Single-chip ultrahigh voltage constant current circuit

The utility model provides a single-chip ultrahigh voltage constant current circuit. The single-chip ultrahigh voltage constant current circuit comprises a high-voltage N-type DMOS (double-diffusion metal-oxide-semiconductor) tube, a BJT (bipolar junction transistor) triode, a first resistor having...

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Bibliographic Details
Main Author ZHU YUELIN
Format Patent
LanguageChinese
English
Published 15.08.2012
Subjects
CONTROLLING
PHYSICS
REGULATING
SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
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Summary:The utility model provides a single-chip ultrahigh voltage constant current circuit. The single-chip ultrahigh voltage constant current circuit comprises a high-voltage N-type DMOS (double-diffusion metal-oxide-semiconductor) tube, a BJT (bipolar junction transistor) triode, a first resistor having two ends respectively connected with a grid electrode and a drain electrode of the high-voltage N-type DMOS tube, a second resistor having two ends respectively connected with a source electrode of the high-voltage N-type DMOS tube and a base electrode of the BJT triode, a third resistor having two ends respectively connected with the source electrode of the high-voltage N-type DMOS tube and an emitting electrode of the BJT triode, and a voltage-stabilizing diode having the cathode connected with a collector of the BJT triode, and an anode connected with the emitting electrode of the BJT triode, the grid of the high-voltage N-type DMOS tube is connected with the collector of the BJT triode. The single-chip ultrahig
Bibliography:Application Number: CN20112550833U