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A gas discharge tube or GDT, is a sealed, glass-enclosed device that contains an inert gas mixture trapped between two electrodes. When a voltage greater than the GDT\'s rating is exceeded, the increased voltage ionizes the gas allowing it to conduct electricity and divert the excess voltage to ground.
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Select a bridge rectifier by reverse voltage, capacitor charging current, startup surge and cooling. Work through a stated DC voltage and ripple example.
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Compare RC, crystal and MEMS oscillator circuits. Check ppm, jitter, load capacitance, startup margin and output compatibility before choosing a clock source.
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