Search

Edwin A Dokus

from Burlington, MA
Age ~92

Edwin Dokus Phones & Addresses

  • 13 Taylor Ave, Burlington, MA 01803 (781) 365-1279 (781) 365-1302
  • Littleton, MA
  • Hernando, FL
  • 7 Fairmount St, Winchester, MA 01890 (781) 729-2524 (781) 729-5393
  • Bergenfield, NJ

Professional Records

License Records

Edwin A Dokus

Address:
Winchester, MA 01890
License #:
73629 - Expired
Issued Date:
Jun 1, 1972
Expiration Date:
Feb 3, 1976
Type:
Broker

Publications

Us Patents

Motor Control For Slow Speed Tape Recorder

US Patent:
42131618, Jul 15, 1980
Filed:
Nov 2, 1978
Appl. No.:
5/956829
Inventors:
Edwin A. Dokus - Winchester MA
David Banks - South Hamilton MA
Assignee:
American Optical Corporation - Southbridge MA
International Classification:
G11B 1546
G11B 1902
US Classification:
360 73
Abstract:
An improved control is provided for the tape transport motor of a battery-powered, slow-speed tape recorder typically used for producing magnetic recordings of an ambulatory patient. The recorder's tape transport means is driven by a synchronous AC motor powered from a DC (battery) supply. That DC supply, during normal operation, is voltage regulated to provide desired speed stability. That DC supply is inverted into a square wave DC current in a manner effectively providing a regulated square wave AC at twice the regulated DC voltage. Phase-shifting means connected to the inverter provide a phase-shifted square wave source necessary for the two-phase AC synchronous motor. In an improved mode of control, means are additionally provided for selectively supplying current at full battery voltage, square wave inverted and phase-shifted to the AC synchronous motor in lieu of the regulated supply voltage to provide high torque operation for selected periods of time as during "start-up" or "warm-up".

Fast-Recovery Circuit

US Patent:
41479904, Apr 3, 1979
Filed:
Mar 7, 1978
Appl. No.:
5/884322
Inventors:
Edwin A. Dokus - Winchester MA
Thomas K. Naylor - Belmont MA
Assignee:
American Optical Corporation - Southbridge MA
International Classification:
H03F 2100
US Classification:
330 11
Abstract:
An improved fast-recovery circuit for ECG amplifiers and the like. The fast-recovery circuit includes threshold responsive circuitry connected in parallel with part of the resistance associated with the integrator in a feedback circuit of the amplifier. The threshold responsive circuitry operates to increase feedback frequency response of the integrator when the normally very low frequency output signal of the amplifier exceeds a certain threshold. The improved circuit prevents the threshold circuitry from responding to pulses or excursions in the output signal of a relatively higher frequency content and which exceed the amplitude threshold for less than a predetermined interval, as for instance caused by pacer spikes, large QRS complexes and the like. Preferably, the improved threshold responsive means comprises transistor means connected across the integrator's resistance and having capacitance means across the base-emitter circuit thereof for inhibiting response to certain short duration signals.
Edwin A Dokus from Burlington, MA, age ~92 Get Report