Resistance/Reactance/Impedence TRIZ Cases

See how a capacitance sensor probe detects frost thickness on cooling fins to trigger defrost c

Guide grooves, sealing, and an electrode sensor keep washer detergent connections stable, correctly detect insertion, and block water ingress.

A removable detergent container uses a coupled connector and electrode sensing to prevent contact failure, short circuits, and misinsertion.

An angled comb-electrode sensor in a perforated case keeps fryer oil measurements accurate by limiting fouling and temperature-gradient errors.

A guarded stainless steel electrode with PTFE insulation boosts fryer oil conductivity signal gain while resisting heat, noise, and contamination.

Capacitance sensing detects liquid presence, flow, or amount without exposed contacts, reducing leakage risk and enabling sound, light, or motion feedback.

Resistive tags on hanging products let a display peg detect item type and count, improving inventory tracking and placement verification.

A conductive body forms a Faraday cage around the evaluation circuit, cutting interfering capacitances and improving switch reliability near metal parts.

A reference sensor surface compensates for humidity, temperature, and aging effects to keep capacitive switch actuation detection stable.

Active shielding drives the sensor and shield with the same clock signal to cut parasitic capacitance and improve switch reliability near metal housings.

Internal controllers and feedback loops let a SATA interface verify OOB signaling without external test gear, improving test reliability and cost.

An active filter and low-pass stage remove power-line noise from dryer electrode signals, improving moisture detection accuracy.

Nested waveguide components enable precise, changeable THz waveguide length without substrate thickness tolerance limits.

A detection wire placed between adjacent power wires stabilizes load distribution and improves multicore cable disconnection prediction.

Using the antenna as the sensing electrode enables accurate body proximity detection while reducing sensor size and power use in wireless devices.

Impedance-based load detection inhibits short-circuit protection during startup, preventing false trips in high-power distribution units.

A superstrate-filled embedded coplanar waveguide removes air-gap distortion to improve thin-film permittivity and loss characterization.

A broadband reject-filter sensor with log-periodic resonators boosts permittivity sensitivity for continuous, non-invasive glucose monitoring.

Defined electrode resistance and active shield capacitance ranges improve proximity and hover detection accuracy without excessive design iteration.

Fault-free line disconnection testing verifies GPSS damping in weak grids by recording power oscillations and tuning control gains.

Separated detection time slots reduce adjacent-module noise, improving multi-cell battery impedance accuracy and state evaluation reliability.

Predefined charge current pulses estimate battery internal resistance during charging without continuous pulse detection or high-rate data storage.

Internal resistance tracking during charging helps identify suitable battery charge protocols that limit heat-related degradation and extend cell life.

Non-destructive profile fitting and resistance checks estimate positive electrode loading and flag abnormal battery material composition.

Formation-stage feature data and a 2D Gaussian model identify abnormal battery cells non-destructively before pack assembly.

A virtual resistance algorithm limits overcurrent by adjusting PWM duty, avoiding hardware protection complexity and waveform distortion.

Distributed grid sensors correlate time-stamped voltage, current, and environmental data to detect and localize faults with high accuracy.

Distributed grid sensors correlate time-stamped current and voltage data with rules to detect fault types and pinpoint locations in real time.

A resistor-network diagnostic circuit compares detection voltages to identify stuck-closed battery main relays without added circuit complexity.

Integrated RF, isolator, and impedance-matching ports enable waveguide measurement without disassembly, preserving alignment and RF performance.

Separating error and impedance measurement periods lets battery systems correct induced EMF and improve impedance accuracy.

By limiting magnetic flux loop area and correcting induced EMF in a second path, this case improves battery complex impedance accuracy.

A revolving multi-slug probe assembly expands harmonic tuner frequency coverage while avoiding extra switching electronics or manual reconfiguration.

By comparing EPAD voltages with and without diagnostic current, this case detects poor chip ground solder joints before they cause airbag faults.

Coupling holes and a tuning probe let this waveguide coupler-divider support harmonic load pull with higher directivity in non-50Ω tests.

Measures cell internal resistance during the assembly-to-formation pause to catch foil breakage early without stopping battery production.

AC impedance across multiple frequencies replaces slow sedimentation tests, deriving mixture state indices from equivalent circuit parameters.

Internal routing of the response path shrinks magnetic flux area, reducing induced EMF error in battery impedance measurement.

Multiple EIS profiles and arc resistance change rates separate negative and positive electrode arcs for more precise battery degradation diagnosis.

Superimposed inspection power enables in-operation current and voltage diagnosis of electrochemical modules without stopping output or input.

Fits full-cell voltage-capacity profiles and resistance data to estimate negative electrode loading and flag abnormal battery composition without disassembly.

By comparing calculated coil loss with measured system loss, this case detects foreign objects that waste power in wireless charging.

Remotely powered active bi-electrodes use single-wire unshielded connectors to measure bio-potential and bio-impedance with dry electrodes and low power.

Time-stamped current, voltage, and environmental data are correlated across grid sensors to detect and localize faults in real time.

A waveguide-coupled multilayer resonator measures dielectric characteristics above 110 GHz while simplifying coupling and suppressing leakage.

Electrochemical impedance features estimate battery core temperature without thermistors, cutting wiring, weight, and thermal lag.

A resistance-ratio sensing circuit uses drift and contact regions with opposite temperature coefficients to track semiconductor heat reliably.

Non-standard TSV test structures verify silicon carbide via etching and conductivity before packaging, reducing incomplete RF amplifier connections.

A CPW step-impedance resonator shortens resonator electrical length to shrink qubit layout area and raise superconducting chip integration.

