Squaring circuit

Details Squaring circuit Squaring circuit

1989-01-25

1990-10-09

Jennings, Derek S.

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific current responsive fault sensor

361101, H04H 308

Patent

active

049624393

ABSTRACT:
A squaring circuit and an i.sup.2 t circuit utilizing the squaring circuit. The squaring circuit comprises a voltage-controlled oscillator and a frequency/current converter which are connected to one another, with the input voltage signal being supplied to the voltage-controlled oscillator and to the frequency/current converter on the one hand, and with the output voltage signal being tappable at an RC network connected to the output of the frequency/current converter on the other hand. The value of the output voltage is proportional to the square of the value of the input voltage. With this squaring circuit, it is possible to construct an i.sup.2 t protective circuit for protection of an electrical consumer from overload.

REFERENCES:
patent: 3539931 (1968-02-01), Joure
patent: 4246622 (1981-01-01), Hosoda et al.
patent: 4583004 (1986-04-01), Yearsin

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