Single-wire-connected high-sensitivity dual-mode a.c./d.c. turn-

Details Single-wire-connected high-sensitivity dual-mode a.c./d.c. turn- Single-wire-connected high-sensitivity dual-mode a.c./d.c. turn-

1996-05-14

1998-04-28

Stephan, Steven L.

Electricity: single generator systems

Automatic control of generator or driving means

Voltage of generator or circuit supplied

322 8, 322 25, H02P 900

Patent

active

057449414

ABSTRACT:
A turn-on/turn-off stage for an electronic voltage regulator operates (i) between a battery voltage and a ground, and (ii) responsively to a control signal received from an alternator, in order to (1) turn on the voltage regulator, enabling regulation of the alternator, and also to (2) turn off the voltage regulator, presenting a high impedance to a battery. For an "A"-Type Voltage Regulator ("B"-Type Voltage Regulator) the stage includes, in electrical parallel between the battery voltage and the ground, (1) a first resistor in electrical series with (2) a "two-legged" circuit. The (2) "two-legged" circuit includes (2a) a first leg consisting of a first diode forward-biased to the battery voltage in electrical series with (a second diode forward-biased to the battery voltage in electrical series with) a second resistor, in electrical parallel with (2b) a second leg consisting of a second (third) diode forward-biased to the battery voltage and a capacitor. The control signal, preferably derived directly from an alternator stator winding, is received by the two-legged circuit between its first (second) diode and its second resistor. A third resistor is connected to the two-legged circuit between its second (third) diode and its capacitor. A transistor amplifier is connected in electrical series between this third resistor and ground, and serves to amplify a voltage stored upon the capacitor in order to (i) turn on the rest of the voltage regulator, enabling regulation of the alternator, or, alternatively, to (ii) turn off the rest of the voltage regulator, presenting a high impedance of greater than 0.1 megohm to a battery.

REFERENCES:
patent: 3599079 (1971-08-01), Ansbro et al.
patent: 3602797 (1971-08-01), Bleher
patent: 4129819 (1978-12-01), Arendt
patent: 5202811 (1993-04-01), Minks
patent: 5245271 (1993-09-01), Simmons
patent: 5325044 (1994-06-01), Bartol

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