A programmable pulsed-light source using a light-emitting diode

Jacobs, P. A. (2014) A programmable pulsed-light source using a light-emitting diode. Mechanical Engineering Technical Report 2013/09, School of Mechanical and Mining Engineering, The University of Queensland.

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report_2013_09_pulsed_LED.pdf Full text (open access) application/pdf 3.76MB 778
Author Jacobs, P. A.
Title A programmable pulsed-light source using a light-emitting diode
School, Department or Centre School of Mechanical and Mining Engineering
Institution The University of Queensland
Open Access Status Other
Report Number 2013/09
Series Mechanical Engineering Technical Report
Publication date 2014-05-22
Start page 1
End page 15
Total pages 15
Publisher The University of Queensland
Language eng
Formatted Abstract/Summary
This report describes the hardware and firmware for a low-power pulsed-light source using a high-brightness LED. The device can wait for a trigger signal, delay a little and then apply a large current across the LED for a short period. The intent is to produce a brief but bright pulse of light that is suitable for flow visualization in a shock tube or expansion tube. The current is supplied from a couple of charged capacitors and is switched by a power MOSFET. The timing and duration of the pulse is controlled by a microcontroller.
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Department Technical Report
Collection: School of Mechanical & Mining Engineering Publications
 
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Created: Thu, 22 May 2014, 19:11:57 EST by Peter Jacobs on behalf of School of Mechanical and Mining Engineering