Nonvolatile nonlinear programmable electronic potentiometer

Details Nonvolatile nonlinear programmable electronic potentiometer Nonvolatile nonlinear programmable electronic potentiometer

1989-12-22

1992-01-28

Stephan, Steven L.

Electricity: power supply or regulation systems

Output level responsive

Using an impedance as the final control device

323354, 365228, G05F 112

Patent

active

050846671

ABSTRACT:
A variable impedance circuit for use in an external circuit is disclosed. The impedance value is selected by an external circuit. The variable impedance is generated between two terminals which are accessible for connection to external circuitry. The impedance provided between these terminals is determined by a control circuit responsive to electrical signals coupled to the control circuit. An internal register in the control circuit stores a value which specifies the impedance between the two terminals. The stored value is copied into a programmable nonvolatile read-only memory in response to a first predetermined electrical signal. Similarly, the value stored in the read-only memory is selectively copied into the internal control circuit register in response to a second predetermined electrical signal. A number of embodiments of variable impedance elements are disclosed which minimize the number of separate resistors required to achieve the equivalent resolution achievable using a series arrangement of resistors.

REFERENCES:
patent: 3812478 (1974-05-01), Tomisawa et al.
patent: 4157494 (1979-06-01), Kornienko et al.
patent: 4227663 (1980-10-01), Ramsey et al.
patent: 4238724 (1980-12-01), Klaus et al.
patent: 4247913 (1981-01-01), Hiniker et al.
patent: 4271486 (1981-06-01), Dagostino et al.
patent: 4458307 (1984-07-01), McAnlis et al.
patent: 4468607 (1984-08-01), Tanaka et al.
patent: 4673866 (1987-06-01), Masuda
Koch, Electronic Products Magazine, "Nonvolatile Static RAM Snapshots Data into EEPROM", 12/80, 75.

Affiliated with

Also associated with

Rating

Nonvolatile nonlinear programmable electronic potentiometer does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Nonvolatile nonlinear programmable electronic potentiometer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Nonvolatile nonlinear programmable electronic potentiometer will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1863002