Photoresistor Course
Gain mastery in photoresistor circuits, starting from core principles to exact light detection levels. Learn to design and simulate LDR voltage dividers, transistor switches, and comparator circuits that steadily power LEDs and buzzers for practical electronics and sensor projects in real-world setups.

from 4 to 360h flexible workload
valid certificate in your country
What will I learn?
This course equips you with hands-on skills to quickly design and test dependable LDR circuits. You'll cover LDR basics, voltage divider setups, transistor switching, and accurate comparator levels, then confirm performance using Falstad or LTspice simulations alongside actual measurements. Guided examples, safety advice, and fix-it tips enable you to confidently create reliable light-sensing LED and buzzer projects.
Elevify advantages
Develop skills
- LDR circuit design: create accurate light-activated switches quickly.
- Voltage divider tuning: adjust clear dark-to-bright levels using practical components.
- Transistor driving: select base and load elements to safely control LEDs and buzzers.
- Comparator control: build sharp window comparators with hysteresis for LDR use.
- Simulation and measurement: test LDR circuits via Falstad, LTspice, and hands-on tools.
Suggested summary
Before starting, you can change the chapters and workload. Choose which chapter to start with. Add or remove chapters. Increase or decrease the course workload.What our students say
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