Electrical Engineering Stack Exchange
Electrical Engineering Stack Exchange

Questions tagged [strobelight]

19 questions
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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 infrequent, you end up needing extremely bright…
nathan lachenmyer
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How can I make an LED strobe light for a turntable to replace a glimm light?

I'd like to make a LED strobe light for a turntable instead of the old glimm light. I've seen some solutions for it by using a crystal oscillator + divider to achieve 100 Hz (I'm in in the EU with 50 Hz 230 V), but I don't have any blueprints to…
driverhertz
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Can I modify this LED Light Circuit board to not strobe and just stay lit?

I'm looking for anyone who might know if I can modify this small LED light circuit board to not strobe? I want to use it for my van as indicator lights, I've only managed to find these that will fit over existing holes etc. It strobes at the moment…
Scott Spooner
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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 working on; this means increasing their flash rate from…
Shedworth
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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 measured 6V across the tip and sleeve of the jack, and…
Blue7
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UL 1971: is there a tolerance on strobe flash rates?

UL 1971 27.1.3(a) requires that listed strobes used for fire alarm signaling to hearing-impaired occupants flash at between 1 and 2 flashes per second: a) Signaling lights shall produce a candela output in effective intensity in accordance with…
ThreePhaseEel
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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 plan to have an Arduino as the precision strobe…
Ömer Gezer
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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 variables. For a normal 3mm LED, I understand that…
nathan lachenmyer
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High power pulsed LED

I found this circuit on another thread on this site and I believe it is close to what I need for my own application (Short duration (approx 128 us), low duty cycle (<1%) high power LED pulses). However as I am not so strong on electronics there are…
simon mcloughlin
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How to calculate the resistor value of a xenon flash circuit to be a set frequency

How can I calculate the value of R2 in the following circuit to have the xenon flash (the rate of the charge/discharge of the capacitor) be set at 10Hz? https://www.eleccircuit.com/xenon-strobe-light-110v-by-scr/ Is this a simple RC calculation?…
amandwato
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generating potentiometer adjustable, non-inverted voltage square pulses from microcontroller gpio output

I would like to generate a square signal with SW adjustable duty cycle, phase etc using the output pin of a microcontroller (3.3V). Frequency <100Hz. However, I also want the amplitude of the high state to be in ~ 2-7V range adjustable with a trim…
bekoch
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How does this strobe light circuit work?

I took apart the top of my strobe light and couldn’t exactly understand parts of the circuit. Could someone explain how it works? When the strobe is plugged in, it immediately starts flashing and doesn’t stop until unplugged. The three wires are…
RiFF RAFF
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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 50 Hz. I would like it to be able to illuminate an…
Seitam
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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 that all of the energy will inevitably make its…
Landon
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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'm hoping I can charge the capacitor while the LED…
Gus
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