Electrical transmission or interconnection systems – Superimposed unlike currents – Different voltages
Patent
1997-04-01
1998-08-25
Elms, Richard T.
Electrical transmission or interconnection systems
Superimposed unlike currents
Different voltages
388819, H02J 100
Patent
active
057985731
ABSTRACT:
A power supply circuit for a control circuit of a motor having an armature, includes a first power supply branch having a series combination of a first resistor, a first diode and a Zener diode connected between a supply of power and a reference potential, with a first junction between the first diode and the Zener diode constituting an output of the first power supply branch which supplies a fixed first current; and a power supply second branch having a series combination of a second resistor, a second diode and a capacitive element connected between the armature of the motor and the reference potential, such that a variable second current in correspondence with current provided by the armature of the motor is provided at a second junction between the second diode and the capacitive circuit, and combined with the first current thereof for supply to the control circuit.
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Elms Richard T.
KB Electronics Inc.
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