Series:	Trimpot® RJ12 - Sealed
Packaging:	Tube
Lead Free Status / RoHS Status:	--
Part Status:	Active
Moisture Sensitivity Level (MSL):	--
Resistance:	10 kOhms
Power (Watts):	1W
Tolerance:	±10%
Temperature Coefficient:	±100ppm/°C
Number of Turns:	22
Adjustment Type:	Side Adjustment
Resistive Material:	Cermet
Mounting Type:	Chassis Mount
Termination Style:	PC Pins
Size / Dimension:	--

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Trimmer Potentiometers

A trimmer potentiometer, also referred to as a trimmer, is a three-terminal device used to adjust the resistance of a circuit. The trimmer potentiometer is a special type of variable resistor, and is designed for use in circuits where a small, accurate adjustment of resistance must be made. One example of a trimmer potentiometer is the RJ12FY103, a three-terminal surface-mount package device with an adjustable resistance range of 10KΩ to 500KΩ.The RJ12FY103 is an adjustable wire-wound potentiometer which consists of a resistive element, wiper, and control terminals. The resistive element is usually constructed from stainless steel or some other highly conductive material, and it consists of two vertical strips which are connected to each other at one end. The wiper is a sliding contact which can be moved along the resistance element, providing a variable resistance depending on the position of the wiper. The control terminals are used to adjust the position of the wiper along the resistive element, and can be operated by hand, even when the trimmer is embedded in a circuit board.The RJ12FY103 can be used in a variety of applications, such as automotive electronics, consumer electronics, and professional audio equipment. It can be used as an adjustable voltage regulator, frequency modifier, and as an adjustable gain element. It can also be used to tune the frequency of an oscillator, to calibrate the amplification level of an audio amplifier, and for any other circuit which requires the precise adjustment of something within the relative resistance range of 10KΩ to 500KΩ.The operation of the RJ12FY103 is very simple. The terminals of the trimmer act as three independent inputs. When one terminal is used as a supply voltage and the other two terminals are connected to the load, the resistance between them can be varied by adjusting one of the terminals. The third terminal acts as a control voltage, which can be used to maintain the desired resistance level. The output resistance can be adjusted by placing a voltage on the ‘V’ terminal and then adjusting the ‘W’ terminal until the desired resistance is obtained.The RJ12FY103 is an ideal trimmer potentiometer for applications where a small, precise resistance adjustment is required. It is capable of providing an adjustable resistance range of 10KΩ to 500KΩ, and is relatively easy to install and operate. The device’s three terminals provide versatile and accurate control, allowing users to adjust the resistance level of whatever circuit they are working on.

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