PTV112-4220A-B103

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Rotary Potentiometers and Rheostats, such as the PTV112-4220A-B103, are versatile devices used in various electronics and control applications. These devices are used to precisely control electrical signals, to regulate variable resistances, and to measure various parameters such as degrees of rotation and acceleration. This article will discuss the application field and working principles of the PTV112-4220A-B103.

Applications

The PTV112-4220A-B103 is a two-terminal, rotary potentiometer specifically designed for small electronic applications. These include power supplies, instrumentation, telecommunications, and other precision analog circuits. Its high rotary angular accuracy and excellent linearity make it suitable for the accurate measurement of angles and distances. This device can also be used in motor speed controllers, position level indicators, joystick controls, and remote control systems.

The PTV112-4220A-B103 is also useful in battery-powered products, thanks to its low operating current of only 0.14mA. This allows it to be used in low power applications without significantly draining the battery. Its high voltage input of up to 200V makes it suitable for use with various power sources, including AC mains power.

Working Principle

The PTV112-4220A-B103 utilizes a rotating shaft and a resistive element in combination with a stationary wiper arm that moves along the resistive element on rotation of the shaft. This motion is what allows the device to control the level or amount of electric current flowing in the circuit. As the wiper arm moves along the resistive element, a variable resistance is created between the two terminals.

The PTV112-4220A-B103 has an integrated tension relief feature that prevents excessive force being applied to the wiper arm when the knob is turned. This ensures that the device lasts longer and operates more accurately, as the tension relief feature preserves the contact between the wiper terminal and the resistive element.

Additionally, the PTV112-4220A-B103 has a low contact resistance of 10 milliohm. This ensures that the variability of the output voltage is kept within tight tolerances as the wiper arm moves along the resistive element.

Conclusion

The PTV112-4220A-B103 is an ideal choice for a range of electronic applications. It provides excellent rotational accuracy and linearity, and a long life thanks to its integrated tension relief feature. Additionally, its low operating current and high voltage make it suitable for use with various power sources. Understanding its application field and working principles can help you choose the perfect device for your design requirements.

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