Solid State Pulse Generators
Description
Solid state pulse generators or modulators are typically developed for driving pulsed high voltage loads. The biggest advantage of solid state switching is that the switching devices can have a virtually unlimited lifetime. While other high power switches, such as thyratrons and spark gaps, have characteristics that limit the lifetime to some finite level (typically the heater/reservoir life for thyratrons and electrode erosion or insulator coating for spark gaps), solid state devices don’t have similar equivalent limiters (wire bond fatigue can limit lifetime in some cases but with suitable device de-rating, even that can be managed to still provide very long lifetimes). As a result, the maintenance costs of such a system can be lower than that of a design using other switch devices. Unfortunately, the peak power handling capability of solid state devices is usually not as high as that obtainable from other switches. As a result, series and/or parallel arrays of devices are often required to meet the overall switching requirements.
Solid State Pulse Generators
Specifications |
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| Type Of Service: | Engineering design |
Features
SCRs (with and without magnetic assist)
Power MOSFETs
GTOs (Gate Turn-Off Thyristors)
IGBTs (Insulated Gate Bi-Polar Transistors)
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Frequently Asked Questions
Solid state pulse generators are typically developed for driving pulsed high voltage loads.
The peak power handling capability of solid state devices is usually not as high as that obtainable from other switches, so series and/or parallel arrays of devices are often required to meet the overall switching requirements.
The maintenance costs of a system using solid state devices can be lower than that of a design using other switch devices.
The types of switches used in solid state pulse generators are SCRs (with and without magnetic assist), Power MOSFETs, GTOs (Gate Turn-Off Thyristors), and IGBTs (Insulated Gate Bi-Polar Transistors).
The biggest advantage of solid state switching is that the switching devices can have a virtually unlimited lifetime.