High-voltage diode for voltage multiplier circuits in industrial applications
A semiconductor device designed to allow current flow in one direction while blocking reverse current at high voltage levels, specifically engineered for voltage multiplier circuits that generate DC voltages higher than the input AC voltage through cascaded rectification stages.
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High-voltage diodes have thicker depletion regions and specialized construction to withstand reverse voltages from 10kV to over 100kV, compared to standard diodes typically rated below 1kV. They feature graded junctions, field plates, and passivation layers to prevent voltage breakdown.
They enable generation of high DC voltages from lower AC inputs without bulky transformers, essential for X-ray equipment, electrostatic precipitators, laser power supplies, and particle accelerators where compact high-voltage sources are required.
Increased temperature reduces breakdown voltage (negative temperature coefficient) and increases leakage current. Silicon carbide diodes maintain better high-temperature performance than silicon diodes due to wider bandgap.
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