Friday, December 30, 2011

Sta-Kon Connectors and Terminals - Easier to Install and Quality Assured

!±8± Sta-Kon Connectors and Terminals - Easier to Install and Quality Assured

Sta-Kon connectors and terminals are largely used in different electronic devices to help them work in perfect order. But finding the right company where you can get the right sized Sta-Kon connectors, Sta-Kon terminals and other electronics plugs &accessories is important for the smooth functioning of your project.

For better performance of electrical systems, it is important to get the best quality connectors and terminals. Sta-Kon terminals and connectors are manufactured using the quality material to provide you maximum output. They are easy to install and come in various designs including a funneled terminal barrel entry for quick wire insertion that minimizes strand loss. This feature allows wire insertion quicker and easier. Chamfering removes wire strand "hang up" and departure upon insertion into the terminal's barrel. You know the loss of even a couple of wire strands can have bad results on electrical efficiency and resistance to mechanical strain.

For smooth functioning of device, Sta-Kon components also feature a robust, long-barrel design with brazed or overlapped seams that withstand crimping without separating (a frequent issue with butted seams on competitor products). This makes sure that your connections don´t experience problems with electrical flow.

Apart from great design, Sta-Kon terminals and connectors are properly plated and insulated to ensure maximum safety. All the parts are put through a rigorous process which cleans and smoothes the terminal of any manufacturing by-products, mainly grease, oils and sharp edges. So, when you choose Sta-Kon terminals and connectors you don't have to worry about the quality and finishing of the components.

Besides that, the proper installation of terminals and connectors is very essential to the efficient performance of an electrical system. The accurately installed connector will allow good conductivity through the termination. A poor termination results in a high resistance connection and a poor connector installation may cause damage or failure of an entire system.

To make a good termination, there are some points which you should remember. So, before the connector or terminal is installed on the conductor, remember these things. First, strip the insulation cautiously so as to avert nicking or cutting conductor strands. Strip the insulation to the appropriate length so that the conductors can be fitted fully into the connector barrel; the wire/cable should be visible in the inspection hole of the lug.

If you are looking for specific types of Sta-Kon connectors or Sta-Kon terminals, internet is the ultimate place. There are various websites available that offer broad range of Sta-Kon products that will meet all your specific needs. Today on internet, not only buying electronic hardware parts that you need is convenient and hassle-free, it can also save your money. If you have special requirement or want to place custom order, you can get information with details and pricing by calling the company, or sending an email. In addition, you can also check some standard Sta-Kon products which are ready to ship immediately.


Sta-Kon Connectors and Terminals - Easier to Install and Quality Assured

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Sunday, December 25, 2011

IGBT Test Procedures

!±8± IGBT Test Procedures

The term IGBT is an acronym for Insulated Gate Bipolar Transistor. It can be thought of as a Transistor with a MOSFET front end. It has three terminals (or leads) labeled Gate, Collector and Emitter. Some IGBT's have a built in protection diode. This diode is connected across the Collector and Emitter terminals. It is added for transient voltage protection when the IGBT is switching Inductive loads.

When these devices are considered 'suspect' it is necessary to validate their operation through a functional test procedure. One of two methods can be used:

The first test method will validate the condition of the protection diode, and the resistance of the Collector and Emitter terminals. It is not a definitive test, but will find 80% of all faulty devices. This is due to the fact that most faulty IGBT's show a low resistance or short across the Collector and Emitter terminals when the device is stressed.

To perform this test will require a DVM (Digital-Volt-Meter). Set the DVM to the Diode Test position, and confirm that the device tests as follows:

Attach the Red Lead of the DVM to the Collector Terminal and Black Lead to the Emitter Terminal. Confirm an open circuit condition.

Attach the Red Lead of the DVM to the Emitter Terminal and Black Lead to the Collector Terminal. Confirm an open circuit condition (IGBT without a protection diode). If the DVM displays a forward voltage drop of 0.2 to 0.8 VDC it means that the IGBT has a built in protection diode. Both of these results are normal test conditions and are used to confirm whether the IGBT has a protection diode, and if it does, whether it is functional or not.

The second test method will check the IGBT's functionality, by gating the device. To perform this test will require an IGBT Tester. Confirm that the device tests as follows:

Attach the IGBT Tester leads to the Gate, Collector and Emitter Terminals. Confirm that the device Conduction LED is not lit.

Press the Test Button, and confirm that the Conduction LED lights.

Reverse the Collector and Emitter leads. Do not press the Test Button. If the Conduction LED lights the IGBT has a built in protection diode. This is a normal test condition for this type of device. If the Conduction LED does not light then the IGBT does not have a built in protection diode. This is also a normal test condition for this type of device.

It is important to note that Functional test of the IGBT should always be performed when the device is out-of-circuit. In other words, it should be removed from the product and have no other electrical connections in place, other than those outlined in the Test procedure.


IGBT Test Procedures

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