Rotary Potentiometer PCB

What is Rotary Potentiometer PCB ?

Rotary Potentiometers PCB combines the conductive carbon element into the Printed Circuit Board,They used a rotary knob to move the wiper around the thick film resistor which printed on the PCB, Rotary Potentiometers PCB adopts printing carbon element process to replace a potentiometer and combines it into the PCB, Based on the mature printing technology, The carbon paste material with high resistance value is to be printed on two terminals (opposite ends) of the PCB, Thus, the conductive carbon element and two terminals will form one or more voltage dividers on the PCB.
Rotary Potentiometers PCB can achieve all the functions of a Rotary Potentiometer, which is equivalent to transplanting or integrating the potentiometer module directly onto the PCB surface, Rotary Potentiometer PCB technology can not only effectively save the assembly space of the product, but also provide a variety of options for product developers. The most important thing is to effectively reduce the manufacturing cost of the product.

Rotary Potentiometers PCB is basically a adjustable voltage dividers. Internal to the Rotary Potentiometers PCB after assembly is a single carbon resistor element and a wiper, The wiper cuts the resistors into two and moves to adjust the ratio between both halves. Externally, there are usually with three pins: two pins connected to each end of the resistor, while the third connects to the potentiometer’s wiper.   A Rotary Potentiometers PCB is equivalent to transplanting or integrating the potentiometer module directly onto the PCB surface, If the two outside pins are connected to a voltage, the output will mimic a voltage divider. If the potentiometer will turn all the way in one direction, the voltage be zero. And if it turns to the other side, the output voltage approaches the input and a wiper in the middle position means the output voltage will be half of the input.
Rotary Potentiometers PCB allows you to print the thick film resistor element on the rigid board, flex board, rigid-flex PCB, or Ceramic PCB, The main performance of such PCBs include carbon resistance (ohm), sheet resistance (ohm/square), and linear tolerance (like<1.0%). and durability (life time) etc.

Rotary Potentiometer PCB is a type of special linear position sensor. They are used to measure displacement in any direction. Linear potentiometers linearly measure displacement and rotary potentiometers measure rotational displacement. The mechanical construction of rotary and linear potentiometers is very similar, each type consists of a contact wiper and a conductive element or track. In Linear Potentiometer PCB the track is straight, and in Rotary Potentiometer PCB the track is circular. The wiper moves along the track to measure the displacement by proportionally dividing the input voltage.

How does a Rotary Potentiometer PCB work?

Rotary Potentiometer PCB work by having a resistive element on the PCB. Both end terminals are attached to thick film resistor, and do not move. The wiper travels along the resistor strip when the knob is turned. The closer the wiper is to the end terminal it is wired in conjunction with, the less the resistance, because the path of the current will be shorter. The further away it moves from the terminal, the greater the resistance will be.

By the way, We also provided custom Multi-Wire Wipers (Contacts) for customer if needs, we can manufacture the wipers according to customer's drawing design requirements or specification. More information about wipers , Please refer to Multi-Wire Wipers.

What is a Rotary Potentiometer PCB for?

Rotary Potentiometer PCB can be used in the following areas:
Linear position sensor,Swilrl actuator position sensor
Steering systems, on agricultural machinery, heavy-duty machinery
Idling Motor Control Module, Blower Motor
Auto,motorcycle Applications, Headlight position sensor, ride height, gear shifts, steering angle measurement, suspension and throttle control
Plastic injection moulding machines
Audio control system, Music Equipment,Sound system
Valve Positioning
Joysticks, hand controllers
Medical equipment
Industrial automation machinery