Kingtronics Blog

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 

Kingtronics CKT series tantalum chip capacitors have high volumetric efficiency and stable electric perfermances.

CKT surface mount tantalum capacitors can offer 6 sizes: P size (2012), A size (3216), B size (3528), C size (6032), D size (7343), E size (7343). 

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.

Dear Valued customers,
 
We invite you to help us promote our products, we can give your full support, like our catalogue/ leaflet, sample kit, filefolder and mutiltool.
 
http://www.kingtronics.com/pdf/Kingtronics-Promotion-Literature.pdf

My dear friend, best wishes for the New Year. May 2013 be a very prosperous year to you! Personally and professionally!

We were keeping in touch in the past year. I guess you already know more about our components below? Hope can do some business with you this year! Look forward to your 1st order/inquiry in soon.

Active Components:

Diode: M7 LL4148 S1M SM4007 6A10 BZX55 BZV55C BZX85C 1N4729A...
Bridge rectifier: DB107S MB6S KBL410 KBPC3510 GBU410...

Passive Components:
Radial multilayer ceramic capacitor & dipped tantalum capacitor
Trimming potentiometer 3006 3266 3296 3329 3362 3386 3540 3590 C3305...

Our sales office won't be closed during the Chinese Spring Festival. Pls feel free to send us your requirements to info@kingtronics.com

Dear Customer,

How is your new year's holiday ? I believe you must have a wonderful time, right ?

Do you have any inquiry or order request now ? Welcome send me to check, i will work as normal during our Chinese Spring Festival.

We are more than happy to help you do more business. I would like to represent our staff and leadership wish you a prosperous and happy new year !

Kingtronics MKT series: radial multilayer ceramic capacitor
0.1uF 50V +/-10% X7R P: 5.08mm Bulk RoHS
0.1uF 50V +/-20% Y5V P: 5.08mm Bulk RoHS
0.5pF 50V +/-5% NPO P: 5.08mm Bulk RoHS
Can replace following Brand: AVX SR series, SA series; Murata RPE series ; Kemet C315-C350; Vishay K (Mono Cap); Nippon THD series; Panasonics ECU-S

Kingtronics TKT series: radial tantalum capacitors
1uF 25V +/-20% P: 2.54mm Bulk RoHS
1uF 35V +/-20% P: 5.08mm Bulk RoHS
2.2uF 25V +/-20% P: 2.54mm Bulk RoHS
Can replace following Brand: AVX Tap series; NIC NDTM series; Kemet: T350 to T390 TB; Nemco TB series; China CA42 series ;

RKT--Trimmer potentiometer, cermet trimmer( cross to Bourns, Murata, Tocos, Vishay, BI technology)
RKT-3296W-103-R
RKT-3006P-102-R
RKT-3386F-104-R
RKT--3362P-502-R
RKT-C3305 3mm SMD trimmer (cross to Bourns 3303 and Murata PVZ3A)

Kingtronics International Company

ISO 9001: 2008 manufacturer,  UL certification, SGS certification available.

Brand:  Kingtronics, trademark: Kt, King, Kingtronics

Welcome to visit us! We will share our booth number with you soon.
If you are also attending this fair, please let us know your schedule. Thank you!
 
Kingtronics has been an ISO-certified manufacturer since 1990 and operates 2 factories. Our products are of excellent quality, making us the best choice for your supplier needs. We supply to leading distributors such as Newark Farnell, Avnet Abacus, and Anglia UK.
 
We look forward to meeting you at the upcoming Expo Electronica fair.

Bom dia querida,

você vai assistir a FIEE ou electronicAmericas em 2013?

Nós trabalhamos com muitas empresas grande, como Avnet, Farnell, Newark, devido à excelente qualidade e preços competitivos.

você poderia pls me enviar alguma RFQs? Vamos nos tornar seu parceiro de redução de custos! E-mail: sara@kingtronics.cn

Diodo:
US$0.0068/pc for 500K~1KKpcs M7 DO-214AC T&R RoHS
US$0.0032/pc for 2KKpcs LL4148 LL-34 T&R RoHS
US$0.0046/pc for 1KKpcs 0.5W BZX55C2V7 ~ 47V DO-35 Bulk RoHS
US$0.0065/pc for 1KKpcs 0.5W BZV55C2V0 ~ 47V LL-34 T&R RoHS

MKT--condensadores multicamadas de cerâmica
US$0.0055/pc 0.01uF 50V X7R +/-10% P:5.08mm Bulk RoHS
Cross Guide: AVX--SA SR series, Murata RPE series, Kemet C315-C350, TDK FK series

RKT--Trimming Potentiometers (ISO/SGS certificado):
US$0.064/pc RKT-3296W-102-R