I've used these in the past, and marvelled at how they can withstand such a high voltage in such a small component. I decided to take one apart to see how it's made. I ended up taking more than one apart.
The construction is surprisingly simple, with a very retro alternative to resin potting.
The alternative triggering circuits I mentioned sometimes use the thyristor pulling the transformer common connection to the zero volt rail, or put the capacitor where I drew the thyristor and a sidac in series with the primary.
I dug out a more accurate set of calipers and remeasured the wires. Both transformers had a 0.28mm diameter (29AWG?) primary wire and a 0.12mm diameter (36AWG?) secondary wire.
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The construction is surprisingly simple, with a very retro alternative to resin potting.
The alternative triggering circuits I mentioned sometimes use the thyristor pulling the transformer common connection to the zero volt rail, or put the capacitor where I drew the thyristor and a sidac in series with the primary.
I dug out a more accurate set of calipers and remeasured the wires. Both transformers had a 0.28mm diameter (29AWG?) primary wire and a 0.12mm diameter (36AWG?) secondary wire.
If you enjoy these videos you can help support the channel with a dollar for coffee, cookies and random gadgets for disassembly at:-
https://www.patreon.com/bigclive (extra streams and channel interaction)
Or alternatively:-
http://www.bigclive.com/coffee.htm
This also keeps the channel independent of YouTube's advertising algorithms allowing it to be a bit more dangerous and naughty.
#ElectronicsCreators
Best piece of advice I ever received as a kid (that I listened to) was to "go down to your local drug store and ask if you can have some of the processed disposable cameras." 20 years later and I still have the box of around 100 pcb's from my haul! Each board has a trigger transformer and flash tube and it was so cool to see all the variations in parts and design from the major manufacturers.
A source for some interesting parts along these lines is the electronics you find in disposable cameras that are equipped with flash. If anybody is still using those, what with everybody having a camera in their phone these days. The ones I've seen have a little transformer of E-I construction IIRC.
Thanks for your explanation
kink palculator? sounds pinky.
I need just such a trigger xfmr…but with the coils isolated (4-wire). After watching your video, it seems an easy task to simply isolate the pri. and sec. windings simply by cutting a wire and re-assembling…perhaps with some isolation and maybe a replacement primary. Doable???
oh that was super informative, that layered voltage difference explanation was invaluable, thanks so much <3
can it be used with less voltage? Arduino pwm?? xD
Thanks you Sir.
Have you seen the new album cover for One Direction, it just shows a diode symbol?
Part number and link to product page??
👍
Is this something which can be used with ac and dc?
ye its verry tricky to slder it , yo uhave to do it quick otherwise too much heat will damage it, I usually buy few of those just in case
if you put the cap in series it should limit the current as well
Can you make an actual working xenon flash circuit with this? ☺️