1. What is the Resistance Change Formula?

The Resistance Change formula calculates the alteration in electrical resistance caused by variations in incident light intensity using the photoresistive transducer sensitivity and irradiation change.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( \Delta R \) — Resistance Change (Ohm)
• \( \Delta H \) — Irradiation Change (W/m²)
• \( \Delta S \) — Photoresistive Transducer Sensitivity

Explanation: The formula calculates the change in electrical resistance by multiplying the irradiation change by the sensitivity of the photoresistive transducer.

3. Importance of Resistance Change Calculation

Details: Accurate resistance change calculation is crucial for designing light-sensitive circuits, optical sensors, and various photoelectric applications where precise resistance variations are required.

4. Using the Calculator

Tips: Enter irradiation change in W/m² and photoresistive transducer sensitivity. Both values must be positive numbers for accurate calculation.

5. Frequently Asked Questions (FAQ)

Q1: What is a photoresistive transducer?
A: A photoresistive transducer is a device whose electrical resistance changes in response to variations in light intensity, commonly used in light-sensitive applications.

Q2: How is irradiation change measured?
A: Irradiation change is typically measured using radiometers or photodetectors that quantify the radiant flux received per unit area.

Q3: What factors affect photoresistive transducer sensitivity?
A: Sensitivity depends on the material properties, manufacturing process, wavelength of light, and operating temperature of the transducer.

Q4: Can this formula be used for all light conditions?
A: The formula works best within the linear operating range of the photoresistive transducer. Extreme light conditions may produce non-linear responses.

Q5: What are typical applications of this calculation?
A: This calculation is used in light meters, automatic lighting controls, optical switches, and various light-sensitive measurement systems.