Kingtronics Blog

TOTAL RESISTANCE: (Rt)
The dc resistance between the input terminals with the wiper positioned to either end stop, or in dead band for continuous rotation potentiometers.

ABSOLUTE MINIMUM RESISTANCE: (Rm)
The resistance measured between the wiper terminal and each end terminal with the wiper positioned to give a minimum value.

END RESISTANCE: (Re)
The resistance measured between the wiper terminal and an end terminal when the wiper is positioned at the corresponding end of mechanical travel.
Absolute minimum resistance and end resistance are synonymous for continuous rotation trimmers.

TEMPERATURE COEFFICIENT OF RESISTANCE: (TC)
The unit change in resistance per degree celsius change from a reference temperature, expressed in parts per million per degree celsius as follows:



Where:
R1 = Resistance at reference temperature in ohms
R2 = Resistance at test temperature in ohms
T1 = Reference temperature in degrees celsius
T2 = Test temperature in degrees Celsius

Trimming-potentiometers, cermet trimmer  (Cross to Bourns, Murata, Tocos, Vishay, BI technology)
RKT-3269, RKT-3296, RKT-3323, RKT-3329, RKT-3362, RKT-3386, RKT-3309, RKT-3540S, RKT-3590, RKT-C3305, RKT-065.

Output 5KKpcs/month, more than 20 years' production experience 

Good quality and free samples are available for quality test

L/T: 3-5 weeks for common items

ISO & SGS certified &  RoHS compliant 

Stop-Clutch: (SC)
A device which allows the wiper to idle at the ends of the resistive element without damage as the adjustment shaft continues to be actuated in the same direction.

Stop-Solid: (SS)
A positive limit to mechanical and/or electrical adjustment.

Stacking:
The mounting of one trimming potentiometer adjacent to or on top of another utilizing the same mounting hardware.

Theoretical Resolution :
(Wirewound only) The theoretical measurement of sensitivity to which the output ratio may be adjusted and is the reciprocal of the number of turns of wire in resistance winding expressed as a percentage.
N = Total number of resistance wire turns.
1/N X 100 = Theoretical resolution percent

Printed Circuit Terminal: (P, W&X)
Rigid uninsulated electrical conductor so arranged, suitable for printed circuit board plug-in.

Solder Lug Terminal: (S)
Rigid uninsulated electrical conductor so arranged, suitable for external lead attachment.

Wiper: (SL)
The wiper is the member in contact with the resistive element that allows the output to be varied with the mechanical member adjustment.

Resistance Element :
A continuous, unbroken length of resistive material without joints, bonds or welds except at the junction of the element and the electrical terminals connected to each end of the element or at an intermediate point such as a center tap.

Adjustment Shaft :
The mechanical input member of a trimming potentiometer which when actuated causes the wiper to traverse the resistance element resulting in a change in output voltage or resistance.

Single Turn Adjustment :
Requires 360° or less mechanical input to cause the wiper to traverse the total resistance element.

For more products information please check: http://www.kingtronics.com/trimming-potentiometers/

Trimming Potentiometers:
An electrical mechanical device with three terminals. Two terminals are connected to the ends of a resistive element and one terminal is connected to a movable conductive contact which slides over the element, thus allowing the input voltage to be divided as a function of the mechanical input. It can function as either a voltage divider or rheostat.

Wirewound Trimming Potentiometer:
A trimming potentiometer characterized by a resistance element made up of turns of wire on which the wiper contacts only a small portion of each turn.

Non- Wirewound Trimming Potentiometer:
A trimming potentiometer characterized by the continuous nature of the surface area of the resistance element to be contacted. Contact is maintained over a continuous, unbroken path. The resistance is achieved by using material compositions other than wire such as carbon, conductive plastic, metal film and cermet.

For more products information please check：http://www.kingtronics.com/trimming-potentiometers/

The combination of proprietary cermet element technology, precious metal brush contacts and swaged pin element connections used in BI trimmers permits the manufacture of precision, high quality trimmers that span the resistance range from 10 ohms to over 5 megohms. The small size and planar construction of these trimmers minimize stray circuit reactances and permit the trimmers to perform well in many high frequency applications.

Leadscrew
Precision brass leadscrew cuts its own grooves in the teflon rotor so that the operation of the rotor is free of backlash. Setability is excellent.

Sealing Grooves
Leadscrew has specially cut grooves to ensure a watertight seal.

Ceramic Substrate
High density substrate provides an excellent base for the element and is a good conductor of heat.

Cermet Element
BI’s proprietary cermet element matches the materials in the wirebrush so that CRV is minimized and the high temperature setability is excellent.

Swaged Pins
BI’s pin connections, which are swaged to the substrate, are free of solder and maintain high conductivity with time and temperature cycling.

Learn more: http://kingtronics.com/

Ladies and Gentlemen attention pls,　

To order to promote our kingtronics products to more widely international market, we invited a group of special guest animals star as our speakers,, pls be serious and welcome, do not laugh !

Supplier Company: Kingtronics International Company         www.kingtronics.com
ISO 9001: 2008 manufacturer, 2 factories, ISO & UL & SGS certified.

Trimmer potentiometers also known as semi-variable potentiometer, They are used to measure or divide voltages, and to protect or control circuits.

Classification by structure:
Lap, Multi-turn(Kt Trimming Potentiometer: RKT-3540S,RKT-3590), Single-Joint, Double, Multi-tap Type, With Switch, Locking, Non-Locking Type, SMD Potentiometer.

Kingtronics potentiometers (Kt trimming potentiometer) include following part number: 
RKT-3006, RKT-3266, RKT-3296, RKT-3323, RKT-3329, RKT-3362, RKT-3386, 
RKT-3318, RKT-3309, RKT-065, RKT-105H, RKT-C3305, RKT-3540S, RKT-3590.

For more information, please visit http://www.kingtronics.com/trimming-potentiometers/