Control device for battery charging AC generator

Claim 2

A control device for controlling a battery charging AC generator including a field coil and having a full-wave rectifier means connected thereto for rectifying an AC output voltage from said AC generator and having a storage battery connected to said full-wave rectifier means for being charged therefrom; said control device comprising: a voltage regulating means connected to said battery and through said full-wave rectifying means to said AC generator for controlling said output from said AC generator to be below a predetermined magnitude, said voltage regulating means comprising: an output transistor serially connected to said field coil for causing a field current to flow therethrough for controlling said output voltage from said AC generator, a control transistor connected through said full-wave rectifying means to said AC generator and connected to said output transistor for controlling the conduction state of said output transistor, a diode-resistor network means connected to said field coil and connected to the collectors of said output transistor and said control transistor for providing an output when a high voltage above said predetermined magnitude occurs from an interlayer short-circuit in said field coil, and a current limiting transistor connected to said output transistor and said diode-resistor network means and said control transistor and having a base current supplied thereby by said output of said diode-resistor network means when the collector-to-emitter voltages of said output and control transistors reach said predetermined magnitude, wherein said current limiting transistor conducts, thereby causing said output transistor to not conduct.

Claim 3

A control device for controlling a battery charging AC generator as claimed in claim 1, wherein one end of said field coil which is remotely located from said output transistor is connected to said storage battery on the negative side of said battery and wherein all of said transistors are of the PNP type.

Claim 4

A control device for controlling a battery charging AC generator as claimed in claim 2, wherein collector electrodes of said control and current limiting transistors are both connected to a base electrode of said output transistor, and wherein said current limiting transistor has a diode forwardly connected in series with its base electrode, and wherein emitter electrodes of said control and current limiting transistors are both connected to an emitter electrode of said output transistor.

Claim 5

A control device for controlling a battery charging AC generator as claimed in claim 1, wherein one end of said field coil which is remotely located from said output transistor is connected to said storage battery on the positive side of said battery and wherein all of said transistors are of the NPN type.

Claim 6

A control device for controlling a battery charging AC generator as claimed in claim 4, wherein collector electrodes of said control and current limiting transistors are both connected to a base electrode of said output transistor, and wherein said current limiting transistor has a diode forwardly connected in series with its base electrode, and wherein emitter electrodes of said control and current limiting transistors are both connected to an emitter electrode of said output transistor.

Claim 7

A control device for charging a battery charging AC generator as claimed in claim 1, further comprising a driving transistor connected between said control transistor and said output transistor and being controlled by said control transistor, whereby said control transistor controls the conduction state of said output transistor through said driving transistor.

Claim 8

A control device for controlling a battery charging AC generator as claimed in claim 1, wherein said output transistor has its base electrode connected to collector electrodes of said control and current limiting transistors, said control transistor has a diode forwardly connected in series with its base electrode, and said output transistor has one of either its collector electrode and emitter electrode connected to emitter electrodes of said control and current limiting transistors, the other electrode of either said collector electrode and emitter electrode of said output transistor and the collector electrode of said control transistor respectively have forwardly connected diodes in series therewith, said three diodes connected together such that, when a collector-to-emitter voltage of said output transistor reaches the sum of a base-to-emitter voltage of said current limiting transistor and a forward voltage drop across said diode in series with said base of said control transistor, said current limiting transistor conducts so as to open said output transistor.

