Light Dependent Resistor Circuit Symbol

Here automatic night lamp circuit using ldr is given.

Light dependent resistor circuit symbol. Here is the schematic for the circuit. A light dependent resistor ldr also known as a photoresistor is a device whose resistivity is a function of the incident electromagnetic radiation. What is an ldr light dependent resistor. In other words it exhibits photoconductivity.

This allows them to be used in light sensing circuits. Electrical circuit symbols symbols. The main application of the light dependent resistor ldr is it is used as a variable resistor in the electronic circuits. The circuit symbol which is used for the photoresistor or the light dependent resistor is a combination of the resistor animated to indicate that the photoresistor is light sensitive in nature.

Here advantages and disadvantages of ldr are given. A light dependent resistor aka ldr photoconductor photoresistor or photocell is a component used commonly in electronics which has a resistance which decreases as the intensity of the light hitting its surface increases and visa versa a typical light dependent resistor is pictured above together with on the right hand side its circuit diagram symbol. It is basically a photocell that works on the principle of photoconductivity. Light dependent resistor ldr the resistance of a ldr depends on light intensity.

Light dependent resistors ldr are also called photoresistors. A light dependent resistor ldr is also called a photoresistor or a cadmium sulfide cds cell. Hence they are light sensitive devices. The light dependent resistor photoresistor circuit symbols are shown for both the newer style resistor symbol i e.

They are made of high resistance semiconductor material. It is also called a photoconductor. At low light levels the ldr has a high resistance. Photoresistor light dependent resistor circuit symbols.

The basic symbol of the light dependent resistor consists of a rectangle which symbolizes the resistor s function of the ldr. How an ldr works. Other applications of ldr are light sensor relays fire alarm etc. This makes them jump into the conductive band and thereby conduct electricity.

When light hits the device the photons give electrons energy. A rectangular box and the older zig zag line resistor circuit symbols. A typical ldr ldr circuit symbol variation in resistance with changing light intensity typical ldr.