Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons
Patent
1980-07-24
1984-07-31
Anagnos, Larry N.
Electrical transmission or interconnection systems
Nonlinear reactor systems
Parametrons
307362, 307594, 307200B, 365229, 340663, H03K 17687, H02J 700, H02J 900, H02J 1300
Patent
active
044632703
ABSTRACT:
A circuit for detecting a difference in the relative magnitudes of two voltages includes a current sensing circuit connected between the first voltage and ground to thereby cause a first current to flow in the current sensing circuit, an amplifier connected between the second voltage and ground and connected to the current sensing circuit to thereby cause a second current to flow, the second current being equal to the first current when the first voltage is equal to the second voltage, and a variable impedance inverter connected to the first voltage and connected to the amplifier, the variable impedance being controlled by the first voltage, the output of the inverter thereby being related to the difference between the first voltage and the second voltage. The invention is particularly useful for controlling a battery backup power supply in a microprocessor having a volatile memory and for creating precision delay circuits.
REFERENCES:
patent: 3870901 (1975-03-01), Smith et al.
patent: 3895239 (1975-07-01), Alaspa
patent: 3950654 (1976-04-01), Broedner et al.
patent: 4140930 (1979-02-01), Tanaka
patent: 4288865 (1981-09-01), Graham
patent: 4296338 (1981-10-01), Thomas
patent: 4301380 (1981-11-01), Thomas
patent: 4384350 (1983-05-01), Lee et al.
Anagnos Larry N.
Bertelson David Roy
Fairchild Camera & Instrument Corp.
Fish Ronald Craig
Olsen Kenneth
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