Capacitors Blog

Suntan Technology Company Limited
----All Kinds of Capacitors

Suntan is a Hong Kong based manufacturer of Trimming Potentiometers. Including SMD Trimming Potentiometers, Rectangular Trimming Potentiometers, Wirewould Trimming Potentiomers, Phenolic Trimming Potentiometers and 5, 6, 7, 8, 9 terminal Trimming Potentiometers etc. 

Please refer to below cross reference :http://www.capacitors.hk/Trimming-Potentiometers/

Suntan can offer all kinds of Trimming Potentiometers, as below:
TSR-3006 - Rectangular Trimming Potentiometers 
TSR-3323 - 7 Terminal Square Trimming Potentiometers 
TSR-3296 - 5 Terminal Square Trimming Potentiometers 
TSR-3362 - 9 Terminal Square Trimming Potentiometers 
TSR-3386 - 8 Terminal Square Trimming Potentiometers 
TSR-3329 - Circularity Trimming Potentiometers 
TSR-3266 - 5 Terminal Square Trimming Potentiometers 
TSR-3318 - 6mm Phenolic Round Trimming Potentiometers 
TSR-3306 - 6mm Cermet Round Trimming Potentiometers 
TSR-3309 - 9mm Round Trimming Potentiometers 
TSR-065 - Phenolic Trimming Potentiometers 
TSR-3590 - Precision Multiturn Wirewoud Potentiometer 
TSR-105H - 6 Terminal Trimming Potentiometers 
TSR-C3305 - SMD Trimmer Potentiometer - 3mm

Trimmer Potentiometer Cross Reference

 Trimmer Potentiometer Cross Reference

Suntan Technology Company Limited
----All Kinds of Capacitors

Suntan share market information :X2-MPX Capacitor Manufacturer list 
 
X2-MPX Capacitor, metallized polypropylene capacitors are ideal for filters, power supplies applications.
 
Classes X1, X2, and Y were originally defined by the IEC in IEC 60384-14.  CENELEC has adopted EN 132400 (technically equivalent to, but structurally different from IEC 384-14 2nd edition), which now defines seven classes of line-filter capacitors.  Class X1 capacitors are impulse tested to 4 kV (higher for capacitors over 1.0 uF).  Class X2 capacitors are impulse tested to 2.5 kV (higher for capacitors over 1.0 uF).  Capacitors conforming to IEC60384-14 normally also conform to EN132400, and vice versa, and should be accepted in all European countries.

Jenn Fu: www.jefu.com.tw
Tenta: www.tenta.com.tw
Suntan : www.suntan.com.hk
Kemet: www.kemet.com
Epcos: www.epcos.com
Pilkor: www.pilkor.net
jb Capacitors: www.jbcapacitors.com
Wima: www.wima.com/
AVX: www.avx.com
Vishay : www.vishay.com
 
Suntan Hot Selling: Metallized Polypropylene Film Capacitor - X2 - TS08s
http://www.suntan.com.hk/Plastic-Film-Capacitors/TS08S.html

Suntan Technology Company Limited
----All Kinds of Capacitors

Trimming Potentiometers is used by more and more products, its application including satellite receivers, modems, LCD displays, set-top boxes, and meters and instruments, as well as entertainment devices, such as cameras, and MP3 players...

We can accept very small quantity with very competetive price , the delivery time is 2 weeks around. With our good support , our sales is keep increasing each month.

Suntan can offer all kinds of Trimming Potentiometers, as below:

TSR-3006 - Rectangular Trimming Potentiometers
TSR-3323 - 7 Terminal Square Trimming Potentiometers
TSR-3296 - 5 Terminal Square Trimming Potentiometers
TSR-3362 - 9 Terminal Square Trimming Potentiometers
TSR-3386 - 8 Terminal Square Trimming Potentiometers
TSR-3329 - Circularity Trimming Potentiometers
TSR-3266 - 5 Terminal Square Trimming Potentiometers
TSR-3318 - 6mm Phenolic Round Trimming Potentiometers
TSR-3306 - 6mm Cermet Round Trimming Potentiometers
TSR-3309 - 9mm Round Trimming Potentiometers
TSR-065 - Phenolic Trimming Potentiometers
TSR-3590 - Precision Multiturn Wirewoud Potentiometer
TSR-105H - 6 Terminal Trimming Potentiometers

Suntan Technology Company Limited
----All Kinds of Capacitors

Suntan pictures of Capacitors. Notice that all these capacitors have two wires coming out of them, one attached to each plate.

Suntan is well established and specializes in service and quality with an extensive export and import network. We provide quick turn around for our customers all over the world. Almost 30 years experience with all types of passive components using good materials, state of the art equipment and technology and ongoing QC coupled with extensive R & D assure our customers of the best quality and on time delivery.

Suntan offer many kinds of capacitors. Don’t hesitate to send us inquire to sales@suntan.com.hk .We will show you good quality and best price.

Suntan Technology Company Limited
---All Kinds of Capacitors

Suntan hot offer Mylar capacitors, below shows you the features.

Good reputation in use with consumer & industrial electronics. 
Optimum for automatic insertion due to their small size and light weight.
Coated with epoxy resin for superior heat resistance, humidity resistance and solvent resistance.

