Electronic Circuit Testing TRIZ Cases

Electrical measurements during reverse conduction estimate junction temperature and resistance to predict semiconductor failure without added sensors.

A dual ring oscillator with stressed and reference paths boosts MOSFET aging detection resolution for finer supply voltage compensation.

Selective parallel switching paths cut parasitic capacitance in pin drivers, preserving waveform fidelity and timing across wide voltage swings.

Edge detection plus charge-discharge checking verifies touch signals, enabling thinner sealed wearables without mechanical switches.

Cross-coupled differential amplifiers hold constant output current while rejecting ground-referenced noise in microelectronic testing.

A test pulse isolates field ground through an optocoupler, letting capacitor charge behavior reveal broken wires in input-powered digital inputs.

Buffers and Kelvin probe pairs balance parasitic resistance effects, enabling accurate CMRR measurement on low-impedance amplifiers.

Independent monitoring of corrected regulator voltages detects ADC faults and triggers safe open-state control in vehicle electrical systems.

LC filters and a timed discharge resistor detect open load faults by voltage drop, improving accuracy while reducing speaker damage risk.

A switched resistive circuit enables stress testing of low-voltage transistors above normal ratings without overloading the current-leg load.

Separate on-die n-type and p-type sensors track transistor degradation and let control logic tune voltage or frequency to extend IC life.

Detecting transducer load impedance from terminal ripple lets audio circuits adjust charge pump voltage, cutting power waste without clipping.

Dual control loops estimate load voltage and current in audio amplifiers, avoiding ripple-current errors and current-sense power loss.

Using a 512-bit polar mother code and puncturing to 384 bits, this PBCH case improves 5G broadcast reliability with lower encoder-decoder complexity.

Two-phase channel switching cancels amplifier gain drift and common-mode changes for more stable sensor measurements.

Auto-retry read circuitry shifts read levels inside the memory chip, cutting tester complexity, cost, and multi-page test time.

Built-in self-test checks touchscreen sensor branches for opens, shorts, and resistance faults, cutting test time and isolating failures.

An independent impedance-monitoring path compensates for frequency mismatch to verify landing gear status and detect sensor faults.

Separate control loops measure load voltage and current without power-path sensing, improving impedance detection in Class-D audio amplifiers.

A voltage monitor paired with a delay monitor tracks low supply voltage despite aging drift, enabling higher internal circuit frequency.

Periodic input-output flipping with butterfly switches reverses aging stress in CMOS differential arrays to bound offset buildup over time.

Independently controlled pass transistors let one delay circuit mimic multiple delay paths, cutting chip area while measuring transistor variations.

Aggregating multiple patch panel switch states into one signal cuts polling time and lets shared processor I/O lines also carry data.

A general purpose processor drives calibration signals over a bus to tune analog circuits across process nodes and PVT variation.

Muller C-element self-timing oscillation counts distinguish chip process corners while reducing temperature overlap and standby power.

Switchable reference injection lets the control circuit detect offset and gain errors in ADC signal paths with minimal measurement interruption.

Measures load impedance in fully differential class D amplifiers by combining common-mode ripple sensing with LC inductor evaluation.

When one series LED shorts, the driver detects it and raises or redistributes current to maintain luminance without backup components.

A ground-biased reference ring oscillator enables post-burn-in degradation measurement without pre-test characterization, cutting test time and cost.

Integrated logic output enables voltage-based measurement of small delay steps, helping detect adjacent-bit shorts in semiconductor delay lines.

A skewed latch gates test POR bypass by IC configuration, enabling low-voltage testing without exposing the reset path to tampering.

Monitored switching delay reveals current source degradation early, helping protect switching units and maintain reliable electrical consumer activation.

Bidirectional coupling between comparator reference inputs compensates tolerances and keeps redundant sensor outputs clear and identical.

Pre-fabrication strike-model simulation pinpoints vulnerable circuit regions to cut radiation testing effort, cost, and design time.

Unequal capacitors create a pseudo-differential test signal so the detection circuit can self-diagnose faults during startup and operation.

Using DDS with integer dividers, this case maintains stable phase relationships across frequency changes for faster, more accurate measurements.

Common-mode and differential current sensing estimates load impedance across an LC output filter and helps detect open loads in class D amplifiers.

Controlled DC and AC stress circuits isolate PMOS NBTI and NMOS HCI degradation, improving transistor health assessment.

Captured midpoint offset lets a high-pass converter produce accurate differential outputs without waiting for filter settling.

Disconnected A/B electrode strings lower coupling capacitance and resistance, speeding simultaneous touch detection while reducing system loading.

Electrical current sensing with FFT and time averaging detects subtle speaker defects without costly acoustic test equipment.

A control-configurable delay circuit measures multiple delay characteristics in one monitor, reducing chip area and manufacturing cost.

Flushable pipeline latches turn the test signal network into a PSRO path, enabling accurate on-chip speed screening with minimal extra hardware.

Internal voltage shifting and mode-based node coupling let more chips share test pads while preventing back-powering in normal operation.

An independent impedance-based monitor compensates for frequency mismatch to verify landing gear proximity sensing with less weight and space.

Built-in self-test couples to resonator terminals inside WLCSP oscillators to detect RLD and DLD failure modes without extra test pins.

Multiplexer-driven voltage-to-current conversion with charge boosting enables precise high-rate electromigration pulses with minimal overshoot.

Runtime logic-block reconfiguration lets one integrated circuit support multiple I/O protocols without recompiling or adding dedicated controllers.

Embedded mux and ADC enable random access to internal analog voltages for real-time debugging without shutting down the IC.

Transition counting at multiple oscillator nodes estimates on-chip supply voltage, enabling adaptive clocking before droop causes logic failures.