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Need Help with capacitor markings

J

Joe

Jan 1, 1970
0
I have a few aluminum electrolytic caps that I took out of disposable flash
cameras. They are not marked with how many microfarads and voltage info,
just some numbers. I don't know why, there's plenty of room on them, but
does anyone know where I can find a site or source that will explain to me
what these markings mean?

I have googled for 'capacitor markings' and 'electrolytic capacitor
markings' and found some stuff but nothing that really explains what the
numbers mean, except for the small ceramics . I have a bunch of these and I
am going to start using them in one of my hairbrained projects soon but
didn't want them to explode. For example, they all have markings showing
where the negative terminal is, but then one has numbers on it as follows:
9649K, another says 589. They are from flash cameras, so they probly have
a pretty hefty voltage (couple of hundred volts) rating, but I would like to
know the capacitance if that info is possible to find out from these
numbers?

TIA,
Joe
 
J

Jerry G.

Jan 1, 1970
0
Most of the manufactures of these flashes use house numbers on their parts.
Get a hold of a capacitor meter, and take a reading of the cap. This is the
best way to know the capacitance.

The meter cannot tell you the maximum rated voltage of the cap. The voltage
rating of most flash caps is usually in the order of about 350 Volts and up.
I have seen many in the 400 to 450 Volt range.

--

Jerry G.
==========================


I have a few aluminum electrolytic caps that I took out of disposable flash
cameras. They are not marked with how many microfarads and voltage info,
just some numbers. I don't know why, there's plenty of room on them, but
does anyone know where I can find a site or source that will explain to me
what these markings mean?

I have googled for 'capacitor markings' and 'electrolytic capacitor
markings' and found some stuff but nothing that really explains what the
numbers mean, except for the small ceramics . I have a bunch of these and I
am going to start using them in one of my hairbrained projects soon but
didn't want them to explode. For example, they all have markings showing
where the negative terminal is, but then one has numbers on it as follows:
9649K, another says 589. They are from flash cameras, so they probly have
a pretty hefty voltage (couple of hundred volts) rating, but I would like to
know the capacitance if that info is possible to find out from these
numbers?

TIA,
Joe
 
J

Joe

Jan 1, 1970
0
Thanks Jerry,

My capacitance meter only goes up to 100uF. Maybe if I put them into a
circuit with a known inductor and sweep a signal till I get resonance, then
calculate. That might work, I have done it with unknown inductors before.

Joe
 
C

C

Jan 1, 1970
0
Joe said:
Thanks Jerry,

My capacitance meter only goes up to 100uF. Maybe if I put them into a
circuit with a known inductor and sweep a signal till I get resonance, then
calculate. That might work, I have done it with unknown inductors before.

Joe


and like

It's probally not much help, but I have some flash camera capacitors. They
are made by Rubycon and are rated at 330V and 120uF. To get the voltage I
would just measure the voltage the camera supplies to the capacitor (if you
have access to the circuit). It's probally not the maximum voltage, but it
would still be high (I guess).
 
J

Joe

Jan 1, 1970
0
C said:
to

It's probally not much help, but I have some flash camera capacitors. They
are made by Rubycon and are rated at 330V and 120uF. To get the voltage I
would just measure the voltage the camera supplies to the capacitor (if you
have access to the circuit). It's probally not the maximum voltage, but it
would still be high (I guess).

Hey C,

Thanks. Yes, I have a few rubycons, they are in the kodak max flash cameras.
These were from some no name camera.

The physical size of my unknowns is not that much different, but I don't
think I will need to charge them past 250V anyway.

Joe
 
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