Also Suntan is a manufacturer of Plastic Film Capacitors, Trimming Potentiometers, Capacitors, Varistors and so on. The more details you can look through the website: http://www.suntan.com.hk/
http://www.suntan.com.hk/Plastic-Film-Capacitors/Mylar-Capacitor.html

We are welcome to received your inquire and solve you problem.

Suntan Technology Company Limited
----All Kinds of Capacitors

Potentiometers can be obtained with either linear or logarithmic laws (or "tapers").

Linear taper potentiometer

A linear taper potentiometer (Below Figure)has a resistive element of constant cross-section, resulting in a device where the resistance between the contact (wiper) and one end terminal is proportional to the distance between them. Linear taper describes the electrical characteristic of the device, not the geometry of the resistive element. Linear taper potentiometers are used when an approximately proportional relation is desired between shaft rotation and the division ratio of the potentiometer; for example, controls used for adjusting the centering of (an analog) cathode-ray oscilloscope.

Logarithmic potentiometer

A logarithmic taper potentiometer (Below Figure)has a resistive element that either 'tapers' in from one end to the other, or is made from a material whose resistively varies from one end to the other. This results in a device where output voltage is a logarithmic (or inverse logarithmic depending on type) function of the mechanical angle of the pot.

Logarithmic taper potentiometers are often used in connection with audio amplifiers. The most common use of a pot in audio is as a volume control. Since our hearing has a logarithmic response to sound pressure, it is important that the volume control should provide a smooth variation from soft to loud, such that a given change in position of the pot causes the same sensation of volume change at all levels.

In the early days, when an audio taper (logarithmic, or just log) was needed, the resistance element was indeed tapered, so that it provided a different resistively at different settings. By changing the physical taper, it was possible to make a pot provide the exact gradient of resistance needed. By definition, a linear pot has no taper as such (the resistance element is parallel sided), but the term has stuck, so we might as well get used to it.

The violet curve in Figure shows an antilog or reverse audio taper pot. These are quite uncommon, but used to be used for balance controls using a log/antilog dual section (commonly called dual gang) pot. It is shown on the graph mainly for its interest value, but they are generally an historical component now.

Suntan Technology Company Limited
----All Kinds of Capacitors

Trimming Potentiometers also come in many different shapes and sizes, with wattage ranging from 0.1W to 0.5W. Below shows several different trim pots, along with the symbol.

Resistance adjustments are made via a screwdriver. Exception is the trim pot on the lower right, which can be adjusted via a plastic shaft. Particularly fine adjusting can be achieved with the trim pot in the plastic rectangular casing (lower middle). Its slider is moved via a screw, so that several full turns is required to move the slider from one end to the other.

The upper model represents a stereo potentiometer. These are actually two pots in one casing, with sliders mounted on shared axis, so they move simultaneously. These are used in stereophonic amps for simultaneous regulation of both left and right channels, etc.

Lower left is the so called slider potentiometer.

Lower right is a wire-wound pot with a wattage of 20W, commonly used as rheostat (for regulating current while charging a battery etc).

For circuits that demand very accurate voltage and current values, trimmer potentiometers (or just trim pots) are used. These are small potentiometers with a slider that is adjusted via a screwdriver.

Previous blog we talk about Potentiometers by means of construction, they can be divided into 2 groups: coated and wire-wound. Now let us to to know more related details of it.

With coated potentiometers, (as shown follow figure), insulator body is coated with a resistive material. There is a conductive slider moving across the resistive layer, increasing the resistance between slider and one end of pot, while decreasing the resistance between slider and the other end of pot.

Wire-wound potentiometers are made of conductor wire coiled around insulator body.  There is a slider moving across the wire, increasing the resistance between slider and one end of pot, while decreasing the resistance between slider and the other end of pot. Wire-wound potentiometers are used in devices which require more accuracy in control. They feature higher dissipation than coated pots, and are therefore in high current circuits. Construction of a wire-wound circular potentiometer (as shown follow figure). The resistive element (1) of the shown device is trapezoidal, giving a non-linear relationship between resistance and turn angle. The wiper (3) rotates with the axis (4), providing the changeable resistance between the wiper contact (6) and the fixed contacts (5) and (9). The vertical position of the axis is fixed in the body (2) with the ring (7) (below) and the bolt (8) (above).

Coated pots are much more common. With these, resistance can be linear, logarithmic, inverse-logarithmic or other, depending upon the angle or position of the slider. Most common are linear and logarithmic potentiometers, and the most common applications are radio-receivers, audio amplifiers, and similar devices where pots are used for adjusting the volume, tone, balance, etc..

Circularity Trimming Potentiometers Features

1. (Single Turn/ Cermet/ Industrial/ Sealed)
2. (5 Terminal S tyles)

Circularity Trimming Potentiometers Electrical Characteristics

• Standard Resistance Range 50Ω - 2MΩ
• Resistance Tolerance ±5%, ±10%
• Absolute Minimum Resistance ≤1% R or 2Ω
• Contact Resistance Variation CRV≤3%or 3Ω
• Insulation Resistance R1≥1GΩ(100Vac)
• Withstand Voltage 500Vac
• Effective Travel 280°

Circularity Trimming Potentiometers Pictures