Kingtronics Blog

A trimming potentiometer is a manually adjustable resistor. This device works in relatively simple way. One terminal of the potentiometer is connected to a power source. Another is hooked up to ground (a point with no voltage or resistance and which serves as a neutral reference point), while the third terminal runs across a strip of resistive material.

This resistive strip generally has a low resistance at one end; its resistance gradually increases to a maximum resistance at the other end.

The third terminal serves as the connection between the power source and ground, and is usually interfaced to the user by means of a knob or lever.

The user can adjust the position of the third terminal along the resistive strip in order to manually increase or decrease resistance.

By controlling resistance, a potentiometer can determine how much current flows through a circuit. When used to regulate current, the potentiometer is limited by the maximum resistivity of the strip.

The power of this simple device is not to be underestimated. In most analog devices, a potentiometer is what establishes the levels of output.

In a loud speaker, for example, a potentiometer directly adjusts volume; in a television monitor, it controls brightness.

Kingtronics is a professional trimming potentiometer manufacturer. We have got ISO9001:2008 Certification. The quality is 100% guareeted.

You can visit our website www.kingtronics.com for the details,or you can inquire me directly,I am at your service at anytime.

Olivia (sales1@kingtronics.com)

1.Category :

Electronic Components >>Passive Components>>Resistors>>Potentiometer>>trimmers

2.Description:

Kingtronics produce cermet trimmer potentiometer since 1990, very good quality, all RoHS compliant, with SGS report available, short delivery.

Trimming PotentiometersTrimming potentiometer is Kingtronics’first products. Kingtronics produce trimming potentiometer since 1990, include

following part number: RKT-3006, RKT-3266, RKT-3296, RKT-3323, RKT-3329, RKT-3362, RKT-3386, RKT-3309, RKT-065, , RKT-C3305, RKT-3006, RKT-3590...

3.Applications:

Potentiometers are resistors in which provides variable resistance by adjusting a control device.

Potentiometers have a wide range of industry applicatrions such as in systems of control or regulation, in automatic systems of control or regulation,

in measuring devices, or in radio technical devices. In an electric power steering system of a vehicle, a potentiometer is linked with a torsion bar spring which

receives the steering torque from the steering wheel of the vehicle.

1. control ceiling fan speed.

2. control radio volume.

3. dimmer switches.

4. general consumer electronics.

5. audio products / car audio equipment.

6. communication application equipments.

7. house cinema system equipments.

8. control volume of television, CD, PC player, PV video, earphone etc. etc.

9. electric lamp and lanterns.

10. other electronic products.

Kingtronics international company

• Tel: 86 769 8118 8110
• www.kingtronics.com
• skype: kingtronics.sales2
• email (msn): sales4@kingtronics.com

Strong products:

Diode M7 S1M LL4148 BZV55C, Bridge rectifier

Radial mlcc capacitor, dipped tantalum capacitor, Trimming potentiometers

Do you buy Trimming Potentiometer? Kingtronics are ISO 9001: 2008 maufacturer of Trimming Potentiometer 3296 3006 3386 3266 3590S 3329, Kingtronics produce trimming potentiometer since 1990.

And Trimming potentiometer is Kingtronics’ first products. We have Kingtronics own brand “KINGTRONICS” with high quality and attractive price.

What's more, we can provide equivalent Trimming Potentiometer of Bourns and other famous brand like below:

Such as RKT-3296( BI 67W/ Murata PV36W / Tocos J9X), RKT-3266W (BI 64W / Murata PV37W) ,RKT-3386P(BI 72P/ Murata PV34P/ Vishay 63P ),RKT-3590S( Bourns 3590S)

Could you please kindly visit our website, you will find our ISO certification and SGS certification on website. Also you can see our Trimming Potentiometer cross guide and find more informaiton about our other Trimming Potentiometer.

Please vist www.kingtronics.com and welcome to receive your inquiry.

Do you buy Trimming Potentiometer? Come here!

Kingtronics are ISO 9001: 2008 maufacturer of Trimming Potentiometer 3296 3006 3386 3266 3590S 3329, we produce Trimming Potentiometer since 1990.

Please kindly visit our website: www.kingtronics.com, you will find our ISO certification and SGS certification on website, besides, we put Trimming Potentiometer cross guide on website.

We can provide equivalent Trimming Potentiometer of Bourns, Murata, BI Technoly, Tocos, and Vishay.

RKT-3296W        BI 67W        Murata PV36W        Tocos: J9X
RKT-3266W        BI 64W        Murata PV37W
RKT-3386P         BI 72P         Murata PV34P         Vishay 63P
RKT-3590S         Bourns 3590S

You can find complete cross list through http://www.kingtronics.com/pdf/cross-reference.pdf

As ISO 9001: 2008 manufacturer, Kingtronics produce Trimming Potentiometer since 1990.

We mainly focus on these part number: 3296 3006 3386 3266 3362 3329 3590S

Most of above are through-hole, please help me sell C3305, this is 3mm SMD trimmer.

