Kingtronics Blog

Trimming Potentiometers

Variety of circuit adjustments and Terminal styles:

RKT-3362—9 Terminal styles (P, H,R,U,M,S,W,X,Z)
RKT-3266—5 Terminal styles (W,X,Y,P,Z)
RKT-3006-- 3 Terminal styles (P,W,Y)
RKT-3386—over 10 Terminal styles (B,C,H,J,S,W,V,G,X,F,M,K,T,U,Y,R…etc)
RKT-3296-- 5 Terminal styles (W,X,Y,P,Z)

Alternative to top brand:  

Wide Applications:  

RKT-3362--  Power capacitor, End Application: Energy Lighting , Board: MMI Board
RKT-3329--  smoke alarm, fire hoses, fire extinguisher, home system and other, remote control
RKT-3006-- electronic security
RKT-3386-- CD Player and other Audio player
RKT-3296-- DC Power supplies, UPS , Power Management Units and energy - saving electronic ballasts, vacuum cleaner, Air bed air supply device sensor&control peripherals, IP sensor appliance,UPS, Paper money counting machine

Contact us now info@kingtronics.com or related sales help you get the offer in the first time ! 

A potentiometer is an adjustable resistor, and it is constructed using resistive element comprising an arc of a circle and a sliding contact (wiper) travelling over that arc. Trimming potentiometers are Kingtronics' first products. Good quality and free samples are available for quality test.

Kingtronics trimming potentiometers perform a variety of circuit adjustments in all types of electronic equipment. Below are some Kt Kingtronics products of Trimming Potentiometers.

RKT-3006 3/4" (19 mm) Rectangular Trimming Potentiometer
RKT-3266 1/4" (6 mm) Square Trimming Potentiometer
RKT-3269 SMD Square Trimming Potentiometer
RKT-3329 1/4" (6 mm) Round Trimming Potentiometer
RKT-3309 9 mm Through-Hole Cermet Consumer Trimming Potentiometer
RKT-3540S Precision Potentiometer (Multiturn)

Welcome to check our full trimming potentiometers products and please let us know your demands, we will give our best offer to you.

Have you known Murata discontinued below series? It's time to search for new proper source, we Kingtronics are the best alternative with fast delivery, competitive price, certified quality, considerate service...

Maybe you are still using other famous brands' trimming potentiometer, once switch business to us, you will find out your profit is maximized in a much larger scale, no wonder it helps you to win more market share, we are the oldest factory of trimming potentiometer in China, it proves you get an enormously powerful business partner.

No more hesitation on sharing inquiries or orders with us, we are at your service all the time, let us join efforts and make every endeavour. 

Kt Kingtronics are potentiometers manufacturer since 1990. Our Trimming potentiometers perform a variety of circuit adjustments in all types of electronic equipment.

Kt Kingtronics Trimpots include these types:
Rectangular Trimming Potentiometer
Square Trimming Potentiometer
SMD Square Trimming Potentiometer
9 mm Through-Hole Cermet Consumer Trimming Potentiometer
Precision Potentiometer (Multiturn)
Trimming Potentiometer-3mm SMD
Phenolic Consumer Trimming Potentiometer

Typical applications of Kt Trimpots are in measuring linear distance, angles or rotations in production equipment, industrial test and measurement equipment, and medical equipment.

See detailed of Kt Kingtronics Trimming potentiometers, please click the below: 
http://www.kingtronics.com/trimming-potentiometers/.

Dear friends, as we know Kingtronics International Company is ISO, UL, SGS approval manufacturer. 
We have good quality of products, and we always make effort to provide customers better service.

Trimming Potentiometer is our one of strong product! We have nearly unbeatable good price and quality in this item. Now we have below Trimming Potentiometers samples stock for you to test. Free samples available! Welcome your inquiry.

