Electricity: power supply or regulation systems – Output level responsive – Using a three or more terminal semiconductive device as the...
Patent
1991-10-25
1993-03-16
Stephan, Steven L.
Electricity: power supply or regulation systems
Output level responsive
Using a three or more terminal semiconductive device as the...
323281, 323349, G05F 1575
Patent
active
051948028
ABSTRACT:
A current regulator providing a highly accurate bidirectional output current, proportional to a control voltage (V.sub.i) and suited to monolithic integration is disclosed. The regulator uses a clocked integrator which integrates an error charge, arrived at by taking a precisely ratioed sample charge proportional to a voltage drop (V.sub.F), free of its common mode voltage, which is in turn proportional to the load current, and one proportional to the control voltage (V.sub.i), and combining them subtractively to form the error charge. The arrangement uses two small charge ratioing capacitors charged respectively to V.sub.F and V.sub.i, and a slightly larger integrating capacitor. The clocking is at a 10 KHZ rate. High impedance circuitry is utilized so that highly accurate, integrated capacitors of modest size and high relative accuracy may be used. These establish a regulator transfer function of high accuracy.
REFERENCES:
patent: 4933625 (1990-06-01), Hayakawa
patent: 5023541 (1991-06-01), Yosinski
Hill Kevin E.
Stefura Gary A.
General Electric Company
Shay Bernard E.
Stephan Steven L.
Sterrett Jeffrey
Young Stephen A.
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