Electricity: power supply or regulation systems – External or operator controlled – Using a three or more terminal semiconductive device as the...
Patent
1990-12-21
1992-03-17
Wong, Peter S.
Electricity: power supply or regulation systems
External or operator controlled
Using a three or more terminal semiconductive device as the...
323351, 323354, G05F 156
Patent
active
050971999
ABSTRACT:
A seven decade, voltage controlled current source is described for use in testing intermediate range nuclear instruments that covers the entire test current range of from 10 picoamperes to 100 microamperes. High accuracy is obtained throughout the entire seven decades of output current with circuitry that includes a coordinated switching scheme responsive to the input signal from a hybrid computer to control the input voltage to an antilog amplifier, and to selectively connect a resistance to the antilog amplifier output to provide a continuous output current source as a function of a preset range of input voltage. An operator controlled switch provides current adjustment for operation in either a real-time simulation test mode or a time response test mode.
REFERENCES:
patent: 4145649 (1979-03-01), Pickton
patent: 4441068 (1984-04-01), Smith
patent: 4485342 (1984-11-01), Hill
Constant Richard E.
Hightower Judson R.
Moser William R.
The United States of America as represented by the United States
Wong Peter S.
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