RJ22FL254

Series:	Trimpot® RJ22 - Sealed
Packaging:	Bulk
Lead Free Status / RoHS Status:	--
Part Status:	Active
Moisture Sensitivity Level (MSL):	--
Resistance:	250 kOhms
Power (Watts):	0.5W, 1/2W
Tolerance:	±10%
Temperature Coefficient:	±100ppm/°C
Number of Turns:	25
Adjustment Type:	Side Adjustment
Resistive Material:	Cermet
Mounting Type:	Chassis Mount
Termination Style:	Wire Leads
Size / Dimension:	Rectangular - 0.500" x 0.187" Face x 0.500" L (12.70mm x 4.75mm x 12.70mm)

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Introduction

Trimmer Potentiometers are widely used in precise automatic control and adjustment systems, such as radio and TV equipment, multi-functional digital audio-video players, VCRS and satellite receivers, digital cameras, and so on. Among them, the RJ22FL254 is particularly popular in the application field. This article aims to introduce its application field and working principle.

Application Field

RJ22FL254 trimmer potentiometers are mainly used for the static control of small size devices, such as audio amplifier, in-dash situation, pre-amplifier board sound box speaker, diode testing machine and more. Apart from that, they are also used for controlling the ON/OFF power of electrical equipment and circuit switch which makes it extremely efficient and durable.

Working Principle

The RJ22FL254 is a multi-turn trimmer potentiometer with an adjustable resistance, which is made of cermet material, and it is mainly composed of a fixed terminal, a movable arm and an adjustable terminal.When the rotary switch knob is turned clockwise, the resistance between the fixed terminals will increase, while the resistance between the adjustable terminals will decrease. On the other hand, if the rotary switch knob is turned counter-clockwise, the resistance between the fixed terminals will decrease, and the resistance between the adjustable terminals will increase. Through study we can find that, the two adjustable terminal resistance values are inversely proportional to the torque of the rotary switch knob.In general, the working principle of the RJ22FL254 trimmer potentiometers is mainly based on the resistance changes when rotary switch knob is turning, so as to adjust the actual amount of resistance connected in the circuit, and then to achieve the required output voltages.

Conclusion

In short, RJ22FL254 trimmer potentiometers are widely used in audio amplifier, in-dash situation, pre-amplifier board sound box speaker, diode testing machine and more due to its small size. Its working principle is mainly based on the resistance changes when rotary switch knob is turning so as to adjust the actual amount of resistance connected in the circuit.

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