Alternator regulator protection circuit

Details Alternator regulator protection circuit Alternator regulator protection circuit

1985-01-28

1987-06-02

Hickey, R. J.

Electricity: single generator systems

Automatic control of generator or driving means

Voltage of generator or circuit supplied

322 99, 320 64, 361 20, H02J 714, H02H 706

Patent

active

046707050

ABSTRACT:
The circuit utilizes combinational logic and latching circuits to prevent damage to the regulator or to the battery of an automotive ignition system due to a serious fault such as the ignition being turned "on" but the engine/alternator not rotating. A fixed duty cycle control signal is added to the control signal for the field excitation current only when a serious fault is detected, thus limiting battery drain and excessive temperature in the regulator module but not shutting the whole system down. The system thus provides the desirable "limp-home" capability.

REFERENCES:
patent: 4233525 (1980-11-01), Takahashi et al.
patent: 4268787 (1981-05-01), Sloan
patent: 4308492 (1981-12-01), Mori et al.
patent: 4322630 (1982-03-01), Mezera et al.
patent: 4368417 (1983-01-01), Matsuyama
patent: 4471235 (1984-09-01), Sakhuja et al.
patent: 4477766 (1984-10-01), Akita et al.
patent: 4536697 (1985-08-01), Johnston et al.
patent: 4543521 (1985-09-01), Morishita et al.

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