RJ4EWS501

Series:	RJ-4
Packaging:	Bulk
Lead Free Status / RoHS Status:	--
Part Status:	Active
Moisture Sensitivity Level (MSL):	--
Resistance:	500 Ohms
Power (Watts):	0.5W, 1/2W
Tolerance:	±10%
Temperature Coefficient:	±100ppm/°C
Number of Turns:	1
Adjustment Type:	Side Adjustment
Resistive Material:	Cermet
Mounting Type:	Through Hole
Termination Style:	PC Pins
Size / Dimension:	Square - 0.220" L x 0.197" W x 0.260" H (5.60mm x 5.00mm x 6.60mm)

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Trimmer Potentiometers

Trimmer Potentiometers are precision adjustable devices that are traditionally used in very small designs, such as consumer electronic products or automobiles. They are used to improve circuit performance and also to fine tune for user preferences. One example of a trimmer potentiometer is the RJ4EWS501. This particular trimmer pot has an application field and a working principle.

Application Field

The RJ4EWS501 is a single turn manual adjustment trimmer pot. Its most common applications include consumer electronics and automotive applications. It is ideal for making adjustments to volume, brightness, contrast, or any other adjustment that is necessary in a variety of products. It is also used to adjust the sensitivity of electronic circuits and can be used to compensate for temperature drift in operational amplifiers.

Working Principle

The RJ4EWS501 trimmer pot is a carbon element type of trimmer pot. It has a carbon track from one metal pin to the other, in a clockwise or counter-clockwise direction. As the user turns the screw, it turns the track and the resistance of the unit changes. It is important to remember that trimmer pots are designed to adjust a circuit, not to have any kind of current passing through them. Therefore, it is important to look at other variables, such as low temperature coefficients, wide temperature range and Over-Current resistance, before choosing the right trimmer pot.

Construction.

The RJ4EWS501 trimmer pot is constructed from a metal base plate, a stator containing the carbon track and two pins, and a rotor containing the adjustment screw. The trimmer pot is filled with a lubricant which provides a protective cover for the stator and the rotor. It is designed to reduce friction and heat generation during operation.

Limitations.

Whilst trimmer pots offer a very accurate way of making small adjustments, they do have some limitations. One of the main limitations is that they can only be used for small changes in resistance, as they cannot handle large voltage and current levels. It is also important to keep in mind that the durability of the trimmer pot is limited and should be taken into consideration when selecting them.

Conclusion.

The RJ4EWS501 trimmer pot is a very useful device for making small adjustments in consumer electronic and automotive products. It is a low cost and easy to use device that can be used in place of more expensive solutions. It is important to remember that trimmer pots are limited in the current and voltage levels they can handle and should only be used in the appropriate applications.

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