Replacing a cap in a Powersupply

G

Gabi Klein

Guest
Hi!

I have a small power supply.
Input - 220v
Output 5v/3A.
The filter cap needs to be replaced.
It is 400v/33uF
I cannot find this cap around here.
Can I put smaller or larger capactiance cap instead?

Thanks ahead,
Gabi
 
In most cases you should be able to use any cap that is equal or higher in
the voltage rating. As for the cap value, depending on the design you can
exceed the microfarad value. If it is a simple filter cap, the tolerance
for the microfarad value can be wide. If a larger cap, such as a 47 uF will
physical fit, this should work in most cases.

If the cap is in a critical circuit that is for example, forming a time
value, or in a feedback circuit of some type, the value will usually be
critical. As for the value you are asking about, this is fairly common in
both 400 Volts, and 450 Volts. The value of 33 uF is extremely common.

--

Greetings,

Jerry Greenberg GLG Technologies GLG
=========================================
WebPage http://www.zoom-one.com
Electronics http://www.zoom-one.com/electron.htm
Instruments http://www.zoom-one.com/glgtech.htm
=========================================


"Gabi Klein" <klein_gabi@hotmail.com> wrote in message
news:bl2crm$ntv$1@news2.netvision.net.il...
Hi!

I have a small power supply.
Input - 220v
Output 5v/3A.
The filter cap needs to be replaced.
It is 400v/33uF
I cannot find this cap around here.
Can I put smaller or larger capactiance cap instead?

Thanks ahead,
Gabi
 
"Gabi Klein" <klein_gabi@hotmail.com> wrote in message
news:bl2crm$ntv$1@news2.netvision.net.il...
Hi!

I have a small power supply.
Input - 220v
Output 5v/3A.
The filter cap needs to be replaced.
It is 400v/33uF
I cannot find this cap around here.
Can I put smaller or larger capactiance cap instead?

Thanks ahead,
Gabi
Click to expand...
You shouldn't have a hard time finding that capacitor.. it's still very
available. www.mouser.com stocks that value in both axial and radial
styles, from several manufacturers. I haven't looked, but www.digikey,
www.alliedelec.com, and others probably stock them too.. You just have to
use the net and let your mouse do the walking.
--
Tweetldee
Tweetldee at att dot net (Just subsitute the appropriate characters in the
address)

Never take a laxative and a sleeping pill at the same time!!
 
Tweeldee, thanks for reply.

It's easy to say that it is available on the net, when you are in the us.

I'm not.
I is a bit hard to buy a 20cent cap, and pay 40USD for shipping.

I couldn't find it in my country, so I'm asking if I can replace with other
values.

Again, thanks,
Gabi
"Tweetldee" <dgmason99@att99.net> wrote in message
news:h43db.160138$3o3.11456009@bgtnsc05-news.ops.worldnet.att.net...
"Gabi Klein" <klein_gabi@hotmail.com> wrote in message
news:bl2crm$ntv$1@news2.netvision.net.il...
Hi!

I have a small power supply.
Input - 220v
Output 5v/3A.
The filter cap needs to be replaced.
It is 400v/33uF
I cannot find this cap around here.
Can I put smaller or larger capactiance cap instead?

Thanks ahead,
Gabi



You shouldn't have a hard time finding that capacitor.. it's still very
available. www.mouser.com stocks that value in both axial and radial
styles, from several manufacturers. I haven't looked, but www.digikey,
www.alliedelec.com, and others probably stock them too.. You just have
to
use the net and let your mouse do the walking.
--
Tweetldee
Tweetldee at att dot net (Just subsitute the appropriate characters in
the
address)

Never take a laxative and a sleeping pill at the same time!!
Click to expand...
 
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