Kingtronics Blog

Recently SMD 3mm Trimmer C3305 are pretty popular in the market, we sell large quantity with much competitive prices, received satisfactory feedback from customers.Welcome to send us inquiry.

Short L/T, Stable Quality, Surprising Prices!!!
ISO, SGS and UL Certified Manufacturer since 1990, one of the oldest factories producing cermet trimmer in China.
RoHS Compliant

Brief Description:
Trimmer 3386, 3/8" Square Single Turn Cermet Trimming potentiometer, 3386B, 3386C, 3386H, 3386J, 3386W, 3386S, 3386X, Kingtronics.

Detailed Description:
Standard Resistance Range 10Ω - 5MΩ
Resistance Tolerance ±5%, ±10%
Absolute Minimum Resistance ≤1% R or 2Ω
Contact Resistance Variation CRV≤3%
Insulation Resistance R1≥1GΩ(100Vac)
Withstand Voltage 600Vac
Effective Travel 300°
Standard Packaging 50pcs, per tube

RoHS compliant
20 years manufacturer, with good quality and attractive price
Kingtronics own brand “KINGTRONICS”

Kingtronics other trimming potentiometer:
3296 3006 3266 3362 3323 3329 3309 3590 3540 065 063 C3305 

Some customers said Murata stop some trimmer like PV34; in Kingtronics (Kt) , the equivalent part number is RKT-3386.

Kingtronics is one of the oldest trimmer potentiometer factory in China, with ISO, SGS certified. We sell top quality for trimmer in China.

Kingtronics (Kt) Trimming Potentiometer Cross Reference Guide 

Example1: Flicker adjustment for LCD (Liquid - crystal display)
To adjust the reference voltage (VCOM) of LCD.
With inappropriate reference voltage, there will be flicker on LCD screen.
Use trimmer Potentiometers to adjust reference voltage for flicker restraining.

LCD has some flickers if the voltage is not suitable for LCD.
 

You can reduce the flickers when you adjust the voltage by using trimmer potentiometer.
 

Example2: Gain adjustment for Blu-ray, DVD, CD disc reading optical pick - up.

As record media Blu-ray, DVD and CD etc. usually be used, and we use optical pick - up for the data 
reading and writing from disc. In an optical pick - up, there is a light - sensitive element to detect reflected 
light from disc.And a trimmer potentiometer is used to adjust the sensitivity of this light - sensitive element.

Circuit example Playback system device (ex, DVD, CD, playback)

Example3: Sensitivity adjustment for sensor products.

There are all kinds of sensors around our life.

• Lights turn on automatically when human be detected.
• Smoke detector for fire preventing.
• Parking assist system for distance from car to wall.
• Product detection sensor in factory.
   

 For these sensors, trimmer Potentiometers are used for suitable sensitivity.
 

Principle of Trimmer Potentiomerets

A fixed resistor with a mechanism to change resistance construct a trimmer potentiometers. The principle is with the changing of resistive element length according a wiper sliding, the resistance will be changed. Use this method, with same sectional area, the resistance can be changed relative to resistive element length, and products can be manufactured in low cost.

            R: Resistance [Ω] 
            ρ: Resistivity [Ω/m] 
            L: Resistive element length [m] 
            S: Resistive element sectional area [m2]

• The position of contact point decide the length of resistive element.
  Resistance between No.1 and No.2 (R12) will become higher if contact point become closer to No.3.
• For easy introduction, we drew the resistive element like a rectangular solid. Actually, almost resistive element is round shape 
  (U - shaped) .So the track of wiper is circle, and resistance is decide by the angle of wiper. 

Change in resistance of Trimmer Potentiometers

There is the relationship between wiper position (angle) and resistance in below figure.

The output wave is besed on below conditions.
Resistive element is round shape (U - shaped) /Single - turn/No whirl - stop.

Construction
Single - turn, no whirl - stop typ    The relationship between wiper position　(angle) and resistance

Feature of Trimmer Potentiometers

By using trimmer potentiometers, it is no problem to set surrounding circuit constant roughly.
Would you please use trimmer potentiometers if it is difficult to decided on a resistance value in your circuit. You can design your circuit roughly and quickly as the result.

Kingtronics (Kt) Trimming Potentiometers Product List

Trimmer potentiometer 3296, 3006, 3386, 3266, 3362, 3329, 3590S, 3540S, 065, SMD C3305...

(zastřihovač potenciometr; preset; trimmer potenziometro; тример-потенциометъра; подстроечный потенциометр; підлаштування потенціометр;)
 
We are one of the oldest factories for producing trimmer potentiometer in China since 1990, with mature technology.
Different from other potentiometer suppliers, our potentiometer quality is very good, got approval wiht  ISO & SGS certifications, RoHS Compliant.

We also can make equivalence for brands like Bourns, BI Technology, Tocos, Murata, Vishay, Copal, CTS... 
 
