Contact-free operating electronic switchgear

Details Contact-free operating electronic switchgear Contact-free operating electronic switchgear

1988-07-07

1989-11-07

Shoop, Jr., William M.

Electrical transmission or interconnection systems

Switching systems

Condition responsive

307117, 307308, 331 65, 324207, H01H 3500, G01N 2700

Patent

active

048794740

ABSTRACT:
A contact-free operating electronic switchgear, having an oscillator capable of being externally affected, a switching amplifier with at least two operating units disposed downstream of the oscillator, an electronic switch, which can be controlled by the oscillator via the switching amplifier, and a supply circuit for the provision of the supply voltage for the oscillator and for the switching amplifier, is shown and described. In electronic switchgear operating contact-free in accordance with the invention the maximum switching frequency is considerably increased in that a control circuit is provided between the two operating units of the switching amplifier and the oscillator and that the oscillator is controlled by means of the control circuit in such a way that the oscillator also oscillates in the affected state.

REFERENCES:
patent: 4336491 (1982-06-01), Buck et al.
patent: 4731591 (1988-03-01), Weigand

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