Photoresistor Course
Gain mastery in photoresistor circuits, progressing from core principles to exact light detection thresholds. Learn to design and simulate LDR voltage dividers, transistor switches, and comparator circuits that dependably control LEDs and buzzers for practical electronics and sensing tasks. Perfect for building robust light-responsive systems with simulations and real-world validation.

4 to 360 hours flexible workload
valid certificate in your country
What will I learn?
This course equips you with hands-on skills to design and test dependable LDR circuits efficiently. You'll cover LDR basics, voltage divider setups, transistor switching, and accurate comparator levels, then confirm performance using Falstad or LTspice alongside actual measurements. Guided examples, safety advice, and fault-finding tips enable you to confidently create reliable light-activated LED and buzzer projects.
Elevify advantages
Develop skills
- LDR circuit design: quickly create accurate light-activated switches.
- Voltage divider adjustment: establish sharp dark/light cutoffs using practical components.
- Transistor control: select base and load elements to safely drive LEDs and buzzers.
- Comparator setup: build sharp window comparators with hysteresis tailored for LDRs.
- Simulation and testing: confirm LDR circuit performance via Falstad, LTspice, and bench equipment.
Suggested summary
Before starting, you can change the chapters and the 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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