Solenoid valve driving device

Details Solenoid valve driving device Solenoid valve driving device

1997-11-28

1999-04-06

Fleming, Fritz

Electricity: electrical systems and devices

Control circuits for electromagnetic devices

Including means for using, or compensating for, the induced...

361152, 361191, H01H 4702

Patent

active

058926500

ABSTRACT:
A solenoid valve driving device includes a bypassing current path of which one end is connected to a point between a first switching device and a first solenoid valve and another end is connected to a point between a second switching device and a second solenoid valve, and an element disposed in the bypassing current path and having a characteristic that causes current to flow from the first switching device side to a second switching device side. By adopting the above described constitution, through current generated when the first switching device is switched from an OFF-state to an ON-state during duty control of the first switching device can be suppressed by the inductance of the second solenoid valve. In this way, one solenoid valve among a pair of the first and second solenoid valves, which is not operated, has a function of suppressing the through current.

REFERENCES:
patent: 4950974 (1990-08-01), Pagano
patent: 5040514 (1991-08-01), Kubach
patent: 5347421 (1994-09-01), Alexanian
patent: 5552954 (1996-09-01), Glehr
patent: 5793127 (1998-08-01), Qualich

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