A high voltage inductive adder is disclosed. In some embodiments, the high voltage inductive adder comprising a first adder circuit and a second adder circuit. The first adder circuit including a first source; a first switch electrically coupled with the first source; a first transformer core; and a first plurality of primary windings wound about the first transformer core and electrically coupled with the first switch. The second adder circuit including a second source; a second switch electrically coupled with the second source; a second transformer core; and a second plurality of primary windings wound about the second transformer core and electrically coupled with the second switch. The high voltage inductive adder comprising one or more secondary windings wound around both the first transformer core and the second transformer core and an output coupled with the plurality of secondary windings.

A phasing adder and an ultrasound probe are disclosed. According to one implementation, the phasing adder includes a delay charge transferring unit and a delay adding unit. The delay charge transferring unit obtains signal charge in an amount obtained without amplifying according to charge generated in each of a plurality of piezoelectric elements. Each of the plurality of piezoelectric elements includes a piezoelectric body to generate charge according to sound pressure of input ultrasound. The delay charge transferring unit holds the signal charge for a predetermined amount of time. The delay adding unit executes phasing adding of an amount of the signal charge held for the predetermined amount of time in the delay charge transferring unit.

A phasing adder and an ultrasound probe are disclosed. According to one implementation, the phasing adder includes a delay charge transferring unit and a delay adding unit. The delay charge transferring unit obtains signal charge in an amount obtained without amplifying according to charge generated in each of a plurality of piezoelectric elements. Each of the plurality of piezoelectric elements includes a piezoelectric body to generate charge according to sound pressure of input ultrasound. The delay charge transferring unit holds the signal charge for a predetermined amount of time. The delay adding unit executes phasing adding of an amount of the signal charge held for the predetermined amount of time in the delay charge transferring unit.

A magnetic device configured to perform an analog adder circuit function and including a plurality of magnetic units. Each magnetic unit includes n magnetic tunnel junctions electrically connected in series via a current line. Each magnetic tunnel junction includes a storage magnetic layer having a storage magnetization, a sense magnetic layer having a sense magnetization, and a tunnel barrier layer. Each magnetic unit also includes n input lines, each being configured to generate a magnetic field adapted for varying a direction of the sense magnetization and a resistance of the n magnetic tunnel junctions, based on an input. Each of the n magnetic units is configured to add said n inputs to generate an output signal that varies in response to the n resistances.

A magnetic device configured to perform an analog adder circuit function and including a plurality of magnetic units. Each magnetic unit includes n magnetic tunnel junctions electrically connected in series via a current line. Each magnetic tunnel junction includes a storage magnetic layer having a storage magnetization, a sense magnetic layer having a sense magnetization, and a tunnel barrier layer. Each magnetic unit also includes n input lines, each being configured to generate a magnetic field adapted for varying a direction of the sense magnetization and a resistance of the n magnetic tunnel junctions, based on an input. Each of the n magnetic units is configured to add said n inputs to generate an output signal that varies in response to the n resistances.

Methods and apparatus include and amplifier circuit and a first capacitor branch including a first plurality of capacitors. The first capacitor branch couples to an input signal and to an input of the amplifier circuit. A second capacitor branch includes a second plurality of capacitors. The second capacitor branch couples to the input of the amplifier circuit and to an output of the amplifier circuit.

A device for detecting electric potentials includes a plurality of measuring inputs (9) for connecting to measuring electrodes (11), which can be placed on the body of a patient (3), a plurality of measuring amplifiers (Op.sub.1, . . . , Op.sub.N), and a potential output (27) for connecting to an additional electrode (31), which can be placed on the body of the patient (3), to which a preset voltage can be applied. A summing unit (17) sends a signal, which is an indicator of the mean value of the signals sent by the measuring amplifiers (Op1, . . . , OpN). A current-measuring device (29) sends a current signal, which is proportional to the current flowing through the potential output. An analyzing unit (35) is connected to receive a potential output voltage signal, the summing unit output (19) signal and the current-measuring device signal. The analyzing unit is configured to generate an impedance signal from the fed signals.

A device for detecting electric potentials includes a plurality of measuring inputs (9) for connecting to measuring electrodes (11), which can be placed on the body of a patient (3), a plurality of measuring amplifiers (Op.sub.1, . . . , Op.sub.N), and a potential output (27) for connecting to an additional electrode (31), which can be placed on the body of the patient (3), to which a preset voltage can be applied. A summing unit (17) sends a signal, which is an indicator of the mean value of the signals sent by the measuring amplifiers (Op1, . . . , OpN). A current-measuring device (29) sends a current signal, which is proportional to the current flowing through the potential output. An analyzing unit (35) is connected to receive a potential output voltage signal, the summing unit output (19) signal and the current-measuring device signal. The analyzing unit is configured to generate an impedance signal from the fed signals.

An arithmetic apparatus includes input line pairs and a multiply-accumulate device. A signal pair is input to the input line pairs within an input period. The multiply-accumulate device includes multiplication units, an accumulation unit, a charging unit, and an output unit. The multiplication units generate a positive weight charge and a negative weight charge. The accumulation unit accumulates the positive weight charge and the negative weight charge. The charging unit charges the accumulation unit after the input period. The output unit performs, after charging starts, threshold determination using a predetermined threshold value on a voltage of the accumulation unit, to thereby output a positive multiply-accumulate signal representing a sum of positive weight product values and a negative multiply-accumulate signal representing a sum of negative weight product values.

An arithmetic apparatus includes input line pairs and a multiply-accumulate device. A signal pair is input to the input line pairs within an input period. The multiply-accumulate device includes multiplication units, an accumulation unit, a charging unit, and an output unit. The multiplication units generate a positive weight charge and a negative weight charge. The accumulation unit accumulates the positive weight charge and the negative weight charge. The charging unit charges the accumulation unit after the input period. The output unit performs, after charging starts, threshold determination using a predetermined threshold value on a voltage of the accumulation unit, to thereby output a positive multiply-accumulate signal representing a sum of positive weight product values and a negative multiply-accumulate signal representing a sum of negative weight product values.