3352P-1-254LF

Series:	Trimpot® 3352 - Open Frame
Packaging:	Bulk
Lead Free Status / RoHS Status:	--
Part Status:	Active
Moisture Sensitivity Level (MSL):	--
Resistance:	250 kOhms
Power (Watts):	0.5W, 1/2W
Tolerance:	±20%
Number of Turns:	1
Adjustment Type:	Top Adjustment
Size / Dimension:	Round - 0.350" Dia x 0.210" H (8.89mm x 5.33mm)
Termination:	PC Pins
Mounting Type:	Through Hole

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Thumbwheel Potentiometers: The 3332P-1-254LF Application Field and Working Principle

Thumbwheel potentiometers are invaluable pieces of technology in a range of industries. In particular, the 3332P-1-254LF – a device able to offer multiple functions with a single component – is highly sought after. It is found in many applications, with its outputs being suitable for either digital or analog use. As such, this article will explore the 3332P-1-254LF’s application field and working principle in order to provide clarity and understanding. The 3332P-1-254LF is a thumbwheel potentiometer, which is a device comprised of a wheel-like interface with a central shaft. In its most basic form, a potentiometer consists of a three-terminal resistor, with the middle terminal connected to the wheel-like interface. When this wheel is rotated, it changes the position of the middle terminal, and thus the resistance between the two outer terminals, which allows the controlling of the resistance in a circuit.The 3332P-1-254LF in particular is used for the control of analog circuits or for the conversion of mechanical motion into a digital signal. It is highly sought after due to its ability to be used in both applications, making it convertible and therefore ideal for a range of industrial applications. Specifically, the 3332P-1-254LF has a resistance range from six hundred ohms to one thousand ohms, with tolerances down to .5%. It has a three pin built-in terminal, a detent torque output of six hundred to one cg-cm, and a multifunctional output option of either analog or digital.Regarding its working principle and structure, the 3332P-1-254LF is composed of two major parts. The first of these is an interior slider assembly, comprising of two sliders – one permanent, the other, adjustable. When the wheel is rotated, the adjustable slider, which is connected to the shaft, is moved by the number of increments indicated on the wheel. This displacement of the slider occurs in parallel to a voltage division, which results in a change in resistance between the two outer terminals. The second component is the resistance element – a carbonised element that, when passing through the sliders, generates an opposition to the passage of electric current, enabling the regulation of the current’s intensity. The adjustment of the wheel changes the position of the sliders, which in turn results in a different voltage in the circuit, and making it a highly useful tool for controlling analog circuits.The 3332P-1-254LF can also be used for digital conversion. In this application, there is a switch mechanism composed of rail and wheel. If the wheel rotates this switch will open and close intermediate contacts, thus transmitting either a high or a low signal. In this way, the 3332P-1-254LF can be used to transmit mechanically triggered digital signals.This thumbwheel potentiometer is versatile in its applications and highly sought after by many industries. From controlling analog circuits to transmitting digital signals, the 3332P-1-254LF has demonstrated its value time and again. Understanding its application field and working principle can help engineers use it efficiently to their advantage.

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