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They are just very small bulbs, or incandescent lamps as us Electronic Engineers like to call them. Bulbs are plated in gardens....What are grain of wheat bulbs please? How do they differ from LED's?
SW
The name comes from the shape and size - usually a slightly smaller diameter than most common LEDs, can be bought quite cheaply pre-wired, but tend to only give you a nice warm yellowy light - more representative of a 1:1 electric lamp or loco light - but as with any traditional incandescent lamp, will absorb more power. A string of LEDs on a PP3 battery should last many hours before you need to change the battery. In fact I would go so far as to suggest that a string of LEDs would be better with a traditional PP3 than with a re-chargeable one.OK, thanks to those contributors and I'm more knowledgeable about LED's and have had one light up.
What are grain of wheat bulbs please? How do they differ from LED's?
SW
Only one LED will light, or the other - depends which way round you have the polarity.And when fed with DC?[ inverse parallel LED arrangement... AC etc....
Thank you Greg, that’s very useful. I’m grateful.No, and most solar units you find will probably have a charging system set up for a 12v battery.
The cool thing is you can calculate wattage and amp hours, and so you can size your panel.
You should be able to run 3 LEDs in series off 12v, so 12 volts at maybe 10 milliamps per "string" of 3 LEDs.
So wattage is volts times amps or 12 x .010 or .12 watts per set of 3.
So figure out the lights you need, add the watts up and then look for a solar panel that can generate that, and then get a large enough battery to run at night that can be charge fully in the shortest days.
That would be my advice.
Greg
With a surname of 'Watts', I was once told that .........No, and most solar units you find will probably have a charging system set up for a 12v battery.
The cool thing is you can calculate wattage and amp hours, and so you can size your panel.
You should be able to run 3 LEDs in series off 12v, so 12 volts at maybe 10 milliamps per "string" of 3 LEDs.
So wattage is volts times amps or 12 x .010 or .12 watts per set of 3.
So figure out the lights you need, add the watts up and then look for a solar panel that can generate that, and then get a large enough battery to run at night that can be charge fully in the shortest days.
That would be my advice.
Greg