RKT-C3305
Datasheet:http://www.kingtronics.com/trimming-potentiometers/RKT-c3305.html
Cross to:Bourns C3303 Alps: RH03ADC Citec: 3130 , Murata: PVZ3A Panasonic: EVM1SSW/X

Zener diode transfers current forward and backward, while traditional diodes are only capable of transferring current forward.

Many different electronic systems use Zener diodes to control their circui's voltage levels.

While there are several ways of doing this, Zener diodes provide efficient voltage regulation without damaging the diode itself.

How Zener Diodes Work
Zener diode acts like a regular diode as current moves in a forward direction in its circuit.

However, when a large enough voltage is applied to the diode in the reverse direction, it travels against the current from the output to the input.

Zener diodes can limit the amount of current that passes through them so that the voltage going backward limits the voltage going forward.

Advantages
Zener diodes are very small and can be integrated into virtually any electronic device, especially small circuits that cannot accommodate other forms of voltage regulation technology.

Zener diodes are also relatively inexpensive and are compatible with most other systems, making them the preferred voltage regulation device.

Variable resistors used as potentiometers have all three terminals connected. This arrangement is normally used to vary voltage, for example to set the switching point of a circuit with a sensor, or control the volume (loudness) in an amplifier circuit. If the terminals at the ends of the track are connected across the power supply then the wiper terminal will provide a voltage which can be varied from zero up to the maximum of the supply.

Kingtronics are potentiometers manufacturer since 1990. Trimming potentiometers are Kingtronics' first products. RKT-3006 is one of the Trimming potentiometers,It is used where very precise adjustments must be made.RKT-3006 has 3 terminal styles:3006W, 3006P, 3006Y. The screw must be turned many times (10+) to move the slider from one end of the track to the other, giving very fine control.

Capacitors are devices which store electric charge. They are usually made from two parallel metal surfaces with some insulating dielectric layer between them. If one of the plates is charged, and the other is grounded,  opposite charges will accumulate on it  by influence, while the net charge stays zero. The capacitance is the magnitude of charge on one plate Q divided by the voltage V across the plates.

The unit of capacitance is the farad. 1 F = 1As/V

The capacitance of two parallel metal plate of area A and d distance apart (supposed that the lateral sizes of the plates are much bigger than the distance between them) is

where e is called the permittivity of the insulating material between the plates.

The permittivity of vacuum is e0 = 8.85 ×10-12 As/(Vm).

The capacitance can be increased by applying high permittivity material between the metal plates, like paper, plastic, oil, mica, or ceramic. Typical capacitance values range from about 1 picofarad (pF, 10-12 F) about 1000 microfarads (mF, 10-6 F)

The symbol for capacitor in circuit diagrams is:

The capacitors are rated according to the voltage that can be safely applied across their terminals - breakdown voltage.

The energy stored in a capacitor is

Electrolytic capacitors use aluminium or tantalum plates immersed in a semi-liquid chemical compound which forms a thin insulating oxide layer on one of the electrodes. These types of capacitors are said to be polarized and can be used only in such way that the terminal denoted by “+” is always at higher potential as the “–“ one. Because of the thin oxide layer, the capacitance of the electrolytic capacitor is usually high, 1-1000 mF.

Dipped tantalum capacitors also have high capacitance but small size at the same time. They are made of a sintered tantalum powder core. Because of the pores, it surface is very large. The core is oxidized. The core is dipped into manganese nitrate solution,  than put in a furnace where  the nitrate decomposes into manganese oxide which fills the pores and serves as the other electrode to the capacitor.

Hi everyone,

How are you, I am Karen from Kingtronics International company. Are you looking for trimming potentiometer? I am sure Kingtronics is your best choice!

Kingtronics are very professional in trimming potentiometer, items like 3296 3006 3386 3590...these are very famous!

We have the competitive price in the market,fast delivery and high quality,we also cross the famous brand for you.
If you need trimming potentiomet,pls send your requirement to sales2(at)kingtronics.com.
Pls check SGS and Cross reference on below links:

SGS: http://www.kingtronics.com/pdf/sgs.pdf
Cross reference: http://www.kingtronics.com/pdf/cross-reference.pdf

Select a higher voltage rated part (30% to 70%) than the maximum line voltage. In the case of low impedance circuits, the tantalum capacitor is likely to be stressed by current surges. In circuits which undergo rapid charge/discharge, a protective resistor of 1.0 ohm per applied volt is recommended. If this is impossible, a voltage-derating factor of up to 70% is recommended. A combination of tantalum capacitors can be connected in series to increase working voltage of the equivalent capacitor. In many power supply topologies where the di/dt through the capacitor is limited, such as most implementations of buck (current mode), forward converter and flyback, the requirement for series resistance is decreased to 0.1 ohm per applied volt. This level of resistance is used as a basis for the series resistance variable in a 1%/1000 hours 60% confidence level reference. This is what steady state life tests are based on. Certain test circuits such as ICT are likely to subject the capacitor to large voltage and current transients, which will not be seen in normal use. This should be taken into account when considering the capacitors rated voltage.