Simple Circuit Module Light Dependent Resistor Unit
Product Code : EL-EE-10955
Quick Answer: The Simple Circuit Module Light Dependent Resistor Unit uses three ORP12 light dependent resistors in parallel, giving approximately 200 ohms in room lighting, with 4 mm plug connections.
Last updated: October 2026
Key Features
- Cluster of three ORP12 LDRs connected in parallel
- Approximately 200 ohms in room lighting
- Gives greater sensitivity and controls the current in a reed relay
- 4 mm plug connections
Technical Specifications
| Specification | Value |
|---|---|
| LDRs | Three ORP12, in parallel |
| Resistance | 200 ohms uncovered (approx.) |
| Connections | 4 mm plug |
About This Product
Three ORP12 light dependent resistors are wired in parallel on this unit, so its resistance is approximately 200 ohms in room lighting. The arrangement gives greater sensitivity and lets the unit control the current in a reed relay. It is one of the Simple Circuit Modules for pupils aged 11 to 13.
Frequently Asked Questions
Q1. Why does the unit use three LDRs?
The cluster of three ORP12s in parallel has a resistance of approximately 200 ohms in room lighting, giving greater sensitivity and control of the current in a reed relay.
Related: Electricity & Electromagnetism, Simple Circuit Module Mounted Variable Resistor, Simple Circuit Module Lamp Holder.
For a quotation on the Simple Circuit Module Light Dependent Resistor Unit, contact School Equipments India.
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