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led is used to determine Plancks constant
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What element from the periodic table is used to make pencils?
Pencils are filled with Graphite, they used to be filled with led but since led is Poisonous they replaced the led with graphite.
What was Cavendishs contribution to Newtons Law of Gravitation?
Cavendish's famous experiment led to a measured value for G, the universal constant of gravity.
What is a alloy of tin and led?
solder is an alloy of tin and led used for fixing some joints
Can T8 LED tube light be used with ballast and can ballast be removed and will it work?
A T8 LED tube has to be used with a ballast to bring the correct voltage to the tube for it to operate correctly. Removing the ballast from the circuit will prevent the tube from operating.
How does an 120VAC LED light bulb work?
LED's (Light Emitting Diodes) work on DC current, not AC, so the AC needs to be stepped down to an appropriate voltage via a transformer (probably only a few volts), converted to DC via a rectifier and filter (to smooth out the ripple current). there are a constant driver in side the 120V AC led light bulb , this driver transfer the AC to DC, so the led could work with DC.
How two determine anode for LED?
If it's a thru-hole LED, the anode is the longer pin. If it's a used part and part had its pins cut off, the larger electrode inside is the cathode.
A sentence with the word constant?
Example sentence - His constant inability to give his children a consequence for their bad behavior led to the demise of our relationship.
Why the small wavelength is used in LED?
Small wavelength used in led bcoz we commonly use led as a flashlight.
What led to the exposure of stone mountain?
Centuries of constant erosion (heavy rains, winds, etc) -Harold
What is the masculine of led?
The word led doesn't have a gender. It is led no matter how it is used.
Where are LED spotlights normally used?
LED spotlights are usually used outdoors. LED spotlights are usually used to light up porches and yards. LED spotlights are also used in Art Galleries to light up showcase displays.
How do you wire a 2V LED to run on 12V?
Light Emitting Diodes (LED) solid state devices are current dependant. LED have ratings for the max current allowed to the LED device. A typical current allowed to a LED is 20ma. Ohms Law is used to determine the resistance required to limit the current to your desired current. The formula is used in this manner: E=12VOLTS the desired current is I = 20ma. R = E/I = 600 ohms. Where E=2 volts dc and I=20ma R= E/I = 100 Ohms.
Components used to protect a LED?
The component used to protect a LED from burning up is called a resistor.
Is led used in pencils?
No, graphite is used
What is difference between led drivers and led smps?
The two are both power supplies. SMPS stand for "switch mode power supply" and uses high frequency switching to convert the incoming supply voltage to a controlled output. Normally, the input is AC mains and the output is DC voltage at 5V, 12V or 24V for example. SMPS is a very efficient way of generating regulated DC voltages. They can also be designed to deliver constant current as well as constant voltage and some cane be used as an LED driver. An LED driver delivers current to an LED within the safe operating range of the LED. It can deliver a constant current or it can switch the current on and off at a high frequency to control the level of illumination. The driver is sometimes a switch mode power supply because in some cases, it uses switch mode techniques to control the output. A range of LED drivers and LED power supplies can be viewed on the PowerPax UK website. They are one of the largest power conversion specialists in Europe and offer a warranty of up to years
Why the led check antilock is always on in '92 Cherokee?
Bring to a shop that has an ABS scanner to determine the problem
What element from the periodic table is used to make pencils?
Pencils are filled with Graphite, they used to be filled with led but since led is Poisonous they replaced the led with graphite.