 RKT--Trimming potentiometer

Datasheet: http://www.kingtronics.com/pdf/RKT-3296.pdf 

Datasheet: http://www.kingtronics.com/pdf/RKT-3386.pdf

 For more part numbers of our Trimming Potentiometer, please refert to our website: 
http://www.kingtronics.com/trimming-potentiometers/

Selection Criteria
The initial considerations for trimmer type selection are:
A. Resolution of adjustment
B. Setability and time to set
C. Physical and environmental conditions
D. Stability of setting required
E. Circuit packaging requirements

D. Stability of Setting
It is highly desirable that once the trimmer has been set, it should remain at that setting independent of time, operating temperature changes, vibration, shock and humidity. This property of stability is largely a factor of the compatibility of the materials at the moving contact interface and the thermal matching of the elements of the trimmer structure. BI uses noble metals in both the wire brush contact and the cermet element. These materials are relatively soft, highly compatible and provide an excellent, low resistance, non-corroding interface. The contact drive structure and materials are chosen for their stability and compatibility. The high contact forces utilized at the brush/element interface reduce susceptibility to shock and vibration.

The circuit designer can contribute significantly to short term operating and long term stability by mounting the trimmer away from high thermal gradients, hot spots and sources of excessive vibration.

E. Circuit Packaging
BI manufactures trimmers in a variety of package styles and sizes. The chances are excellent that stock models are locally available that will fit your requirements. Models include both pin style and surface mount single and multiturn configurations. Special electrical and mechanical features are available for specific customer applications. Call your local representative or the factory direct for information on special packaging.

Selection Criteria
The initial considerations for trimmer type selection are:
A. Resolution of adjustment
B. Setability and time to set
C. Physical and environmental conditions
D. Stability of setting required
E. Circuit packaging requirements 

C. Physical and Environmental Issues

1. Physical considerations in trimmer selection
• Case style desired
• Top or side adjust
• Pin style required
• Mechanical support required
• Board height requirements

2. Assembly process considerations
BI offers a variety of trimmer models that are sealed to help protect against moisture and board washing processes.
•Open vs. Sealed
• Max time/temperature exposure 

3. Environmental operating considerations
• Operating temperature range
• Resistance temperature coefficient
• Vibration and shock tolerance 

4. Human operating conditions When you complete your design, be careful to consider the tortures that clever human beings with a screwdriver in hand can impose on trimmers. For example, while a trimmer configuration mounted on edge might be a board space saver, a trimmer that mounts flat on the board may be more resistant to abuse by a heavy handed technician making adjustments through a hole in the chassis.

Selection Criteria
The initial considerations for trimmer type selection are:
A. Resolution of adjustment
B. Setability and time to set
C. Physical and environmental conditions
D. Stability of setting required
E. Circuit packaging requirements

B. Setability and Time to Set
The enemies of setability are poor resolution, mechanical backlash and high CRV. BI has addressed these problems in the design of trimmer models. BI’s smooth cermet materials, precious metal split brush contacts and teflon rotors work together to provide outstanding setability.

“Time to set” tests show the following:

II. Selection Criteria
The initial considerations for trimmer type selection are:
A. Resolution of adjustment
B. Setability and time to set
C. Physical and environmental conditions
D. Stability of setting required
E. Circuit packaging requirements

A. Resolution of Adjustment
1. Multiturns
• Multiturns provide better resolution than single turns. Models with a longer element exhibit better resolution than those with a short element. Typical multiturn shaft revolutions range from 15 to 20 turns for end to end travel.
• The contact design and stability are important considerations in achieving high resolution. The contact area must be small and the contact must move smoothly in order to provide high resolution. A noisy contact will make accurate setting very difficult.
• All trimmers utilize smooth cermet materials, precious metal wire brush contacts and backlash-free wiper designs that ensure high resolution setability.
• Reference multiturn models:
Square multiturns - 44, 64, 66, 67, 68
Rectangular multiturns 78, 89

2. Single Turns
• Single turn resolution for models with a longer cermet element (larger diameter) is quite respectable. This is especially true with wire brush contacts and smooth cermet films.
• Reference single turn models:
Small diameter - 24, 25, 62, 82
Larger diameter - 72, 91, 93

3. Surface Mount Models
• Single turn - 21, 23, 83
• Multiturn - 44, 84

A trimmer can be used as potentiometer or rheostat. A potentiometer is a three terminal device typically used to vary voltage. In potentiometric configurations, the wiper terminal is lightly loaded so that wiper current is generally small.

A rheostat is a two terminal device typically used to control current. Wiper current is generally larger in rheostat circuits.

I. Types of Applications
The majority of applications for trimmers occur in electronic circuits. 
Typical uses are in the following devices:
A. Amplifiers
B. Timing circuits
C. Voltage and current regulators
D. Voltage and frequency converters