485025M8843

Rotary Potentiometers and Rheostats

The model number 485025M8843 is a rotary potentiometer and rheostat that has its applications in control and voltage measurement circuitry. Potentiometers allow adjustable voltage measurements and rheostats regulate current. The 485025M8843 model is typically a three terminal device consisting of a resistive element, a fixed terminal, and a rotary control terminal.

Working Principle

In a rotary potentiometer, the resistance value changes as a dial is moved from one position to another. The value of the resistance is proportional to the angle of the knob. The angle of the knob is measured from the position of the fixed terminal.

The resistance between the fixed terminal and the rotary terminal is a direct function of the angle between the fixed terminal and the rotary terminal. The ratio between the resistances at the two terminals is also equal to the ratio of the angle of the knob to the full angle of the rotary shaft.

Applications

The 485025M8843 model is a rotary potentiometer and rheostat that is used in voltage measuring and current controlling circuits. Potentiometers are used in electronic circuits as adjustable voltage dividers. This allows the user to adjust the voltage that will be passed to the next part of the circuit. These devices can also be used as volume controls and dimmers.

Rheostats are adjustable current limiters. They are used in series with a circuit to limit the amount of current that can pass through. This resistance is adjusted with the knob on the device and is used to control motors, heaters, and lighting. The 485025M8843 can also be used as a voltage divider in low voltage applications.

Conclusion

The model 485025M8843 is a rotary potentiometer and rheostat that is commonly used in electronic circuits and voltage measurement circuits. This type of device is characterized by a resistive element, a fixed terminal, and a rotary control terminal. The resistance value changes as the knob is adjusted and this allows for the adjustment of current and voltage in a circuit. The 485025M8843 model is used in a variety of applications ranging from volume controls and dimmers to current limiters and voltage dividers.