Electricity: electrical systems and devices – Control circuits for electromagnetic devices – Including means for using – or compensating for – the induced...
Patent
1983-04-11
1985-08-27
Eisenzopf, Reinhard J.
Electricity: electrical systems and devices
Control circuits for electromagnetic devices
Including means for using, or compensating for, the induced...
367182, 367190, 73654, H01H 4700
Patent
active
045382034
ABSTRACT:
A passive mass-spring type of sensing device or other such device for monitoring a particular parameter, for example mechanical vibration, is disclosed herein. This device utilizes an electrically conductive coil having a given impedance disposed within a magnetic field in a way which results in relative movement between the coil and the field corresponding to the particular parameter being monitored, whereby to produce a monitoring signal in the form of a voltage which also corresponds to the parameter being monitored. The device includes a circuit arrangement for electronically damping the relative movement recited above in a substantial way while, at the same time, maintaining the monitoring signal at a measurable value.
REFERENCES:
patent: 2562983 (1951-08-01), Clewell
patent: 3453573 (1969-07-01), Kyle
patent: 3633053 (1972-01-01), Peters
patent: 4051718 (1977-10-01), Meckl et al.
patent: 4144764 (1979-03-01), Hartzell, Jr.
patent: 4412317 (1983-10-01), Asjes et al.
Flanner Philip D.
Morris Harold D.
Newell Gerald R.
Eisenzopf Reinhard J.
Systron Donner Corp.
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