380C11000

Temperature Coefficient:	--
Mounting Type:	Panel Mount
Bushing Thread:	3/8-32
Actuator Diameter:	0.250" (6.35mm)
Actuator Length:	2.000" (50.80mm)
Actuator Type:	Round
Termination Style:	Solder Lug
Resistive Material:	Conductive Plastic
Adjustment Type:	User Defined
Rotation:	312°
Number of Turns:	1
Series:	380
Power (Watts):	2W
Built in Switch:	None
Number of Gangs:	1
Tolerance:	±10%
Resistance (Ohms):	1k
Taper:	Linear
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Bulk

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Rotary Potentiometers, Rheostats

Rotary potentiometers, also known as rheostats, are one of the oldest and most commonly used components for measuring, controlling and adjusting electrical voltage and current in various electronic circuits. Using a rotation of the knob, an operator can adjust the resistance of the device to alter the impedance of the circuit, changing the duration, frequency, amplitude and power of the electrical signal. Potentiometers are generally subdivided based on their physical construction: rotary pens are one type. They come in various shapes, sizes and capabilities, but all have the same basic design. Like other potentiometers, they consist of terminals, a wiper or contact point, and a resistor with adjustable resistance elements.Generally, a rotary potentiometer has a shaft or knob to allow the user to rotate it in two directions (clockwise or counter-clockwise). The contact point slides over the resistive elements, thereby allowing resistance to vary between the two end terminals. The knob also has a scale that indicates the resistance value of the potentiometer at a given point in time. The position of the resistance wiper is controlled by the actuation of the knob.Rotary potentiometers are used in a wide range of applications and can serve both adjusting and sensing functions, for example as an adjustable volume control for audio components, as a rheostat for various sake motors, for precise control of audio signal levels in combination with an A/D converter for digital audio signals, for precise adjustment of offset voltages in signal processing circuits, voltage dividers and many other uses.In a rotary potentiometer, the contact wiper is connected to the shaft of the knob, and a mechanical linkage is often provided to convert the knob\'s position into the electrical resistance of the potentiometer. This design makes the rotary potentiometer an ideal choice for precise adjustment.The basic construction of a rotary potentiometer consists of a resistive element (typically a carbon element or a wire-wound element), a sliding contact point, and terminals. The resistive element is connected between a pair of terminals, which ensure that electric current flows through the element. The sliding contact point can move along the resistive element, adjusting the effective resistance between the two terminals. When the knob is rotated, the contact wiper is moved along the resistive element to increase or decrease the resistance between the two terminals.The working principle of a rotary potentiometer is based on the Ohm’s law. When a voltage is applied across the two terminals, the current will flow through the resistive element. The magnitude of the current is determined by the resistance of the element (R). The magnitude of the voltage across the two terminals is determined by the current flowing through the resistor, and is equal to the product of the current and the resistance (V=I*R). Ultimately, the resistance of the rotary potentiometer can be increased or decreased by rotating the knob. This will change the position of the contact point, and therefore the resistance across the two terminals, and thus the current flowing through the element and the voltage difference between the two terminals.In conclusion, rotary potentiometers, also known as rheostats, are one of the oldest and most commonly used components for measuring, controlling and adjusting electrical voltage and current in various electronic circuits. By adjusting the resistance of the device, a user can alter the duration, frequency, amplitude and power of the electrical signal. They come in various shapes, sizes and capabilities, with a resistor and adjustable resistance element. The rotary potentiometer is an ideal choice for precise adjustment, and its working principle is based on the Ohm’s law.

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