Temperature Control Using Analogue Comparing Device TRIZ Cases

See how a hybrid two-wire thermostat merges TRIAC and relay components to achieve silent operat

See how a modular heating control circuit uses PTC temperature sensing and dual comparison circ

See how relocating the power supply to the blower motor module reduces thermostat size and heat

See how a PTC converter and Peltier cooling module maintain inertial sensor temperature below a

See how a voltage conversion circuit detects input polarity and converts reversed signals to sa

See how expansion valve feedback control equalizes refrigerant superheating across indoor units

See how integrated circuits mounted in a water heater tank perform computational processes whil

See how a control signal switches between continuous and PWM modes using variable error thresho

See how a variable error threshold switches heating control between continuous and PWM modes ba

See how a thermostat compares time-series data across VAV zones to detect performance deviation

See how a movable cooling assembly decouples from the condenser at elevated temperatures to pre

Pulse-width correction compensates for photocoupler waveform distortion, enabling faster and more reliable indoor-outdoor AC communication.

A single analog feedback signal drives a bi-directional load while a dead gap zone prevents H-bridge shoot-through and supports precise control.

A single analog feedback signal drives H-bridge polarity while an adjustable dead gap prevents shoot-through and stabilizes thermoelectric temperature.

A thermostat encodes temperature difference in signal duty cycle so HVAC controllers can vary compressor or blower speed over existing wiring.

PWM duty control combines thermistor sensing with a reference voltage to avoid excessive fan rpm, cutting cooling power use and noise.

A protection circuit shifts amplifier input impedance when thermocouple leakage occurs, keeping heater temperature within a safe range.

A bi-directional TEC between stacked dies actively shifts heat both ways, improving real-time thermal control in package-on-package assemblies.

A differential amplifier and dual-mode protection circuit handle thermocouple leakage currents to keep heater operation below a safe temperature.

A co-injected base cradles the core body and stabilizes internal parts, enabling faster thermostat assembly with fewer positioning failures.

Thermal feedback with an on-chip heater stabilizes local temperature, enabling precise reference voltage generation down to 0.65V.

A feedback heater stabilizes local circuit temperature to generate a precise, curvature-free reference voltage at supply voltages down to 0.65V.

A differentiable low-frequency switching waveform and resonant filtering cut radiation noise while keeping heater power efficient and precise.

An integrated heated pipe, insulating pad, and retained cover keep hose bibs and nearby water pipes from freezing in cold weather.

Thermoelectric feedback regulates igniter voltage to hold target temperature, limit fluctuation damage, and extend service life.

PWM time-sliced sensing lets an MCU measure atomizer heater resistance directly with a larger sampling resistor, improving accuracy and cutting circuit cost.

A temperature sensor and control circuit shut off the heater when the atomizer chamber is empty, preventing residue combustion and irritants.

Dual power-gradient and resistance checks shut off a PTC heater before high-voltage overheating damages nearby plastic components.

Dual shutdown conditions use power trend and elevated resistance to stop a PTC heater before overheating damages nearby plastic parts.

Closed-loop heating and a removable protective skin keep depilatory wax melting consistent while reducing wax buildup and maintenance.

A differentiable low-frequency waveform with switching amplification cuts heater noise and improves temperature control in inspection systems.

A simplified bridge circuit removes resistor error sources to hold heater temperature within about ±1°C and improve sensor sensitivity.

A dual thermal switch setup separates auto reset from manual reset to avoid unnoticed heater trips and unintended reactivation.

A single temperature sensor drives PWM power balancing across multiple heaters to maintain uniform heating with lower control complexity and cost.

By switching between TRIAC and relay modes, this two-wire thermostat cuts noise, heat sink size, and power use while maintaining comfort.