LED modulator
Product Code : EL-W-11167
Quick Answer: The LED modulator varies the intensity of the LED laser or LED white with an analogue signal, and its 1 MHz internal generator allows direct measurement of the speed of light with the LED laser and a dual trace oscilloscope.
Last updated: October 2026
Key Features
- Captive driver lead carries both power and signal to the chosen light source
- BNC socket lets the output signal be watched on an oscilloscope at the same time
- Signal input through a pair of 4 mm sockets or a 3.5 mm audio jack
- Input selected on a control panel and shown on an LCD
- 1 MHz internal generator for speed of light measurement
- Runs from the light source's own plug-top supply, so no separate power supply is required
Technical Specifications
| Specification | Value |
|---|---|
| Internal generator | 1 MHz |
| Signal inputs | Pair of 4 mm sockets; 3.5 mm audio jack |
| Signal output | BNC socket |
| Input indication | LCD |
| Experiment guide | On CD |
About This Product
A signal generator can be connected to the 4 mm sockets, or an MP3 player or other audio source to the 3.5 mm jack, and the modulator uses that signal to vary the light output of the LED laser or LED white. To connect the signal source, 4 mm plug leads or a 3.5 mm plug-to-plug lead are required, and a BNC plug-to-plug lead is needed to view the signal on an oscilloscope. The LED laser and LED white are available separately. Export supply of the LED modulator can be arranged to laboratories and schools in Gambia, Portugal, Estonia, Armenia and Belgium.
Frequently Asked Questions
Q1. Does the LED modulator need its own power supply?
No. The unit modulates the power going to the light source, so it uses the LED laser or LED white's own plug-top supply.
Q2. How is the speed of light measured with it?
The 1 MHz internal generator is used with the LED laser and a dual trace oscilloscope, which allows the speed of light to be measured directly.
Related: Waves, LED white Experiment Kit, Optical Bench KIT.
For a quotation on the LED modulator, contact School Equipments India.
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