Title:
POWER SOURCE FOR AUTOMOTIVE ELECTRONIC DEVICE
Document Type and Number:
Japanese Patent JPS57206231
Kind Code:
A
Abstract:
PCT No. PCT/JP82/00223 Sec. 371 Date Feb. 1, 1983 Sec. 102(e) Date Feb. 1, 1983 PCT Filed Jun. 9, 1982 PCT Pub. No. WO82/04487 PCT Pub. Date Dec. 23, 1982.Herein disclosed is a vehicular power source system which uses as its load a memory-arithmetic circuit (5) such as a microcomputer. An electric power is supplied to the load (5) through a diode (6) and a constant voltage circuit (4), when a switch (2) for running the vehicle is open, but a booster (3) is operated to supply the power when the switch (2) is turned on. The voltage drop of a battery (1), which may be caused during the running operation of the vehicle, is not transmitted to the load (5), but a constant voltage is supplied to the load (5) at all times so that the storage data of the memory unit (5) is always held.
Inventors:
TOKUYAMA KEIICHI
NAITOU SHIYOUTAROU
WATANABE SHIZUHISA
NAITOU SHIYOUTAROU
WATANABE SHIZUHISA
Application Number:
JP8962181A
Publication Date:
December 17, 1982
Filing Date:
June 12, 1981
Export Citation:
Assignee:
HITACHI LTD
International Classes:
B60R16/02; G05F1/563; H02J1/00; H02J7/00; H02J7/34; H02M3/28; H02M3/335; H02M3/338; (IPC1-7): B60R16/02; H02J1/00; H02M3/04
Domestic Patent References:
| JPS50116303U | 1975-09-22 | |||
| JPS54143027A | 1979-11-07 |