Techniques for improved multiple-range current sensing are provided. In an example, a circuit can include a plurality of shunt resistors, a plurality of gain resistors, and a first switch. A first shunt resistor of the plurality of shunt resistors can be of a different type that the other shunt resistors of the plurality of shunt resistors. The plurality of gain resistors can include a first gain resistor of the same resistor type as the first shunt resistor. The first gain resistor can be a different resistor type than the other gain resistors of the plurality of gain resistors. The switch can be configured to couple the first shunt resistor with the load in a first state and to isolate the first shunt resistor from the load in a second state.

Techniques for improved multiple-range current sensing are provided. In an example, a circuit can include a plurality of shunt resistors, a plurality of gain resistors, and a first switch. A first shunt resistor of the plurality of shunt resistors can be of a different type that the other shunt resistors of the plurality of shunt resistors. The plurality of gain resistors can include a first gain resistor of the same resistor type as the first shunt resistor. The first gain resistor can be a different resistor type than the other gain resistors of the plurality of gain resistors. The switch can be configured to couple the first shunt resistor with the load in a first state and to isolate the first shunt resistor from the load in a second state.

The invention concerns a method for reshaping a electrical raw input signal to a formatted electrical signal and a gateway adapted to receive a range of wireless and wired sensory input, which are processed and packaged and then delivered to a remote data storage facility by use of a cellular network and an on board cellular device, wherein the gateway comprises a signal formatting circuitry and programmable signal processing device where the signal formatting circuitry is adapted to receive an electrical raw input signal and comprise means to reshape the raw input signal to a formatted electrical input signal according to input requirements of a signal processing device.

A feedback ammeter, which may be included in a source measure unit or a digital multi-meter, for example, including an operational amplifier having an input and an output and a feedback path electrically coupled between the output and the input of the operational amplifier. The feedback path includes a first non-linear device to allow the measurement of decades of current. The ammeter also includes an amplifier electrically coupled to the input of the operational amplifier and the output of the operational amplifier, a second non-linear device electrically coupled to an output of the amplifier, and a resistor electrically coupled between the second capacitor and the input of the operational amplifier. A constant resistance input impedance is established using the second non-linear device that can adjust the circuit gain.

Techniques for improved multiple-range current sensing are provided. In an example, a circuit can include a plurality of shunt resistors, a plurality of gain resistors, and a first switch. A first shunt resistor of the plurality of shunt resistors can be of a different type that the other shunt resistors of the plurality of shunt resistors. The plurality of gain resistors can include a first gain resistor of the same resistor type as the first shunt resistor. The first gain resistor can be a different resistor type than the other gain resistors of the plurality of gain resistors. The switch can be configured to couple the first shunt resistor with the load in a first state and to isolate the first shunt resistor from the load in a second state.

Techniques for improved multiple-range current sensing are provided. In an example, a circuit can include a plurality of shunt resistors, a plurality of gain resistors, and a first switch. A first shunt resistor of the plurality of shunt resistors can be of a different type that the other shunt resistors of the plurality of shunt resistors. The plurality of gain resistors can include a first gain resistor of the same resistor type as the first shunt resistor. The first gain resistor can be a different resistor type than the other gain resistors of the plurality of gain resistors. The switch can be configured to couple the first shunt resistor with the load in a first state and to isolate the first shunt resistor from the load in a second state.

A current sensor for biomedical measurements includes: a first amplifier; a first capacitor; a second capacitor; a first switch connected in parallel with the first capacitor; a second switch connected in parallel with the second capacitor; a second amplifier; a third capacitor; a resistor; and a switched capacitor network. The first capacitor and the second capacitor are connected in series and across a first input and output of the first amplifier. The third capacitor and the resistor are respectively connected across a first input and output of the second amplifier. The switched capacitor network is connected between the output of the first amplifier and the first input of the second amplifier.

A current sensor for biomedical measurements includes: a first amplifier; a first capacitor; a second capacitor; a first switch connected in parallel with the first capacitor; a second switch connected in parallel with the second capacitor; a second amplifier; a third capacitor; a resistor; and a switched capacitor network. The first capacitor and the second capacitor are connected in series and across a first input and output of the first amplifier. The third capacitor and the resistor are respectively connected across a first input and output of the second amplifier. The switched capacitor network is connected between the output of the first amplifier and the first input of the second amplifier.

A device of detecting a current from a sensor is disclosed. The device includes an integrating circuit including a network of capacitors for providing a gain setting and configured to convert the current to a voltage ramp over a length of integration time, the integrating circuit further including a reset switch configured to connect an input and an output of the network of capacitors; an ADC configured to digitize the voltage ramp into a plurality of voltage samples; and a set of modules including an analyzing module configured to analyze the plurality of voltage samples to determine a slope of the voltage ramp; an outputting module configured to determine a magnitude of the current based on the slope of the voltage ramp and the gain setting; and a reconfiguring module that is configured to reconfigure the network of capacitors and reset the voltage ramp via the reset switch.

A probe for use with a measuring instrument. The probe is a wired probe assembly comprising a housing with an integrated user interface. The wired probe assembly further comprises a measuring component for contacting a device to be measured and a cord component connecting the measuring component to the measuring instrument. The user interface can indicate a status of an electrical parameter and allow an operator to provide inputs remotely to the measuring device.