Semiconductor Lamp Usage TRIZ Cases
- Luminaire SPD Failure Indication Through External LED Monitoring
Visible LED indication linked to SPD monitoring lets luminaire maintenance teams detect surge protection failure without opening the housing.
- Solid-State Circuit Protection With AC-DC Conversion for Hazardous DC Loads
Arc-free solid-state protection combines AC-DC conversion and load control to power hazardous-location DC loads with less heat, space, and enclosure complexity.
- LED Module Current Control to Avoid Overcurrent Shutdown
A control module adjusts LED conduction after overcurrent detection, keeping lighting active and signaling power-spec mismatches.
- Solid-State Circuit Protection for Hazardous DC Lighting Loads
Arc-free solid-state switching and centralized AC-DC conversion protect hazardous-location LED loads while removing internal converters.
- LED Current Source Control Using Reference Modulation Against EMI Flicker
Reference current modulation below the control loop corner frequency suppresses EMI-driven LED flicker while keeping light output stable.
- LED Load Control Circuit for AC/DC Power Loss Reduction
A dual-mode control circuit cuts LED lighting losses by bypassing rectification and power conversion when the input is DC.
- BRCT Clamping Circuit for Short-Circuit and Spike Protection
A modular BRCT circuit detects short circuits, cuts off current, and clamps spike voltage to protect dimmer MOSFETs and auto-restart after faults.
- Luminaire Surge Protection Status Indication for Fast Fault Detection
Visible SPD status indication lets operators detect luminaire surge protection failure without opening the housing, cutting maintenance time.
- Solar LED Lamp Control Circuit for Ultra-Low Power Battery Protection
A DC-only switching controller and passive LED-resistor protection cut control losses while preventing battery overcharge and deep discharge.
- LED Load Control Circuit for AC/DC Input Loss Reduction
A dual-mode LED load control circuit bypasses rectification and converter losses on DC input while adjusting bus voltage to load demand.
- Resonant LED Supply Circuit With Sigma-Delta Dimming Control
A sigma-delta modulator drives a resonant LED supply circuit to deliver fine dimming control while reducing flicker and electrical noise.
- Current-Limited Wall Plate Circuit for Flicker-Free Nightlights
A current-steering wall plate uses voltage isolation to power switch nightlights without neutral wires or LED/CFL bulb flicker.
- MOSFET Gate Clamping Circuit for Source Surge Protection
A threshold circuit clamps the MOSFET gate during source surges, cutting device stress, component rating needs, and LED flicker.
- Digital Switch-Mode Start-Up Circuit for Low-Loss LED Drivers
Pulsed digital control switches the start-up FET on and off to cut dissipation, shrink transistor size, and keep LED controllers powered.
- Emergency Lighting Converter Control Without Dedicated Driver ICs
A microcontroller controls charger and boost driver stages using zero-crossing feedback, cutting IC count, PCB space, and cost.
- LED Power Supply Short-Circuit Circuit With Low-Loss Current Sensing
A small sampling resistor and triode amplification enable fast LED power supply short-circuit cutoff with low heat, low loss, and stable protection.
- Constant Current Source Calibration for Multi-Channel Current Consistency
A resistor-based calibration circuit tunes MOS drain voltage to correct channel mismatch and deliver stable, precise constant current output.
- Bidirectional LED Light String Using Power-Line Pulses and Fewer Switches
Power-line pulse signaling lets a bidirectional LED light string control forward and reverse light modules with fewer switches and ports.
- LED Drive Circuit With Hybrid Dimming for Flicker-Free Control
A hybrid PWM and constant-current reduction scheme stabilizes LED dimming and color temperature while avoiding flicker at low light levels.
- LED Driver Dimming Circuit Using Differential Feedback Control
A differential amplifier adds dimming to a single-stage AC LED boost driver with a fixed-reference controller while keeping LED current regulated.
- LED Drive Circuit With PWM Feedback for Precise Dimming
PWM switching and coordinated feedback control regulate LED load current for precise dimming, color control, and better efficiency.
- Digitally Programmable Current Control Circuit for Fast Accurate Load Drive
A resistive DAC and amplifier feedback path enable faster, more accurate load current control without relying on matched MOSFETs.
- Adaptive Driver Circuit Stability Under Variable Headroom Load
Headroom and load sensing retune loop gain, bandwidth, and pole position to cut flash LED driver dissipation without losing stability.
- Current Control Circuit with Resistive DAC Feedback for Fast Accuracy
A resistive DAC replaces matched MOSFET current setting, enabling faster, more accurate load current control through feedback.
- Game Controller Joystick LEDs for Precise Input Gesture Training
Direction and button LEDs mirror game commands, giving players visible input order guidance for precise gesture correction.
- LED Filament Lamp with Asymmetric Encapsulation for Color Recognition
Asymmetric encapsulation helps LED filament lamps balance warm appearance with color recognition.
- Light-Emitting Module Multilayer Optics for Mask-Free Taillight Colors
Silicon nitride and silicon oxide sub-layers use optical interference to create multiple taillight colors without masks or process flows.