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Carbon Potentiometer PCB adopts printing conductive carbon element on the PCB to replace a potentiometer, Based on the mature printing technology, Using conductive carbon paste (thick film resistor) with high resistance value to be printed on two circuit terminals of the PCB, Then the conductive carbon and the circuit terminals will form one or more voltage dividers on the PCB. The thick film carbon element can achieve all the functions of Linear Potentiometer and Rotary Potentiometer and Logarithmic Taper Potentiometer, which is equivalent to transplanting or integrating the potentiometer module directly onto the PCB surface, Carbon 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.

Carbon Potentiometer PCB is a manually adjustable variable resistor that also allows you to change and regulate the current flowing through a resistor. The thick film resistor element can be printed on rigid board, flex board, and rigid-flex PCB, or Ceramic PCB, The main performance on such PCBs include carbon resistance (ohm), sheet resistance (ohm/square), and linear tolerance (like<1.0%). and durability (life time) etc.
Carbon Potentiometer PCB can be designed with 3 terminals to be manually adjustable variable resistor. Two of the terminals are connected to the opposite ends of a resistive element (thick film resistor), there is a strip of resistive material and this material creates resistance. and the third terminal connects to a sliding contact.

Carbon Potentiometer PCBs are Like Voltage Dividers, A voltage divider is a simple circuit that can be used to reduce the voltage in a circuit. To calculate the output voltage of a voltage divider. The output voltage is taken from a point between the two resistors. The output voltage depends on the ratio of two resistors connected in series.

Types of Carbon Potentiometer PCB?
Rotary Potentiometer PCB : Combine the conductive carbon resistive into the PCB, the most common type of potentiometer. They use a rotary knob to move the wiper around the thick film carbon resistor printed on the PCB.
Linear Potentiometer PCB : Combine the conductive carbon resistive into the PCB, consist of a linear slider that controls the position of the wiper, Sliding along the thick film carbon resistor printed on the PCB

How does a Carbon Potentiometer PCB work?

Carbon 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 Carbon Potentiometer PCB for?

Carbon 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

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Carbon Potentiometer PCB

What is Carbon Potentiometer PCB ?