Title:
【発明の名称】電流制限器
Document Type and Number:
Japanese Patent JP2531953
Kind Code:
B2
Abstract:
The switching driving device with current limitation, operating reliably even with high switching frequencies, comprises a drive stage (10) receiving at the input a timing clock signal (MCl) at a preset frequency and generating at the output a drive signal synchronized with the timing clock signal, a power element (11) connected at the input to the drive stage, receiving therefrom the drive signal and generating a load supply signal, a load (14) fed by the power element, and a current sensor (16,17) generating an overload signal when the current in the load has reached a preset threshold. The current limitation is obtained through a memory element (21) connected to the current sensor (16,17) and disabling the drive stage (10) in the presence of the overload signal. In order to obtain a reliable operation, in the presence of the overload signal the drive stage is controlled at a switching frequency which is lower than the preset frequency of the timing clock signal.
Inventors:
KARURO CHIINI
KURAUDEIO DEIATSUJI
JUZETSUPE GATSUTAUAARI
KURAUDEIO DEIATSUJI
JUZETSUPE GATSUTAUAARI
Application Number:
JP9722687A
Publication Date:
September 04, 1996
Filing Date:
April 20, 1987
Export Citation:
Assignee:
ETSUSE JI ETSUSE TOMUSON MIKUROERETSUTORONIKA SPA
International Classes:
H01H47/32; H02H3/087; H03K17/08; H02M3/155; (IPC1-7): H02M3/155
Domestic Patent References:
| JP55100065A | ||||
| JP61171484U |
Attorney, Agent or Firm:
Fukami Hisaro (2 outside)