Condition monitoring means

Details Condition monitoring means Condition monitoring means

1985-04-18

1986-02-18

Wong, Peter S.

Electricity: power supply or regulation systems

External or operator controlled

Phase controlled switching using electronic tube or a three...

323242, 323245, 340 52C, 340 52B, H02J 312

Patent

active

045715378

ABSTRACT:
A monitoring circuit for monitoring the condition of, for example, a remotely situated structure is shown as having a transducer responsive to the occurrence of a preselected condition in the remotely situated structure and effective for causing a signal indicative thereof; timing apparatus actuated upon the occurrence of the signal effective to establish the validity thereof; a power circuit electrically closed upon the expiration of a time span established by the timing apparatus, and sensory warning apparatus actuated upon electrical closure of the power circuit.

REFERENCES:
patent: 3421322 (1969-01-01), Reznicek
patent: 3806868 (1974-04-01), Portman
patent: 4074226 (1978-02-01), Takeda et al.
"Silicon Economy Programmable Unijunction Transistor", General Electric, 60.20, 11/1967.

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