A little sourcing help

[DaLarry]

I'm having a tough time finding photo flash caps with the values I need. They need to be at least 750uf + / 360V +. I need 6 of them. I found 5 suitable ones on Well Gains website, but only five. Anyone have any ideas?

 

[!]

Mouser seems to have a few to choose from, if the link doesn't wok just browse through their parametric search to find them;

Mouser Electronics - Electronic Component Distributor Capacitors

 

[DaLarry]

Mouser was actually the first place I looked. I saw lots of electrolytic choices but very few photo flash choices. I'll look again. Thanx.

 

[!]

I didn't look for "photo flash", just voltage and capacitance. I don't usually see photo flash caps that high in capacitance, they are fairly large to be in a flash module.

 

[DaLarry]

I understand. They are hard to find but those are what are installed in the power supply of my GSI modded Dynaco ST-70. Hard to find and problematic to replace.

 

[digits]

Little odd value there on the voltage, common voltages in that range are 350V, 385V and 400V and values 820uf and 1000uf

 

[DaLarry]

Little odd value there on the voltage, common voltages in that range are 350V, 385V and 400V and values 820uf and 1000uf

Any of those would work. Where can I find them? I should add that although I've done electronics kits/projects before, I'm not really an electronics geek, but that's what my electronics guru tells me I need. Thanx to all of you for your help.

 

[digits]

RS components

 

[DaLarry]

RS components

Thanx! I see they are in the UK and their website is down. I'll send an email to the Irish email contact.

 

[digits]

They have a US outlet too, just goole RS components USA

 

[!]

Is there really anything special about "photo flash" capacitors (I don't know)... I was under the impression they were simply long and thin to fit on the side of a flash unit (besides the high voltage)

 

[Michael Chua]

Yes, photoflash caps are special. They are designed for continuous Instant discharge. They must also be able to recharge quickly without blowing up. Normal caps can't meet this kind of demands.

A word of caution working on photoflash. Even a small camera mounted flash can give you quite a jolt if the caps are not discharged. For flash generators (power packs), it's advisable to send it to a professional for repairs. Fully charged 700-1000V caps are to be taken seriously.

 

[DaLarry]

Preaching to the choir

Yes, photoflash caps are special. They are designed for continuous Instant discharge. They must also be able to recharge quickly without blowing up. Normal caps can't meet this kind of demands.

A word of caution working on photoflash. Even a small camera mounted flash can give you quite a jolt if the caps are not discharged. For flash generators (power packs), it's advisable to send it to a professional for repairs. Fully charged 700-1000V caps are to be taken seriously.

That's my understanding as well. As for safety, you're preaching to the choir It is a wise man who recognizes his own limitations. My tube buddy/guru is a retired tech who started his TV and Radio repair business right after the Korean War. I found him because he is a Grundig expert and I am a Grundig afficianado/collector. I do all of the computer work for him and his sister, and he does all my tube stuff.

 

[jackinnj]

I have a box of these 680uF/350V (400pk) LPX681M350H4P3

 

[sofaspud]

designed for continuous Instant discharge.

Not questioning its veracity, just noting that that is an interesting concept.

 

[DaLarry]

I have a box of these 680uF/350V (400pk) LPX681M350H4P3

Thanx! I'll check with my tech guy and see if these are suitable. BTW, I need 6; how much are you asking for them?