Circuit for regulating the torque of ratio meters

Details Circuit for regulating the torque of ratio meters Circuit for regulating the torque of ratio meters

1984-11-28

1987-04-14

Eisenzopf, Reinhard J.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Plural inputs

324110, 324115, 324123C, 307553, G01R 700, H03K 508

Patent

active

046582118

ABSTRACT:
In order to maintain the torque of the ratio meter and the drive of amplifiers feeding it independently of the amplitudes of a sine signal voltage and a cosine signal voltage, a regulation is provided. The regulation makes use of two-quadrant voltage-controlled sources of current each of which is connected to a coil branch. Control voltage amplifiers, one connected in front of each source of current, are furthermore used. A sum-current resistor is provided to form the sum of the supply currents of two voltage-controlled sources of current. The supply currents represent the amounts of the sine signal voltage and cosine signal voltage which act on the voltage amplifiers. From the resistor for the formation of the sum of the supply currents a signal is derived which switches the amplification of the voltage amplifiers automatically in the direction of compensation.

REFERENCES:
patent: 3746978 (1973-07-01), Rogachev et al.

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