Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons
Patent
1982-08-24
1985-10-01
Miller, Stanley D.
Electrical transmission or interconnection systems
Nonlinear reactor systems
Parametrons
307351, 307363, 307261, 328 35, 3281291, 328140, 318327, G01R 2309, G01R 2315
Patent
active
045448523
ABSTRACT:
A circuit for speed monitoring, particularly for fan drives. A detection device for producing an input signal sequence is provided which has a speed-dependent repetition frequency. The circuit also has a signal converter for converting the input signal sequence into an output signal whose amplitude in a function of the repetition frequency of the input signal sequence. There is also an evaluation circuit, having at least one threshold value element responsive to the output signal of the signal converter and which responds if the output signal amplitude reaches a value corresponding to a drop below a predetermined minimum speed or a rise above a predetermined maximum speed.
REFERENCES:
patent: 3838341 (1974-09-01), Gaines
patent: 4011491 (1977-03-01), Grover et al.
patent: 4082968 (1978-04-01), Jones
patent: 4107561 (1978-08-01), Schmidt
patent: 4117384 (1978-09-01), Armstrong
patent: 4121141 (1978-10-01), Frazee
patent: 4286199 (1981-08-01), Nagakubo et al.
patent: 4446439 (1984-05-01), Mizumoto et al.
patent: 4449082 (1984-05-01), Webster
Moosmann Helmut
Muller Rolf
Hudspeth D. R.
Miller Stanley D.
Papst-Motoren GmbH & Co. KG
LandOfFree
Circuit arrangement for monitoring speed of a drive motor does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Circuit arrangement for monitoring speed of a drive motor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Circuit arrangement for monitoring speed of a drive motor will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1444495