Comparing wafer resistivity before and after air exposure reveals N- or P-type conductivity in high-resistivity silicon with simple, low-cost testing.

Cross-charging between main and sub high-voltage batteries measures cell deterioration and internal resistance to predict EV battery lifespan.

A broadband resonator sensor tracks permittivity changes for non-invasive, continuous biomarker monitoring across multiple frequency bands.

Dynamic internal resistance thresholds use voltage, current, temperature, and history to detect parallel-cell battery defects more accurately.

Overlapping conductive-oxide inspection lines expose fine trace scratches and shorts through measurable resistance changes in display touch layers.

Electrochemical cell fingerprints are hashed and checked by the battery management system to detect aftermarket replacements and protect battery stability.

Through-holes in an insulating housing enable four-point contact resistance checks, making faulty electrical connections detectable.

A compensation-point sequence impedance approach identifies fault direction accurately when negative-sequence voltage is weak and noise is high.

A guided coaxial contact fixture improves repeatability in high-frequency PCB loss testing by reducing impedance discontinuities and probe variability.

Measures contact resistance and applies wetting current to clear residue on low-current electrical contacts, improving conductivity and reliability.

Impedance analysis on blocking cells plus neural network correction predicts lithium secondary battery capacity fade without long test cycles.

Dedicated panel test pads and segmented lead lines isolate panel resistance, enabling accurate contact resistance checks and fewer pixel defects.

A seamless conductive outer layer and PCB-mounted capacitive sensor improve dust and liquid resistance while distinguishing soft and hard touches.

A shared signal wire and single test terminal enable precise MOSFET ON-resistance measurement while reducing terminal area and test complexity.

Padding finite frequency data with extrapolated samples enables complex time gating while suppressing band edge artifacts and distortion.

Binary sparse spectrum sequences concentrate excitation energy at target frequencies, enabling faster broadband transfer measurements with higher SNR.

A low-frequency sync signal sent over fiber and locked by a PLL preserves phase accuracy for remote wideband DUT measurements.

Switched current balancing in a differential sensor ADC improves power-supply rejection, cuts noise conversion, and reduces bridge area.

Pulse-shaped drive currents synchronized to resonator oscillation reduce harmonic noise folding and improve inductive sensing accuracy.

Dual capacitive sensors and guard electrodes separate true head proximity from casing touch, cutting false positives in mobile devices.

Early A/D conversion and digital signal mixing let inductive proximity sensors resist EMI and temperature drift while measuring object distance.

Adaptive switching between two sensing frequency sets filters charger and field noise, improving touch detection accuracy.

Dynamic bias and current mirroring cut startup current while preserving accurate power-good detection as system power rises.

RC discharge timing through digital I/O pins enables low-power capacitive touch sensing with noise filtering, higher sensitivity, and easy scaling.

An integrated oscillator and health monitor detects faulty proximity sensor operation without redundant sensors, reducing false indications, weight, and cost.

PMOS bulk-bias compensation cancels transistor mismatch in differential sense amplifiers, reducing sense margin and speeding memory reads.

Measures an integrated circuit RC time constant from the DC component of a delta-sigma modulator output, improving calibration precision without extra circuitry.

Multiple capacitive sensing regimes switch duty cycles to improve touch, glove, and hover position detection across different distances.

Capacitance sensing maps keys to defined touch areas, cutting pin count and die area without using valuable display space.

Differential voltage sensing under loaded and unloaded current reveals contactor resistance, helping EV chargers detect overheating risk early.

A health monitor circuit tracks oscillator behavior to catch faulty proximity sensing and avoid redundant sensors, extra weight, and added cost.

Tracks resonant frequency and impedance changes to detect proximity, touch, deformation, and manipulation with one sensing approach.

A precharged sampling capacitor measures touch-pad capacitance without negative voltages, improving sensitivity and adding proximity detection.

Frequency-compressed heterodyne measurement captures DUT amplitude and phase over wide bandwidths without synchronized analyzers or costly high-speed scopes.

A current-sensing panel load circuit measures touch capacitance variation quickly and accurately despite external noise and parasitic currents.

Multiple transistors amplify tiny fingerprint capacitance differences while layered protective films improve ESD and impact resistance.

A self-powered RC timing interface checks proximity sensor air gaps in tight aircraft door spaces, avoiding false indications and delays.

Variable electrode switching adjusts capacitance sensing by window position to detect entrapment accurately without raindrop false alarms.

Insulated protrusions and bridging members remove the lens and optical adhesive, cutting touch panel thickness while improving light transmittance.

Switchable auxiliary and shield electrodes let a planar capacitive sensor compare capacitance states to define sensing range and improve directivity.

A universal programmable sensor interface uses hierarchical setup and curve tuning to adapt one component across sensor types while limiting errors.

Apertures in a floating electrode cut transmitter coupling, improving capacitive input sensing sensitivity and signal-to-noise performance.

Offset charge is corrected with a switched capacitor plus an adjustment capacitor pulsed N of M cycles to improve capacitance measurement precision.

A capacitive sensing matrix replaces resistance scan keys to cut pin count and die area while enabling full keyboard input in small devices.

A resistor-divider level shift circuit lets a current sensor measure high currents and voltages on-chip without bulky magnetic sensing hardware.

Current steering and pulse shrinking let an ATE formatter create multiple fast edge transitions with lower power and less circuit complexity.

Threshold-based dual-mode capacitive sensing enables quick full-range selection and precise fine adjustment along a sensing path.

A diode-quad V/I source combines force current or voltage modes with clamp protection, cutting test circuitry while protecting DUTs and equipment.

Adjustable spring probes and pressure sensing stabilize ohmic contact on rough conductive fibers for more accurate resistivity testing.