초록 ▼

A circuit configuration for supplying switchable voltage and/or current to an electrical consumer, includes a switching device, a voltage source for tapping high and low supply potentials, a driver circuit for the switching device, a lead between the voltage source and the switching device, a leakag

A circuit configuration for supplying switchable voltage and/or current to an electrical consumer, includes a switching device, a voltage source for tapping high and low supply potentials, a driver circuit for the switching device, a lead between the voltage source and the switching device, a leakage inductance distributed to the lead, a measuring and evaluating circuit for detecting voltage deviations at input terminals of the driver circuit arising from current deviations in the leakage inductance of the lead and for evaluating the current deviations, and a feedback circuit for controlling feedback of the driver circuit to slow switching processes of the switching device whenever a value of a voltage change at the input terminals of the switching device exceeds a defined threshold value. A method for limiting a time deviation of a switching current of a consumer is also provided.

대표청구항 ▼

A circuit configuration for supplying switchable voltage and/or current to an electrical consumer, includes a switching device, a voltage source for tapping high and low supply potentials, a driver circuit for the switching device, a lead between the voltage source and the switching device, a leakag

A circuit configuration for supplying switchable voltage and/or current to an electrical consumer, includes a switching device, a voltage source for tapping high and low supply potentials, a driver circuit for the switching device, a lead between the voltage source and the switching device, a leakage inductance distributed to the lead, a measuring and evaluating circuit for detecting voltage deviations at input terminals of the driver circuit arising from current deviations in the leakage inductance of the lead and for evaluating the current deviations, and a feedback circuit for controlling feedback of the driver circuit to slow switching processes of the switching device whenever a value of a voltage change at the input terminals of the switching device exceeds a defined threshold value. A method for limiting a time deviation of a switching current of a consumer is also provided. tial (error) amplifier having first and second input terminals and an output terminal for generating a differential signal having a voltage level indicative of the difference between a voltage level corresponding to the voltage level of the motor supply signal and a reference voltage, the first input terminal of the differential amplifier being coupled to a voltage reference, and the second input terminal of the differential amplifier being coupled to the output terminal of the switch; and wherein the input terminal of the pulse width modulator is coupled to the output terminal of the differential amplifier, such that the pulse width modulator generates a modulated signal having a pulse width indicative of the voltage level of the differential signal to turn the switch on and off to modulate the motor supply signal and further generate a substantially constant selected voltage level to the motor supply signal. 10. A control unit as defined in claim 8, further defining a capacitorless path extending from the output of the electrical conduction switch to a