Interface for an electrical device

Details Interface for an electrical device Interface for an electrical device

1988-05-16

1989-08-29

Salce, Patrick R.

Electricity: power supply or regulation systems

Output level responsive

Using a three or more terminal semiconductive device as the...

323271, 323284, B05F 156

Patent

active

048620564

ABSTRACT:
An input-output interface disposed between an electrical device and a switching device which has opened and closed states and is controlled by a voltage of a voltage regulator and comprising a resistor disposed between the output of the switching device and the input of the electrical device, a first voltage holding circuit for holding the voltage at the input of the electrical device to a first voltage which corresponds to a high input voltage of the electrical device, a second voltage holding circuit for holding the voltage at the input of the electrical device to second a voltage which corresponds to a low input voltage of the electrical device, a first current control circuit controlling a current flowing into a line between the resistor and the input of the electrical device, causing a first current to flow when the voltage at the input of the electrical device is less than a third voltage which is between the high input voltage and the low input voltage of the electrical device, and causing a second current to flow when the voltage at the input of the electrical device is greater than the third voltage, and a second current control circuit controlling the current flowing away from a line between the resistor and the input of the electrical device, causing a third current to flow when the voltage at the input of the electrical device is less than a fourth voltage which is between the high input voltage and the low input voltage of the electric device, and causing a fourth current to flow when the voltage of the input of the electrical device is greater than the fourth voltage.

REFERENCES:
patent: 4684876 (1987-08-01), Creel
patent: 4743779 (1988-05-01), Valley
Driscoll, "Limit Cycle Voltage Regulator", IBM Technical Disclosure, 9/77, pp. 1542-1543.

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