Need a diagram to run 40 green leds and 40 red leds off a 9 volt battery on a switch
Joecoolvette had a very detailed answer and I did like it however to run this many lights off of a 9volt isn’t very realistic or for a very long period of time. I recommend staying use and length of time as well as draw of led or model of bulb as this can also have effect of time that they stay light
there is no answer to this question, at all, due to the OP and you never told the LED makers name and its real part numbers, (hint vast LED types exit, not just 1 )
the battery will go dead fast, so this is just toy project or is for fooling around. sure.
yes the answer is a serial + parallel wiring scheme it must be.
80 LED will not work at all with 9volts wired in series
80 LED will not work right with all 80 in parallel as that will make the battery see 16amps of current killing the battery dead in 1 second flat.
you need series parallel circuit and series resistor (or CCS constant current source)
lets say the LED are 2volt LED Vf=2v
so that is 4 led in series TIMES 20 of those in parallel. for 80 total
you need to limit. current to 20x 20mA. or 1/2 amp total or 20mA per series set. how you do that is your call.
about 50 ohms per series set. 40 resistors. total. 8v to led 1vdc across the resistor each.
again no LED told at all , so proper Vf and I max is not know, lacking that.
NO LED told
ALEX I'd like to try topic " What's my LED "at $500 please? Jeopardy! (RIP Alex !)
all the above is only for 1 random LED type, what you in your hand noBODY CAN GUESS.
there are simple LED, that we have used since the 1970s
and now BRIGHT WHITE (or other colors) LED,
they are not the same.
ponder this huge seller (my favorite site)
https://www.mouser.com/Optoelectronics/L...
161,000 typeshttps://www.mouser.com/Search/Refine?Key...
now standard + through-hold (axial leads)
my guess standard LED (is wanted so the battery might last a day?0
https://www.mouser.com/Optoelectronics/L...
see Vf there, see the vast ranges of Vf, (see why I asked this first?)
the old days of 1970 simple are gone. ponder those page first.
falling star
the OP never told the APPLICATION (use) at all nor one CLUE so that to makes this question he asked useless.
what if he said the application was to make LED glow for only 15min. in a school science demonstration.
after all Applications are INFINITE. that be a fact.
if he wanted longer run times we can in fact modulate the LED. like we do in LED clocks
for vastly longer run times.
nor did he say using it in the day or night, (brightness matters) or indoors or out.
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There is good news and bad news concerning for this LED light.
The good news is UP 50% OFF Osslove LED light on November 30, 2021.
The bad news is that it cost $29.95.
https://www.osslove.com/OSSLOVE-Led-Lights-DIY-Mode-Color-Changing-LED-Light-Strips-32-8ft-for-Bedroom-p1177815.html
I purchased about a dozen of these lights in 2016 and have had them in storage since.
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
no LED maker and p/n told so there is no answer
there are 160,000 LED types. and more.
so there is no answer.
learn to use a schematic and avoid the 10000 words.
and a BOM
bill of materials ,that the OP failed hard not telling LED p/n at all.
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SOURCE: need wiring diagram for ms-7142 motherboard
The connector bus where the front wire connections go, is usually marked. It's usually two rows of pins sticking up. You should be able to determine where the power wires connect. One pin will say PWR. The second pin you need is either next to, or across from that pin. The LED pins are labled too. Keep in mind that LED's have polarity. That is, a diode [light emitting DIODE- LED] only works one way. It's a one way "Valve" for electricity. So if you determine which two pins are for the power light and you connect them, it still may not work. Just reverse the two wires to the two pins and it should work.
I can't imagine that the MSI web site doesn't have the pinout for this board. It would be worth a look if you're not sure of what I'm saying here.
SOURCE: CASE WIRES TO PANEL1 CONNECTIONS
The hdd red wire gooes to pin #1 the hdd white wire goes to pin #3 the power sw orange wire goes to pin #6 the power sw white wire goes to pin #8 The reset sw blue wire goes to pin #7 the reset sw white wire goes to pin #5 the power led green wire goes to pin #2 the power led white wire goes to pin #4.
Now the layout of the pins is the long row (5) pins are the odd number pins 9 being the odd one and 1 is the other end of the row. 2 through 8 start at the pin accross from 1 : : : : . I hope this helps you.
SOURCE: wiring diagram
might be this one: ftp://download.intel.com/support/motherboards/desktop/se440bx2/72163201.pdf
SOURCE: I NEED THE PIN OUT DIAGRAMS FOR K9N6PGM2-V MOTHERBOARD
Hi, here's the link for the manual, with the pinout diagrams:
http://global.msi.com.tw/index.php?func=downloadfile&dno=6801&type=manual
Please rate if you find this helpful :)
SOURCE: wiring info
Lay out is screened on the Motherboard above the Battery
HD Led pinss 1-3
Pwr Led pins 2-4
Reset pins 5-7
Power On pins 6-8
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Usually answered in minutes!
tell LED P/N# first and tell (use, what purpose or application) 15 minutes of fame or?
hopeless lacking all that. and more. (nor run time)
I can guess 100,000 times what LED you have but I'd be wrong 99,999 times. sad no?
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