RKT-3313 3mm surface mounted SMD trimming potentiometers

RKT-3314 Surface Mount 4mm Square single-turn cermet trimming potentiometers

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Kt Kingtronics Sharing More Information about Super capacitor with You

 Super capacitor is an electrochemical capacitor with the ability to store more energy than conventional capacitors. Super capacitors can charge and provide energy faster than batteries. The increasing application of instantaneous standby power supply promotes the demand for super capacitor.

The remarkable advantage of super capacitor is that it can cycle thousands of times before aging, while the battery can only cycle hundreds of times.
The latest development of super capacitor has introduced lithium-ion hybrid capacitors which can be charged to high voltage (up to 4V), which has less self-discharge and high energy density. The disadvantage of these super capacitors is that they cannot discharge to less than 2.2V, otherwise they will be damaged.

The composition of super capacitors makes their self-discharge rate significantly higher than that of battery. The higher the working temperature of super capacitor, the higher the charging voltage, the faster the aging; The capacitance of super capacitor will decrease and the equivalent series resistance (ESR) will increase. This means that the super capacitor can provide less energy for the application. ESR of capacitor increases power loss of the system.

The temperature is only 10% higher, the life of the super capacitor can be reduced by half. In addition, it is usually used to charge the super capacitor to a voltage below the nominal voltage to increase its life.

Since the maximum voltage of the super capacitor charging is between 2.7V and 3V, it is necessary to connect several super capacitors in series for most applications. Therefore, the super capacitor must be balanced; Otherwise, one unit may charge more than another, leading to the aging of unequal capacitors, reducing the capacity of capacitor banks to provide the energy required for application.

The methods used to balance the super capacitor include: passive balance of resistor string, switch resistor, zener diode and active balance. The first three methods can cause power loss in resistors, and the fourth is the most effective but also the most expensive.

When super capacitors are used for standby power applications, their capacitors and ESRs must be monitored to ensure that the minimum energy required for the application can be provided.

Super Capacitor applications: RAM; Detonator; car recorder; smart meter; Vacuum switch; digital camera; motor drive; clock circuit; UPS; toy; program-controlled switch; etc.

Kt Kingtronics Super Capacitor DKT-DZ-2.7V-3V-Radial-Snap-in-Screw-Super-Capacitors

Kt Kingtronics Super Capacitor DKT-DA-5.5V-Coin-Type-Super-Capacitors
Kt Kingtronics Super Capacitor DKT-DM-Combined-Type-Capacitors
Kt Kingtronics Super Capacitor DKT-DY-Combined-Type-Super-Capacitors

Kt Kingtronics-Stay Cool and Hydrated This Summer

An extreme heat wave is coming, how to do we can stay cool and hydrated ?

As you know, make sure you’re drinking enough water or milk.

Here sharing some ways as below, let’s stay healthy and happy during this Summer !

*Wear casual and oversized clothes. Better choose white clothing instead of black one
穿寬鬆和輕便衣服，最好選擇反光的白色衣物（黑色更吸光，適合天冷時穿）

*Wear sunscreen & hat outdoor, also sunglasses to protect your eyes
常擦防曬乳、出門攜帶帽子＆到戶外戴太陽眼鏡以保護眼睛

*Take the shower with cold water
多用冷水淋浴

*Bring one towel with you, wet your towel and wipe you face and neck anytime anywhere.
隨身攜帶一條毛巾，隨時可以用冷水浸泡後擦拭臉部和頸部。

*choose a thinner blanket with air permeability 
選擇薄和透氣性好的棉被單（華人夏季有睡涼席和涼牀的傳統，有類似之處）

*try to keeping the windows open and use the fan with some breeze.
注意開窗通風以及使用風扇等

*on the other hand, close window and curtains drawn if it’s hotter outside than inside.
如白天室外陽光太強，盡量關上窗和拉上窗簾，以防室內曝曬溫度升高

*having more fruits and vegetables contain more hydrate such as watermelon and cucumber, watch out for is excessive alcohol as it can increase the risk of dehydration.
多吃西瓜、小黃瓜這類含水分較多的水果和蔬菜。盡量少喝含糖和酒精飲料。

參考來源: https://www.bbc.com/news/health-49112807
https://www.bbc.com/zhongwen/trad/science-48789636

Kt Kingtronics Order Plan before Chinese Spring Festival

As you know every year approaching the Christmas season will get busy with factories, so does Chinese New Year time.

The coming Chinese New Year also known as Lunar New Year or Spring Festival.
This is a time for family reunion, and is considered the most important part in the Chinese New Year celebration.

In 2019, the festivity will be on 5th-7th Feb., our factory will have holidays from late January till mid-February.
The production lead time might be longer once place order within or after CNY.

Thus please don’t hesitate to advise us the order confirmation soon, and arrange production without delay. : )

Good day !

More detail:http://kingtronics.com/