Solid state 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 Switching Technologies:
Example Projects:
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