PTR902-2015K-B502

Temperature Coefficient:	--
Mounting Type:	Panel Mount
Bushing Thread:	M7 x 0.75
Actuator Diameter:	0.236" (6.00mm)
Actuator Length:	0.591" (15.00mm)
Actuator Type:	Knurled and Slotted
Termination Style:	PC Pins, Board Locks
Resistive Material:	Carbon
Adjustment Type:	Side Adjustment
Rotation:	300°
Number of Turns:	1
Series:	Pro Audio PTR90
Power (Watts):	0.05W, 1/20W
Built in Switch:	Rotary, SPST
Number of Gangs:	2
Tolerance:	±20%
Resistance (Ohms):	5k
Taper:	Linear
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Bulk

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What are Rotary Potentiometers, Rheostats and their Applications?

Rotary Potentiometers, Rheostats, and their application fields are common components in the electrical engineering industry. They are used in various applications such as adjusting parameters in a circuit, controlling the speed of a motor, damping mechanical vibration, and determining the current between two circuits. This article will provide an overview of these components and their application fields, focusing especially on the PTR902-2015K-B502 model.

Rotary Potentiometer:

A rotary potentiometer is a mechanical component designed to measure and modulate an electrical value. It consists of a resistance element connected to a rotating shaft encased in a circular housing. The resistance element is divided into two distinct parts - one stationary and one rotated. As the rotary knob is turned, the two parts of the resistance element move relative to each other. This causes a change in the resistance value. The rotary potentiometer is commonly used as an adjustable volume control in audio systems, especially guitar amplifiers, where it is used to adjust the intensity of the sound output.

Rheostat:

A rheostat is a type of variable resistor used to control the amount of current flowing through a circuit. It consists of an adjustable resistance element connected in series with the load. By turning the knob of the rheostat, the user can vary the resistance of the component, thereby altering the amount of current flowing through the circuit. Rheostats are commonly used in applications such as controlling the speed of a motor, adjusting the brightness of lights, and to regulate the temperature in a heater.

Application Field of the PTR902-2015K-B502

The PTR902-2015K-B502 is a rotary potentiometer-rheostat combination manufactured by Panasonic. Specifically, it is an adjustable dial rotary knob type, with a maximum power rating of 5W. This makes it a suitable choice for applications where high performance is needed, such as in audio systems where it is used to adjust volume levels. The PTR902-2015K-B502 is also versatile in terms of its operating temperature range, which is -10°C to +85°C. This makes it suitable for a variety of applications including motor speed control, light dimming, and temperature adjustment.

Working Principle of the PTR902-2015K-B502

The PTR902-2015K-B502 is designed to work in two distinct operational modes. When the dial is turned in the counterclockwise direction, the Potentiometer Mode is activated. This mode works by changing the resistance value of the component as the dial is turned. When the dial is turned clockwise, the Rheostat Mode is activated. In this mode, the resistance remains the same but the current flowing through the component is varied. This is achieved by changing the voltage at the contact between the movable and stationary parts of the component.

Conclusion

Rotary Potentiometers and Rheostats are both common components used in a variety of applications. The PTR902-2015K-B502 is an example of a combination of these two components, and is suitable for applications where high performance is needed. It has a wide operating temperature range and can be used for motor speed control, light dimming, and temperature adjustments. The component has two main operational modes – Potentiometer Mode and Rheostat Mode – that work by controlling the resistance and current respectively.

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