Important Features Of A High Voltage Contactor

By Robert Hughes


When it comes to semiconductor technology, remarkable developments have been made. These developments have led to efficiency in switches and overall running if electronic devices. Solid state switches were built to replace thyratrons and spark gaps. Also use of TTL input has become common and it makes it easy to use switches. There are important factors that should be noted when it comes to a high voltage contactor.

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.

These switches are able to handle high loads without heating. Heating has been the main concern with fuses. They are voltage controlled and do not use a lot of currents. Other models require more current to switch which leads to increases in heating especially when handling high loads. Now, the drain current does not affect the voltage at the source gate. This ensures that switches never operate linearly.

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.




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