RKT-3006 3/4" (19 mm) Rectangular Trimming Potentiometer
RKT-3266 1/4" (6 mm) Square Trimming Potentiometer
RKT-3296 3/8" (9 mm) Square Trimming Potentiometer
RKT-3323 1/4" (6 mm) Square Trimming Potentiometer
RKT-3329 1/4" (6 mm) Round Trimming Potentiometer
RKT-3362 1/4" (6 mm) Square Trimming Potentiometer
RKT-3386 3/8" (9 mm) Square Trimming Potentiometer
RKT-3309 9 mm Through-Hole Cermet Consumer Trimming Potentiometer
RKT-3540S Precision Potentiometer (Multiturn)
RKT-3590 Precision Potentiometer (Multiturn)
RKT-C3305 Trimming Potentiometer-3mm SMD
RKT-065 Phenolic Consumer Trimming Potentiometer

A trimmer  is a miniature adjustable electrical component. It is meant to be set correctly when installed in some device, and never seen or adjusted by the device's user.
 
Trimmers can be variable resistors (potentiometers), variable capacitors, trimmable inductors. They are common in precision circuitry components, and may need to be adjusted when the equipment is serviced.
 
Trimmers are mounted directly on circuit boards, are usually found in superhet radio and television receivers, in the Intermediate frequency, oscillator and RF circuits.
 
In one words, trimmers are in wide used in our daily life, so the demand of trimmer is huge in the market!

Kingtronics is a manufacturer of Trimming potentiometer since 1990, we are one of the oldest factory for trimming potentiometer.
 
All products are RoHS compliant under our own brand "kingtronics" with registered trade mark "Kt" on the body.

We produce all parts with mature technology, quality is very good with ISO & SGS certifications available, and price is quite competitive in the market!

Please visit our website, you will find more excellent parts!

Precision Potentiometer 3590

Brief description:
Precision Potentiometer 3590, PRECISION MULTITURN WIREWOUND POTENTIOMETER, round, 3590S, Kingtronics
 
Detailed Description:
Standard Resistance Range 1KΩ - 100KΩ
Resistance Tolerance ±5%
Independent Linearity ±0.5%
Effective Electrial Travel ≥3600° - 10°
Treninal Resistance ≤0.2% or 5Ω
Noise ≤3% R or 5Ω
Insulation Resistance R≥1GΩ
Withstand Voltage 101.3kPa710V, 8.5kPa470V
Standard Packaging 10pcs/box, 20pcs/box 

Do you need any trimming potentiometers?  
 
We offer "kingtronics" brand with competitive price,  very speedy delivery and very high quality.  
 
And our products are well crossed to Bourns Brand, which perform a variety of circuit adjustments in all types of electronic equipment. 
 
Around the world, trimmers are used in virtually every electronic market.
 
Here list you the detail features for one of our most popular part RKT-3296
 
3/8" Square Multiturn Trimming Potentiometer, Cermet, Sealed, 3296W,3296X,3296Y,3296Z,3296P. 

Detailed Description:

Square trimming potentiometer, Multiturn, Sealed, Cermet

Standard Resistance Range 10Ω - 5MΩ

Resistance Tolerance ±5%, ±10%

Withstand Voltage 640Vac

Temperature Range -55℃ ~ +150℃

Effective Travel 28 turns nom

Standard Packaging 50pcs, per tube

All of our products are with RoHS compliant, what's more we have more than 20 years experience for trimmers, have mature technology!

Please come up to kingtronics, we will be your best choice!

Kingtronics other trimming potentiometer ( RoHS compliant, ISO/SGS certified )
RKT-3006, RKT-3266, RKT-3296, RKT-3323, RKT-3329, RKT-3362, RKT-3386, RKT-3309, RKT-065, RKT-C3305, RKT-3540S, RKT-3590
 
Brief description:
Single Turn/ Phenolic/ Industrial
 
Detailed Description:
Standard Resistance Range  100Ω - 2MΩ 
Resistance Tolerance  ±30% 
Residual Resistance  Max 5% of Nominal Resistance, But under 30Ω 
Resistance Taper  Linear (B) 
Rated Power  0.1W 
Operating Voltage  50V Max 
Potational Life 
Max ±5% change in resistance after 100 unloaded rotations 
Load Life Max ±5% change in resistance after 3 hours loaded 
 
Rotational Angle  200° ± 20° 
Rotational Torque  30~350g.cm 
Stop-end Strength  500g.cm minimum

-- ISO 9001: 2008 manufacturer, 2 factories, ISO & UL & SGS certified.
-- Meet us at Electronica 2012, Booth No.: B6.437/5, 13-16 November ,2012, Munich, Germany.
-- Meet us at electronicAsia 2012，Booth No.: 5G-D12, 13-16 October 2012, in HK.

Pls contact us: info@kingtronics.com