Title:
CONSTANT VOLTAGE DEVICE
Document Type and Number:
Japanese Patent JP3662085
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To efficiently consume electric power energy and to prolong the service life of illuminator by outputting a command signal while calculating a correction value by comparing a detected voltage from a feedback circuit with a set voltage.
SOLUTION: Based on a primary voltage applied to a primary winding wire 3a at a double winding transformer 3, a secondary voltage is induced at secondary winding wires 3b and 3c. An output voltage between the secondary winding wires 3b and 3c is detected by a feedback circuit 4, and that detected value is outputted to a control circuit 5. On the other hand, the set voltage set by an arbitrary output voltage setting circuit 6 is set to any arbitrary value and compared with the detected value from the feedback circuit 4 at the control circuit 5 and the correction value is calculated. When the detected voltage from the feedback circuit 4 is higher than the set voltage, for example, the command signal is outputted to an electronic control motor 2 so as to drop the voltage to be applied to the primary winding wire 3a, and a sliding element 1b of motor-driven slider 1 is operated upward.
Inventors:
Takashi Kagaya
Application Number:
JP1326497A
Publication Date:
June 22, 2005
Filing Date:
January 09, 1997
Export Citation:
Assignee:
Shin Nihon Kogyo Co., Ltd.
Comcom inc.
Comcom inc.
International Classes:
G05F1/14; G05F1/24; G05F1/247; H02M5/12; (IPC1-7): G05F1/14; G05F1/24; G05F1/247; H02M5/12
Domestic Patent References:
| JP2070217U | ||||
| JP28004442Y1 |
Attorney, Agent or Firm:
Seishiro Suzuki