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Gas Discharge Tubes Slide 5

Some of the key GDT characteristics are, Rate of overvoltage transients determines sparkover value, the slower the transient the lower the sparkover value and the faster the transient the higher the sparkover value. GDTs have a high off-state impedance – greater than 10 GΩ. GDTs create little signal distortion due to the extremely low capacitance, less than 3 pF. The high current handling capability makes them insensitive to high rates of current rise.

PTM Published on: 2013-06-20