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    Home » » Things You Should Know A High Voltage Contactor

    Things You Should Know A High Voltage Contactor

    Posted by Unknown Posted on 10:48 AM with No comments
    By Robert Hughes


    At the end of the 19th century, advances in the semiconductor technology introduced solid state switches. These type of switches replaced the older models that were being used before. Such models included thyratrons, ignitrons, and spark gaps. Before the invention, electronics used older drivers which have since been replaced by TTL input controls that have dramatically improved performance and efficiency. A high voltage contactor has been used a lot in the past few years and there are a lot of details that make them stand out.

    There is a lower input power loss compared to another type of switches. This is attributed to the use of MOSFET technology. This technology dramatically decreases the power losses. This power loss can be attributed to the total charge, voltage and the frequency of the switch. When the gate charge is small it means that the input loss will also be minimal. This is totally different from switches that use bipolar transistors where input power losses are very high.

    The contactors are reliable when it comes to high current applications. Even when short circuited, they guarantee steady hard saturation which is very necessary when running high current applications such as medical test equipment. The fact that they are able to switch faster also make them efficient for use in these applications. The switching speeds generally increase the efficiency of the equipment.

    It is possible to easily customize these switches in a number of ways. This may include the housing and footprint. The sensitivity can also be customized as per customer needs. This customization helps to suit applications where the switches are being used. They are also easy to use due to the galvanic isolation with TTL control.

    When designing the switches, one important factor considered is prevention against voltage reversal and overload. Chances of voltage reversal are very low with these switches. This prevents cases that would have been otherwise catastrophic. There are different technologies used when making the switches including MOSFET and SCR. These ensure safety and security whenever the switch is in use. Especially during switching.

    Little current is required during switching which is essential in preventing heating, especially when handling high loads. This is mostly because the contactors are power controlled. Other contactors require a fair amount of current to switch. This causes a lot of heating when handling a lot of power. This may cause such switches to operate on linear mode because the level of the drain current affects the gate-source voltage. This is not the case with the power switches, level of drain current has no effect on gate-source voltage.

    These switches guarantee faster switching. The speed advantage of these contactors makes them a better choice for everyday use. They are able to handle high frequencies due to the thin oxide layer used when making the transistors. This layer prevents the use of current when switching. Most switches especially those that use bipolar transistors take much time when switching.

    These switches are suitable for both low-power applications and current applications. Their unique features and technology help achieve great results with very minimal risks. They are durable and can survive millions of cycles. The above features are just a few of many that make the switches suitable for day-to-day use. The technology also has a number of limitations. More developments are still being made to ensure that these limitations are dealt with to ensure efficiency in switching.




    About the Author:

    You can get fantastic tips on how to select a high voltage contactor supplier and more information about a reputable supplier at http://www.rossengineeringcorp.com/products/control/single-pole-hv-vacuum-contactors/hbf-haf-hbdcf-series.html now.


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