Claim 9

A control device for controlling a battery charging AC generator including a field coil and having a full-wave rectifier means connected thereto for rectifying an AC output voltage from said AC generator and having a storage battery connected to said full-wave rectifier means for being charged therefrom; said control device comprising: a voltage regulating means connected to said battery and through said full-wave rectifying means to said AC generator for controlling said output from said AC generator to be below a predetermined magnitude, said voltage regulating means comprising: an output transistor serially connected to said field coil to cause a field current to flow therethrough for controlling said output voltage from said AC generator, a control transistor connected through said full-wave rectifying means to said AC generator and connected to said output transistor for controlling the conduction state of said output transistor, and a current limiting transistor connected to said output transistor for sensing the collector-to-emitter voltage of said output transistor wherein when said control transistor is nonconducting, said output transistor's collector-to-emitter voltage reaches a specified maximum and said current limiting transistor conducts, thereby causing said output transistor to not conduct; wherein one end of said field coil which is remotely located from said output transistor is connected to said storage battery on the negative side of said battery and wherein all of said transistors are of the PNP type; and wherein collector electrodes of said control and current limiting transistors are both connected to a base electrode of said output transistor, and wherein said current limiting transistor has a diode connected in series with its base electrode, and wherein emitter electrodes of said control and current limiting transistors are both connected to an emitter electrode of said output transistor.

Claim 10

A control device for controlling a battery charging AC generator including a field coil and having a full-wave rectifier means connected thereto for rectifying an AC output voltage from said AC generator and having a storage battery connected to said full-wave rectifier means for being charged therefrom; said control device comprising: a voltage regulating means connected to said battery and through said full-wave rectifying means to said AC generator for controlling said output from said AC generator to be below a predetermined magnitude, said voltage regulating means comprising: an output transistor serially connected to said field coil to cause a field current to flow therethrough for controlling said output voltage from said AC generator, a control transistor connected through said full-wave rectifying means to said AC generator and connected to said output transistor for controlling the conduction state of said output transistor, and a current limiting transistor connected to said output transistor for sensing the collector-to-emitter voltage of said output transistor wherein when said control transistor is nonconducting, said output transistor's collector-to-emitter voltage reaches a specified maximum and said current limiting transistor conducts, thereby causing said output transistor to not conduct; wherein one end of said field coil which is remotely located from said output transistor is connected to said storage battery on the negative side of said battery and wherein all of said transistors are of the PNP type; and wherein collector electrodes of said control and current limiting transistors are both connected to a base electrode of said output transistor, and wherein said current limiting transistor has a diode connected in series with its base electrode, and wherein emitter electrodes of said control and current limiting transistors are both connected to an emitter electrode of said output transistor.

Claim 11

A control device for controlling a battery charging AC generator including a field coil and having a full-wave rectifier means connected thereto for rectifying an AC output voltage from said AC generator and having a storage battery connected to said full-wave rectifier means for being charged therefrom; said control device comprising: a voltage regulating means connected to said battery and through said full-wave rectifying means to said AC generator for controlling said output from said AC generator to be below a predetermined magnitude, said voltage regulating means comprising: an output transistor serially connected to said field coil to cause a field current to flow therethrough for controlling said output voltage from said AC generator, a control transistor connected through said full-wave rectifying means to said AC generator and connected to said output transistor for controlling the conduction state of said output transistor, and a current limiting transistor connected to said output transistor for sensing the collector-to emitter voltage of said output transistor wherein when said control transistor is nonconducting, said output transistor's collector-to-emitter voltage reaches a specified maximum and said current limiting transistor conducts, thereby causing said output transistor to not conduct; wherein one end of said field coil which is remotely located from said output transistor is connected to said storage battery on the positive side of said battery and wherein all of said transistors are of the NPN type; and wherein collector electrodes of said control and current limiting transistors are both connected to a base electrode of said output transistor, and wherein said current limiting transistor has a diode forwardly connected in series with this base electrode, and wherein emitter electrodes of said control and current limiting transistors are both connected to an emitter electrode of said output transistor.

