.
  • Printer unplugged for an extended period of time may cause this to happen.


Click here for 'Printer Not Found or here for an alternative article on 'No communication' issues.
Click here for an article on Signal Strength. NOTE: This article pertains to the X3500-X4500 Series printers but it is valuable for ALL wireless products.
If you are really unsure what has happened:

  • Make sure the computer is communicating over the network.

  • Reset your wireless router (AP) by turning it OFF and ON or
    remove the power supply from the back of the printer and then plug it back in.

  • Follow this link to the Wireless Setup Utility or Wireless Configuraton Utilty to reconfigure the printer.
pattlnk_4182007_1319-orgmedallion.gif
Solid orange
"Printer is not communicating wirelessly"
  • The printer is brand new and has never been configured.
  • The printer is connected via USB cable.
  • The printer is in the middle of being configured.
  • The INA is waiting for an ad-hoc (peer-to-peer*) connection.
* Computer to printer communication without the use of a router.
Need to configure:
Windows XP/Vista
NOTE: These are examples only.
Infrastructure (most common) Click here. Ad hoc Click here.
All-In-Ones (AIOs), also known as MultiFunction Printers (MFPs):
Infrastructure Click here. Ad hoc Click here.
Windows users: The light will not turn green until after you have removed the installation cable!
Macintosh X.3 and X.4

Infrastructure (most common) Click here. Ad hoc Click here.
AIOs (MFPs)
Infrastructure Click here. Ad hoc Click here. pattlnk_4182007_1320-grnmedallion.gif
Solid green
"Printer is connected wirelessly"

  • The INA has been configured and is connected to an access point.
  • The INA is connected ad hoc.



  • For a 'Communication error' with a green light, click here.

  • For a 'Communication error' only after the printer comes out of power saver , follow the below links:

X4800 Series - click here.
X6500 Series - click here.
X7500 Series - click here.

pattlnk_4182007_1321-anigreen2.gif
Blinking green Printer will flash green during a code update. Click here for an article describing how to update network firmware. Or, click here for further firmware code update information.
NOTE: This indicator should not be seen often.

INA = Internal Network Adapter


Trust this is helpful. Note you can download updated drivers and use the Wireless Troubleshooting Guide from this site.

Please vote. :)






Dec 12, 2010 | Lexmark X4650 InkJet Printer

1 Answer

I upgraded the taillights in my 2005 Chrysler 300 from standard to LED, but now the turn signals flashes fast..and I sometime hear a bell sound (as if door of something is not secured) when driving. Is there a heavy duty IMP or FCM for this vehicle? If so, where would you recommend I look? The dealer said they can only provide the OEM replacement.


Put the Original Tail Lights back in the Vehicle. Unless you are a qualified Electrical or Electronic Engineer that can calculate the required resistance that must be added to the circuit to bring the Current back up to what the Light Bulbs draw, you are not going to get it to work properly. The LED lights probably draw about 1/10 the current that the Light Bulbs draw or less. This is why the Flash Rate is so high. You will have to Measure the Current for Both the Bulbs and the LED's then determine what parallel resistance is required to come very close to the Bulbs current. Probably somewhere close to within 10ma of what the Bulbs draw. If you have a VOM meter you can measure the current. A Resistor would have to be added in Parallel with the LED's of sufficient wattage rating to bring the Current Back up to what the Bulbs draw.

Ohms Law E=IR
E=Voltage
I=Current
R=Resistance

To solve for I divide E/R
To Solve for R divide E/I

Good luck!

Dec 07, 2009 | 2005 Chrysler 300

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