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Circuit arrangement for regulation of current and/or voltage supply for starter motor in motor vehicle, has switching unit switched parallel to series circuit from another switching unit and current limiting element i.e. resistor
Circuit arrangement for regulation of current and/or voltage supply for starter motor in motor vehicle, has switching unit switched parallel to series circuit from another switching unit and current limiting element i.e. resistor
The arrangement has a switching unit opened or closed depending on predetermined conditions. Another switching unit is switched parallel to a series circuit from the former switching unit and a current limiting element i.e. resistor (12). The latter switching unit is switched between positive and negative terminals (11a, 11b) of a charge storage i.e. starter battery (11), by the resistor and a diode (16). The switching units are designed as MOSFETs (13, 15). Driver circuits (18, 19) are fixed to each switching unit, and are controlled by a common control unit (17). One of the driver circuits is designed as a pulse-width-modulated driver. An independent claim is also included for a method for limiting initial current for a starter motor.
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