Claim 12

A control device for controlling a battery charging AC generator including a field coil and having a full-wave rectifier means connected thereto for rectifying an AC output voltage from said AC generator and having a storage battery connected to said full-wave rectifier means for being charged therefrom; said control device comprising: a voltage regulating means connected to said battery and through said full-wave rectifying means to said AC generator for controlling said output from said AC generator to be below a predetermined magnitude, said voltage regulating means comprising: an output transistor serially connected to said field coil to cause a field current to flow therethrough for controlling said output voltage from said AC generator, a control transistor connected through said full-wave rectifying means to said AC generator and connected to said output transistor for controlling the conduction state of said output transistor, and a current limiting transistor connected to said output transistor for sensing the collector-to emitter voltage of said output transistor wherein when said control transistor is nonconducting, said output transistor's collector-to-emitter voltage reaches a specified maximum and said current limiting transistor conducts, thereby causing said output transistor to not conduct; wherein one end of said field coil which is remotely located from said output transistor is connected to said storage battery on the positive side of said battery and wherein all of said transistors are of the NPN type; and wherein collector electrodes of said control and current limiting transistors are both connected to a base electrode of said output transistor, and wherein said current limiting transistor has a diode forwardly connected in series with this base electrode, and wherein emitter electrodes of said control and current limiting transistors are both connected to an emitter electrode of said output transistor.

Claim 13

A control device for controlling a battery charging AC generator including a field coil and having a full-wave rectifier means connected thereto for rectifying an AC output voltage from said AC generator and having a storage battery connected to said full-wave rectifier means for being charged therefrom; said control device comprising: a voltage regulating means connected to said battery and through said full-wave rectifying means to said AC generator for controlling said output from said AC generator to be below a predetermined magnitude, said voltage regulating means comprising: an output transistor serially connected to said field coil to cause a field current to flow therethrough for controlling said output voltage from said AC generator, a control transistor connected through said full-wave rectifying means to said AC generator and connected to said output transistor for controlling the conduction state of said output transistor, and a current limiting transistor connected to said output transistor for sensing the collector-to-emitter voltage of said output transistor wherein when said control transistor is nonconducting, said output transistor's collector-to-emitter voltage reaches a specified maximum and said current limiting transistor conducts, thereby causing said output transistor to not conduct; wherein said output transistor has its base electrode connected to collector electrodes of said control and current limiting transistors, said control transistor has a diode forwardly connected in series with this base electrode, and said output transistor has one of either its collector electrode and emitter electrode connected to emitter electrodes of said control and current limiting transistors, the other electrode of said collector electrode and emitter electrode of said output transistor and the collector electrode of said control transistor respectively have forwardly connected diodes in series therewith, said three diodes connected together such that, when a collector-to-emitter voltage of said output transistor reaches the sum of a base-to-emitter voltage of said current limiting transistor and a forward voltage drop across said diode in series with said base of said control transistor, said current limiting transistor conducts so as to open said output transistor.

Claim 14

A control device for controlling a battery charging AC generator including a field coil and having a full-wave rectifier means connected thereto for rectifying an AC output voltage from said AC generator and having a storage battery connected to said full-wave rectifier means for being charged therefrom; said control device comprising: a voltage regulating means connected to said battery and through said full-wave rectifying means to said AC generator for controlling said output from said AC generator to be below a predetermined magnitude, said voltage regulating means comprising: an output transistor serially connected to said field coil to cause a field current to flow therethrough for controlling said output voltage from said AC generator, a control transistor connected through said full-wave rectifying means to said AC generator and connected to said output transistor for controlling the conduction state of said output transistor, and a current limiting transistor connected to said output transistor for sensing the collector-to-emitter voltage of said output transistor wherein when said control transistor is nonconducting, said output transistor's collector-to-emitter voltage reaches a specified maximum and said current limiting transistor conducts, thereby causing said output transistor to not conduct; wherein said output transistor has its base electrode connected to collector electrodes of said control and current limiting transistors, said control transistor has a diode forwardly connected in series with this base electrode, and said output transistor has one of either its collector electrode and emitter electrode connected to emitter electrodes of said control and current limiting transistors, the other electrode of said collector electrode and emitter electrode of said output transistor and the collector electrode of said control transistor respectively have forwardly connected diodes in series therewith, said three diodes connected together such that, when a collector-to-emitter voltage of said output transistor reaches the sum of a base-to-emitter voltage of said current limiting transistor and a forward voltage drop across said diode in series with said base of said control transistor, said current limiting transistor conducts so as to open said output transistor.