ORP12 Datasheet, ORP12 PDF. Datasheet search engine for Electronic Components and Semiconductors. ORP12 data sheet, alldatasheet, free, databook. ORP12 (Sealed Lens) ORP12 Light dependent resistor. Cadmium Data Sheet >, Download the Handbook for full specifications and applications . pF. Rise time 1. lux. -. – ms. 10 lux. -. – ms. Fall time 2. lux. -. 48 . – ms. 10 lux. -. – ms. Dimensions. Data pack F. Data Sheet.

Author: Fehn Arashile
Country: Gabon
Language: English (Spanish)
Genre: Education
Published (Last): 9 May 2011
Pages: 47
PDF File Size: 17.83 Mb
ePub File Size: 14.99 Mb
ISBN: 408-4-30595-736-6
Downloads: 32722
Price: Free* [*Free Regsitration Required]
Uploader: Mutaxe

It comes in a hermetic TO package.

As a orp12 datasheet rule-of-thumb, in dataeheet light its resistance is around 5. It has the same pinout and used for the same purpose. When this happens, orp12 datasheet voltage across the base and orp12 datasheet junctions of the transistor also increases, because the LDR is essentially connected across them A permanent circuit orp12 datasheet be built on PCB Prototype Matrix Board which you can get very cheaply from most electronics stores.

When in light, the light energy called photons, falls upon it and releases electrons. The preset is used to change the characteristics of the potential divider network.


In this circuit, we are using a transistor as a switchand prp12 ORP12 controls it. When you are constructing this, make sure you understand the pinout of the transistor. A light-dependent resistor LDR is a photo-conductive cell. In the dark, the material does not have enough electrons to conduct. If you were to look at it from underneath orp12 datasheet this is how the pins are organised.

As you can see, they are connected across the 9 V power supply.

Light Dependent Resistor (LDR)

When the voltage across the base rises orp12 datasheet a sufficient amount, the transistor will begin to conduct and therefore ddatasheet LED will light. Therefore, please consult the ORP12 datasheet. Even the Orp12 datasheet range of transistors would work in this circuit.

An equivalent transistor is the 2N with a slightly lower Ic rating of 0. These dataeheet then allow it conduct. When the orp12 datasheet level decreases, the LDR resistance increases, and the voltage across it also increases.

This is a very simple circuit and you can orp12 datasheet many different types of general purpose NPN transistors.

CdS is a material which in the dark becomes an insulator. Its orp12 datasheet in ohms changes in proportion to the amount of light falling upon it.


This in turn determines when the transistor will conduct. It has an Ic rating of 1 Orp12 datasheet and is capable of driving relay loads as well.

Light Dependent Resistor (LDR)

This is a very simple circuit that could be constructed on a modern Solderless breadboardor tag board, or even screw-down orp12 datasheet blocks. When the light level increases, the resistance of the LDR will fall and the voltage across it falls as well.

The precise amount can vary depending upon the manufacturer and the component orp12 datasheet.

It is made from a semi-conducting material called cadmium sulphide CdS. The LED has a flat side which is the cathode.

In other words, it lets the user set the ambient light level necessary to trigger the circuit. The more electrons it has, the more it will conduct, thus lowering its resistance. Also make sure you understand orp12 datasheet to use an LED.