91BR25KLF

Series:	91
Part Status:	Active
Lead Free Status / RoHS Status:	--
Resistance:	25 kOhms
Power (Watts):	0.5W, 1/2W
Tolerance:	±20%
Temperature Coefficient:	±100ppm/°C
Number of Turns:	1
Adjustment Type:	Top Adjustment
Resistive Material:	Cermet
Mounting Type:	Through Hole
Termination Style:	PC Pins
Size / Dimension:	Rectangular - 0.385" x 0.375" Face x 0.280" H (9.78mm x 9.53mm x 7.11mm)

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Trimmer Potentiometers

Trimmer Potentiometers are commonly used as adjustable voltage-dividing networks, voltage adjusting devices, and also as position sensing devices. The 91BR25KLF is a type of trimmer potentiometer that has three terminals and is designed for use in a wide variety of applications.

Application of the 91BR25KLF

The 91BR25KLF is a variable resistor and is useful in controlling the voltage and current in a circuit. It is suitable for regulating both DC and AC signals. The 91BR25KLF is used in many applications such as audio equipment, controlling the output power of amplifiers, adjusting the brightness of LCD displays, controlling the speed of motors, and many others.

Construction of the 91BR25KLF

The 91BR25KLF has three terminals, namely the common terminal (C), the adjustable tap terminal (T), and the external rotary shaft terminal (S). The 91BR25KLF is typically constructed from a ceramic element with a wiper arm that adjusts the connection between the tap and the common terminal. The external rotary shaft is connected to a knob for manually adjusting the position of the wiper. The knob also serves to secure the wiper to the pot.

Working Principle of the 91BR25KLF

The 91BR25KLF trimmer potentiometer works on the principle of voltage division. When a voltage is applied to the common terminal and the adjustable tap terminal, a fraction of the voltage is applied to the wiper. The wiper moves along a circular track and adjusts the connection between the common and tap terminals at different angles, thus changing the voltage across the external rotary shaft terminal. The amount of resistance between the terminals can be adjusted by turning the rotary shaft.

Advantages of the 91BR25KLF

The 91BR25KLF offers several advantages over other types of potentiometers. It is more reliable than other types, with a longer mean time before failure. It is also more accurate, with a low current noise level and no temperature drift. In addition, it is versatile and can be used in both AC and DC applications.

Conclusion

The 91BR25KLF trimmer potentiometer is a versatile and reliable device with many useful applications. Its ability to precisely adjust the resistance between terminals makes it ideal for controlling the output power of amplifiers, adjusting the brightness of LCD displays, and controlling the speed of motors.

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