3252L-1-102LF

Series:	Trimpot® 3252 - Sealed
Packaging:	Bulk
Lead Free Status / RoHS Status:	--
Part Status:	Active
Moisture Sensitivity Level (MSL):	--
Resistance:	1 kOhms
Power (Watts):	0.75W, 3/4W
Tolerance:	±10%
Temperature Coefficient:	±100ppm/°C
Number of Turns:	25
Adjustment Type:	Top Adjustment
Resistive Material:	Cermet
Mounting Type:	Chassis Mount
Termination Style:	Wire Leads
Size / Dimension:	Rectangular - 0.500" x 0.187" Face x 0.500" H (12.70mm x 4.75mm x 12.70mm)

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Introduction:

Trimmer Potentiometers are components designed to allow precise setting of a parameter such as resistance or voltage within an electric or electronic circuit. The most common example of a trimmer potentiometer is the 3252L-1-102LF, an axial-lead trimmer potentiometer, which is typically used to adjust small parameters such as brightness of a LED or volume of a microphone. The 3252L-1-102LF is an adjustable voltage divider that consists of a fixed resistor (known as the \'wiper\') connected between two variable resistors. The variable resistors are constructed as helical tracks of conductive material (typically carbon) wound around a cylindrical body. The resistance of each track is set by a small adjustment screw.

Application Field:

The 3252L-1-102LF is designed for a range of applications. It can be used to adjust the gain of amplifiers (including audio, radio frequency, and power amplifiers), for setting the resonance of filters, and in measuring instruments such as oscilloscopes and spectrum analyzers. It is also used in devices such as automatic gain control (AGC) circuits, which adjust the output of a device to a predetermined level, and in voltage reference circuits, which are used to set a predetermined voltage level.

Working Principle:

The 3252L-1-102LF works on the principle of a variable voltage divider. This is a circuit consisting of two resistors (R1 and R2) connected in series with a voltage source and one or more terminals at which the voltage can be measured. The resistance of R2 is adjusted by a small adjustment screw, which can increase or decrease the resistance depending on which direction it is turned. This causes the voltage measured at the terminal to increase or decrease accordingly.The 3252L-1-102LF consists of three resistors, not two as in a conventional voltage divider. The first two resistors (R1 and R2) are constant and are connected in series. The third resistor (R3) is the wiper and is connected between the two fixed resistors. The wiper is adjustable using the small adjustment screw, allowing the resistance of R3 to be increased or decreased. When the adjustment screw is turned, the contact between the wiper and the tracks is modified, resulting in a change in the resistance of the circuit and thus the voltage at the wiper.The voltage at the wiper can be adjusted to different levels depending on the direction that the adjustment screw is turned, thus the output voltage can be adjusted to a desired level. This makes the 3252L-1-102LF ideal for applications requiring precise adjustment of the output voltage.

Conclusion:

The 3252L-1-102LF is a versatile trimmer potentiometer designed for a range of applications from audio amplification to stabilizing voltage reference circuits. It works by using a variable voltage divider circuit consisting of three resistors, with the third resistor (the wiper) adjustable by a small adjustment screw. This allows for precise adjustment of the output voltage to a desired level.

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