Questions tagged [strobelight]

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votes
3answers
164 views

Can I strobe a power led with an audio power amplifier?

I'm trying to make a fast LED strobe for visual periodic measurements of mechanisms, rotating objects to be specific. I "designed" an opto-coupler/MOSFET circuit and a transistor/MOSFET circuit. I ...
0
votes
1answer
68 views

Cheap and powerful stroboscope: Turning a floodlight into stroboscope?

I would like to build a Stroboscope with the most cost-effective and less time-consuming approach. I would like to be able to control and know the frequency of operation, which should be at least of ...
0
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2answers
1k views

How to calculate the energy output (in Joules) from an LED

I need to emit 20J over 5ms onto a target area of 962mm^2 from an LED source. The source as well as the target will reside in a completely encapsulated environment with reflective internal walls such ...
2
votes
1answer
51 views

Increasing flash rate of xenon flasher

I've come into possession of a bunch of xenon flasher units of the type commonly mounted to burglar alarms and electric gates. I'm aiming to turn them into tiny strobes as part of a project I'm ...
0
votes
1answer
127 views

switched capacitor voltage doubler for strobe circuit

I am interested in making an LED blink fast with a low duty cycle. To make the LED bright again (despite the low duty cycle), I thought I'd try to use some sort of charge pump to overdrive the LED. I'...
2
votes
3answers
235 views

How to determine forward voltage for overdriven LEDs

I'm trying to figure out how to determine the forward voltage and forward current for overdriven LEDs, and need a bit of help understanding what are the dependent variables and which are independent ...
2
votes
1answer
490 views

Overdriving LEDs with high currents

I'm trying to drive LEDs for the purposes of a strobe light. I'm planning on driving the LEDs at ~60 fps, and for ~100 us pulses to provide very sharp strobe images. If the pulses are very short and ...
0
votes
1answer
148 views

Boosting Peak Draw spec on LiFePO4 using Capacitors

Attempt to replace a 4.5Ah 12V Pb battery with LiFePO4 for a Profoto Acute B flash generator I have a detailed writeup here... Previously I had used a Tenergy drop in Li replacement which worked for ...
-1
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2answers
753 views

Invisible Strobe LED - Slow Mo Optical illusion [closed]

Me and a friend got really inspired by a technical solution that we saw on kickstarter. Its a lamp that makes a optical illusion from a feather. The feather is on some way in motion by a conductor or ...
3
votes
3answers
765 views

Connecting a Camera Hot Shoe to a homemade strobe

The Situation simulate this circuit – Schematic created using CircuitLab I need to trigger a strobe from a Sony Hot Shoe. A 3.5mm jack lead comes out of the hot shoe. Using a multimeter I ...
0
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2answers
514 views

High Power LED Strobe

I am attempting to drive 3 High-power LED's in parallel and wish to strobe them. The issue I'm running into is in parallel, the LED's require 3v and 8.4A, however, the 555 timer requires higher input ...
0
votes
3answers
672 views

Experimental strobelight duty cycle?

I am building an LED based low power strobe light. Currently it is running at 50% duty cycle, which is when I realised, it might not fully work, since if the light is on for half the time, the ...