CHOPPER NOISE PREVENTION CIRCUIT

PURPOSE:To prevent the occurrence of noise from an especially long load drive line between a chopper circuit and a load, by connecting a common mode choke filter between the chopper circuit and the load. CONSTITUTION:A transistor 3 of a chopper circuit 1 is driven by the control pulse from a control...

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Bibliographic Details
Main Authors TSUKAHARA HITOSHI, IMAI IWAO
Format Patent
LanguageEnglish
Published 14.11.1987
Subjects
APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS
CONTROL OR REGULATION THEREOF
CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER
CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
ELECTRICITY
GENERATION
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Summary:PURPOSE:To prevent the occurrence of noise from an especially long load drive line between a chopper circuit and a load, by connecting a common mode choke filter between the chopper circuit and the load. CONSTITUTION:A transistor 3 of a chopper circuit 1 is driven by the control pulse from a control portion 5 and interrupted. This interruption signal of the transistor 3 drives a load 13 through a common mode choke filter 9 and a load drive line 11. As a result, as this interruption signal of the transistor 3 does not directly interrupt and drive the load 13, but drives through the common mode choke filter 9, the common mode voltage waveform, i.e., the interruption signal of the transistor 3, gets dull. Thus the chopper noise is prevented from occurring to the load drive line 11 as the common mode high frequency noise.
Bibliography:Application Number: JP19860103877