55results about "Resistors adjusted by short-circuiting resistive elements" patented technology

A high Q on-chip inductor includes a primary winding and an auxiliary winding that is coupled to receive a proportionally opposite representation of an input of the primary winding. Further, the auxiliary winding has an admittance that is greater than the admittance of the primary winding thereby yielding an asymmetry in the admittances. As such, a push / pull mechanism is obtained in a 2-port system (e.g., 1st and 2nd nodes of the primary winding) that produces a large Q factor for an on-chip inductor.

A variable potentiometer with a wiper terminal and first and second terminals has relay switches for shorting or for unshorting resistors. When resistance is reduced between the wiper and one of said terminals, resistance is increased between the wiper and another terminal. In one embodiment two strings of resistors with the same nominal values are used between the wiper and the terminals. In another embodiment, a single string of resistors are used and are switched into either the electrical connection between the wiper and the first terminal or between the wiper and the second terminal. When resistance is lowered between the wiper and one of said first or second terminals a first resistor is replaced with a first short circuit and when resistance is increased between said wiper and another of said first and second terminals a second short circuit is replaced with the first resistor.

A touch-type variable resistor structure includes a resistor-base plate, a conductive base plate and a separator member. The resistor-base plate further includes a main plate body and a resistance layer. The resistance layer extended along an extension direction is located on the main plate body. The conductive base plate located on the resistor-base plate includes an electricity-conductive layer facing the resistor-base plate. The separator member located between the resistor-base plate and the conductive base plate further has a central opening. One of the main plate body and the main conductive plate body is formed as a flexible-touch base plate. While the flexible-touch base plate is depressed, part of the electricity-conductive layer would pass through the central opening to electrically couple the resistance layer.

An input device has a circular arc resistive layer and a metal plate as a conductive layer that is faced to the circular arc resistive layer, and can detect a position operated by partial contact between them. The input device has an element unit where a linear insulating layer as a contact preventing unit for preventing both ends of the circular arc resistive layer from simultaneously coming into contact with the metal plate during operation is disposed on one end of the circular arc resistive layer.

The present invention provides a digitally controlled rheostat device, comprising a first port A, a second port B, and a voltage regulation circuit connected between the first port A and the second port B. The voltage regulation circuit includes: a standard resistor R, a compensation voltage source US and a digitally controlled voltage source U with a variable output voltage. The compensation voltage source US uses an anti-phase follower circuit 2 to offset the voltage drop at both ends of the standard resistance R; wherein, one end C of the standard resistance R is connected to the first port A, and the other end D is connected to the first port A. The output terminal US- of the compensation voltage source is connected; the reference ground terminal US+ of the compensation voltage source US is connected to the reference ground terminal U+ of the digital control voltage source U; the output terminal U- of the digital control voltage source is connected to the The second port B is connected; the output terminal US_ of the compensation voltage source US is connected to the reference input terminal of the digital-to-analog conversion circuit 3 in the digital-control voltage source to provide a reference terminal voltage for the digital-control voltage source. The above device has the advantages of stable analog output resistance, adjustable resolution and wide range of analog resistance.