Auto-threshold slow start control circuit for a centrifuge

Details Auto-threshold slow start control circuit for a centrifuge Auto-threshold slow start control circuit for a centrifuge

1981-06-26

1983-06-28

Truhe, J. V.

Electricity: motive power systems

Braking

By auxiliary electric generator or by magnetic attraction or...

318390, 318431, H02P 516

Patent

active

043908250

ABSTRACT:
This invention relates to a slow start control network which includes a field effect transistor triggered by the voltage across a charging capacitor. The field effect transistor permits current flow through a portion of an associated centrifuge drive motor control arrangement. A supplemental charging current source is provided to assist the charging of the capacitor to the triggering signal level within a predetermined short delay time.

REFERENCES:
patent: 3914671 (1975-10-01), Morton et al.
patent: 3970245 (1976-07-01), Aeschlimann
patent: 4297623 (1981-10-01), Dupont
patent: 4300079 (1981-11-01), Kawada et al.
patent: 4339697 (1982-07-01), Franz

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