Device for indicating the rate of charge in an AC generator
AssigneeToyota Jidosha Kogyo Kabushiki Kaisha
InventorTakayoshi Masutani
Life of this patent
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Abstract
A device for indicating the rate of charge in an AC generator with a contactless type voltage regulator having an exciting diode for supplying electric current to a field coil of the AC generator. The device includes a relay coil connected to an output end of the exciting diode, a relay contact responsive to an excitation of the relay coil and a charge warning means responsive to the relay contact thereby preventing malfunction of the charge warning means.
Claims5
A device for indicating the rate of charge in an AC generator for a vehicle comprising an exciting diode for feeding electric current to a field coil and a contactless regulator, and whose output end is connected to a battery mounted on the vehicle for charging, characterized in that:
- a relay coil is coupled to a junction of the exciting diode, a field coil and one end of an electric power switch, the other end of which is connected to said battery;
- an anode end of at least one Zener diode is connected to the other end of said relay coil in series;
- a normally open contact closing through the excitation of said relay coil is provided;
- and
- the device for indicating the rate of charge is connected to said battery through said normally open contact.
A device for indicating the rate of charge in an AC generator for a vehicle characterized by:
- a three-phase wired stator coil;
- a field coil rotatably disposed in opposed relation to said stator coil;
- a rectifier connected to said stator coil for full-wave rectification thereof;
- an exciting diode provided in parallel with said rectifier and whose output end is connected to one end of said field coil;
- a contactless regulator for detecting voltage generated in said stator coil and turning on and off the other end of said field coil so that said voltage can be set at a predetermined value;
- a battery connected to said rectifier;
- an ignition switch, one end of which is connected to said battery;
- a relay coil connected at one end to a junction of said exciting diode with said field coil;
- a normally open contact closing through the excitation by said relay coil;
- a charge warning lamp connected to said battery through said ignition switch and said normally open contact;
- an initially exciting resistance connected to a junction of said exciting diode with said field coil and an other end of said ignition switch;
- a reverse-current preventive diode connected to said initially exciting resistance in series and in a manner such that said field coil is on the cathode side of said diode;
- and
- at least one Zener diode connected to the other end of said relay coil in series and in a manner that said relay coil is on the anode side of said Zener diode.
Dependencies are inferred from the claim text.