Measurement Using Dc-Ac Conversion TRIZ Cases

A portable proving unit generates a specified AC voltage on an insulated wire to verify non-contact measurement systems.

A magnetically coupled DC current sensor uses a dynamic voltage supply to modulate drive amplitude and frequency for accurate secondary side measurements.

Adjusting the sensor frequency dynamically resolves the trade-off between temporal resolution and interference susceptibility while reducing power consumption.

A portable proving unit generates verified AC or DC voltage outputs to test measurement devices.

A segmented Rogowski current sensor with a retainer member captures the output stud of a pad-mount transformer.

Magnetic core sensing stage detects residual currents in low voltage lines, replacing complex electronics to reduce power consumption and manufacturing cost.

Integrates a connector socket with shunt circuitry to eliminate exposed terminals and reduce installation labor.

Bayonet coupling locks syringes to prevent misalignment and fluid spillage while eliminating pressure jacket requirements.

A switching power supply counter tracks switch enable events to measure energy consumption.

Adjacent resistor groups sharing a common voltage eliminate insulation spacing, reducing circuit board footprint while maintaining measurement precision.

A closed-loop fluxgate current sensor measures primary current using a saturable magnetic core and secondary coil with alternating excitation.

Segmented conductors reduce sensor volume while interference compensation maintains accuracy in high voltage environments.

Dual-core current detecting devices cancel induced electromotive forces via opposing magnetic fluxes, suppressing noise terminal voltage in closed circuits.

A current sensor uses a GSM module to transmit only a counter value when current exceeds a threshold.

A multiplier circuit multiplies voltage signals to determine power levels without preamplification.

A differential sensing system uses replica devices and cross-coupling switches to measure circuit current.

A shorted compensating winding cancels alternating magnetic flux to isolate the direct current component.

Segmented magnetic circuits with Hall effect sensors measure high-intensity currents without saturation, reducing external field sensitivity.

Oblique pole magnets and rotated sensor coils resolve device complexity trade-offs while delivering full circumferential coverage.

A current-measuring device uses a compensation coil to minimize detected magnetic fields for precise electric current determination.

Centering the Hall element within the magnetic core gap minimizes external field interference and reduces output errors.

A current sensing circuit uses a magneto-electric converter and transimpedance amplifier to process signals.

Sigma-delta modulators oversample analog current signals to eliminate formal errors during PWM phase transitions in motor vehicle control systems.

Segmented housing constrains the circuit board to stabilize connector mounting, reducing positional displacement between the Hall element and magnetic core.

A C-shaped shield plate positions a magneto-electronic conversion element near minimum magnetic flux density to measure wide current ranges accurately.

Operational amplifier circuitry with variable feedback resistance maintains near zero volts at current sensor outputs.

Shielded printed board structures minimize electric field interference to maintain consistent detection values across varying frequency ranges.

Modular current transformers enable easy replacement while self-calibration routines maintain measurement accuracy without manual recalibration equipment.

A magnetoresistive sensor detects weak currents using a vertical layered structure to isolate heat interference and improve measurement precision.

A current detection circuit uses symmetric signal transmission units to cancel external noise interference.

A multilevel inverter generates precise AC output voltage from a DC source to drive gradient coils in magnetic resonance imaging systems.

A residual current device employs a magnetic core operating in saturation to detect DC and AC currents via secondary winding signals.

Intermediary current transformers overcome low burden limitations to extend measurement distance while maintaining accuracy.

A magnetic field sensor array localizes current vectors in electrical devices using a processor that solves Biot-Savart superposition equations.

Dual Hall sensors compare signals to identify stray fields, preventing false circuit breaker trips.

A direct current sensing circuit divides current through a switching mechanism and inductive coupling to generate a proportional square wave output.