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LDRs are normally found in Light/Dark sensing circuits
Greyson Swaniawski
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What is the purpose of LDR on a circuit?
158980
CAN LDRs be connected in parallel?
yes the ldr can be connected in a paralell circuit as i have done a experiment about te ldrs
What is the difference between LDR and LED?
An LED is an electircal component which converts electrical energy into light energy whereas an LDR uses light to complete the circuit and maintain the flow of current.
Explain the working of LDR and mention any five applications of LDR in detail?
A photoresistor, light dependent resistor (LDR) or cadmium sulfide (CdS) cell is a resistor whose resistancedecreases with increasing incident light intensity. It can also be referred to as a photoconductor.Applications:camera light meters, street lights, clock radios, alarms, and outdoor clocks
Which material is used in LDR?
Cadmium Sulphide (CdS), Cadmium Selenide (CdSe), Selenium, etc.
What type of circuit normally contains a LDR?
LDRs are normally found in Light/Dark sensing circuits
What is the purpose of LDR on a circuit?
158980
It is the ldr is type of resistor?
No i dont think so!
What is the type of ldr commonly used in schools?
automatic
CAN LDRs be connected in parallel?
yes the ldr can be connected in a paralell circuit as i have done a experiment about te ldrs
What is the difference between LDR and LED?
An LED is an electircal component which converts electrical energy into light energy whereas an LDR uses light to complete the circuit and maintain the flow of current.
What is the principle of operation of LDR?
Working of light dependent resistor This circuit explains the principle of operation of LDR (light dependence resistor). The circuit has various applications like shadow alarm, automatic night/morning lamp. LDR, an acronym for light dependent resistor is a resistor whose resistance is dependent on light. The resistance of LDR is of the order of Mega Ohms in the absence of light and reduces to a few ohms in presence of light. In this circuit when the light falls on LDR, the resistance of LDR becomes low and the entire voltage drop takes place across the variable resistance VR1 (10K). As a result the base of transistor (T1) gets high input and it gets biased thereby glowing the LED. When no light falls on LDR, the resistance of LDR becomes high so almost entire voltage drop takes place across it and the base of transistor is at low potential. So transistor does not gets biased nor it becomes conducting, hence switching off the LED. The sensitivity of the circuit can be adjusted by varying the preset VR1. LDR, an acronym for light dependent resistor is a resistor whose resistance is dependent on light. The resistance of LDR is of the order of Mega Ohms in the absence of light and reduces to a few ohms in presence of light. In this circuit when the light falls on LDR, the resistance of LDR becomes low and the entire voltage drop takes place across the variable resistance VR1 (10K). As a result the base of transistor (T1) gets high input and it gets biased thereby glowing the LED. When no light falls on LDR, the resistance of LDR becomes high so almost entire voltage drop takes place across it and the base of transistor is at low potential. So transistor does not gets biased nor it becomes conducting, hence switching off the LED. The sensitivity of the circuit can be adjusted by varying the preset VR1.
What type of LDR commonly used in schools?
Basically, ETC
What is the symbol for ldr?
this is the symbol for ldr
What is an LDR symbol?
An LDR is a Light dependent resistor.
What is the meaning of LDR?
LDR refers to Light Dependent Resistor.
What does an LDR do in a circuit?
An LDR is a 'light-dependant resistor'. It's one of the devices sometimes called "photocells", but the LDR doesn't generate anything. It only changes resistance depending on the intensity and wavelength of the illumination falling on it. The simplest application would be in a circuit that switches something on or off to correspond with daylight and darkness. Somewhat fancier applications might include ... -- monitor a light beam across the door of a store, to ring a bell when a customer walks in; -- detect the audio carried on an amplitude-modulated light beam.
