Electricity: single generator systems – Automatic control of generator or driving means – Voltage of generator or circuit supplied
Patent
1977-09-16
1979-03-06
Hickey, Robert J.
Electricity: single generator systems
Automatic control of generator or driving means
Voltage of generator or circuit supplied
322 99, 320 64, H02J 714
Patent
active
041433130
ABSTRACT:
To permit selective control of the voltage level of the on-board vehicle network as a function of battery voltage or exciter field control voltage of an automotive alternator, and continued operation of the regulator in spite of malfunction of control connections to the regulator, a voltage divide which supplies a voltage regulating element is formed with an additional tap thereon, the additional tap being connected to a current supply which supplies current to the voltage regulator to modify the voltge level of the tap supplying the control potential to the voltage regulator. The voltge regulator includes a controlled semiconductor switch which is selectively energized in accordance with voltage level at the main tap of the voltage divider with respect to a reference level. If, as customary, the control voltage is the battery voltge, a switch-over circit in the regulator changes the command voltage to the field exciter voltage in case of a break in the connection between generator and battery, control is effected with respect to a constant voltage, the break being indicated by faint illumination of the charge control indicator lamp, or discharge of a battery charge indicator instrument to supply a warning indication.
REFERENCES:
patent: 3491285 (1970-01-01), Nowakowski
patent: 3612982 (1971-10-01), Jones et al.
patent: 3855517 (1974-12-01), Allport
patent: 3942097 (1976-03-01), Itoh et al.
Hickey Robert J.
Robert & Bosch GmbH
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