Rectifier wiring

[Ignoramus14602]

I have this rectifier: GPBC 50A

http://tinyurl.com/25fmjfu

It has four terminals, but they are not marked. The datasheet is pretty
sparse, too. Which of them are AC and which are DC?

i

 

[Ned Simmons]

On Thu, 01 Jul 2010 18:16:14 -0500, Ignoramus14602
<ignoramus14602@NOSPAM.14602.invalid> wrote:

I have this rectifier: GPBC 50A

http://tinyurl.com/25fmjfu

It has four terminals, but they are not marked. The datasheet is pretty
sparse, too. Which of them are AC and which are DC?

You can figger it out in a minute or two with your DMM.

--
Ned Simmons

 

[Winston]

On 7/1/2010 4:16 PM, Ignoramus14602 wrote:

I have this rectifier: GPBC 50A

http://tinyurl.com/25fmjfu

It has four terminals, but they are not marked. The datasheet is pretty
sparse, too. Which of them are AC and which are DC?

Put your multimeter in 'junction test' continuity mode.
(Normally indicated by a diode symbol.)
Test across every terminal combination of both polarities
until you locate the diodes as they conduct in forward
direction (Red + to Anode, Black - to Cathode) and as
they block in reverse direction (Red + to Cathode, Black -
to Anode). Write down each reading on a large sketch
of the part and all will be revealed.

It'll prolly end up looking a lot like:
http://www.fairchildsemi.com/ds/GB/GBPC12005.pdf

--Winston

 

[BQ340]

On 7/1/2010 7:16 PM, Ignoramus14602 wrote:

I have this rectifier: GPBC 50A

http://tinyurl.com/25fmjfu

It has four terminals, but they are not marked. The datasheet is pretty
sparse, too. Which of them are AC and which are DC?

i

Usually the clipped corner (or terminal that is not oriented the same as
the other 3) is the positive & the diagonal opposite is negative. The
other 2 are the AC.

<http://www.softwareforeducation.com/electronics/notes/AS/Diode/bridge-rectifier.jpg>

MikeB

 

[Spehro Pefhany]

On Thu, 01 Jul 2010 18:16:14 -0500, the renowned Ignoramus14602
<ignoramus14602@NOSPAM.14602.invalid> wrote:

I have this rectifier: GPBC 50A

http://tinyurl.com/25fmjfu

It has four terminals, but they are not marked. The datasheet is pretty
sparse, too. Which of them are AC and which are DC?

i

The one on the chamfered corner that's at 90° to the rest is the +,
the one _diaagonally_ opposite is the -, and the other two are the AC
input terminals.

Check it on 12VDC with a small light bulb in series to be sure. You
should measure 11VDC or so out with the + terminal as I said,
regardless of the polarity of the input (and, of course, the series
light should never light up (!)).

As Ned said, this is easily figured out with a DMM that has a diode
check range, but compare it with a regular diode to be sure of the
polarity. Most digital DMMs have the red lead source positive voltage,
and most analog VOMs are the opposite.

http://www.repairfaq.org/sam/semitest.htm#sttdj

Obviously if you get it wrong you'll probably kill the bridge or cause
the capacitor to vent its lifeblood.


Best regards,
Spehro Pefhany
--
"it's the network..." "The Journey is the reward"
speff@interlog.com Info for manufacturers: http://www.trexon.com
Embedded software/hardware/analog Info for designers: http://www.speff.com

 

On Thu, 01 Jul 2010 18:16:14 -0500, Ignoramus14602
<ignoramus14602@NOSPAM.14602.invalid> wrote:

I have this rectifier: GPBC 50A

http://tinyurl.com/25fmjfu

It has four terminals, but they are not marked. The datasheet is pretty
sparse, too. Which of them are AC and which are DC?

i

The GBPC case seems to use the angled corner as the + indicator. See
this datasheet: http://www.vishay.com/docs/88612/gbpc12.pdf

John

 

[Lloyd E. Sponenburgh]

Ignoramus14602 <ignoramus14602@NOSPAM.14602.invalid> fired this volley in
news:7NSdneQgVuYjvLDRnZ2dnUVZ_radnZ2d@giganews.com:

http://tinyurl.com/25fmjfu

They ARE marked, Iggy. The corner miter usually denotes the + output lead.

LLoyd

 

[Pete C.]

Ignoramus14602 wrote:

I have this rectifier: GPBC 50A

http://tinyurl.com/25fmjfu

It has four terminals, but they are not marked. The datasheet is pretty
sparse, too. Which of them are AC and which are DC?

i

Have you looked on the *top* of the case?

 

[Karl Townsend]

....

Obviously if you get it wrong you'll probably kill the bridge or cause
the capacitor to vent its lifeblood.
`...

You guys are taking all the excitement out of Iggy's life. Just hook it up,
the smoke will come out if its wrong, then do something else. Like the time
I tried a start cap in the run cap position on my three phase converter.
Now, I know the difference.

Karl

 

[Ignoramus14602]

On 2010-07-01, Ignoramus14602 <ignoramus14602@NOSPAM.14602.invalid> wrote:

I have this rectifier: GPBC 50A

http://tinyurl.com/25fmjfu

It has four terminals, but they are not marked. The datasheet is pretty
sparse, too. Which of them are AC and which are DC?

I figured it out. Thanks to all. The power supply is now working
nicely.

i

 

[Ignoramus14602]

On 2010-07-02, Karl Townsend <karltownsend.NOT@embarqmail.com> wrote:

...
Obviously if you get it wrong you'll probably kill the bridge or cause
the capacitor to vent its lifeblood.
`...

You guys are taking all the excitement out of Iggy's life. Just hook it up,
the smoke will come out if its wrong, then do something else. Like the time
I tried a start cap in the run cap position on my three phase converter.
Now, I know the difference.

I know the fun feeling. In about 0.1 seconds after a loud BANG I know
that something went very wrong.

i

 

On Thu, 01 Jul 2010 18:16:14 -0500, Ignoramus14602
<ignoramus14602@NOSPAM.14602.invalid> wrote:

I have this rectifier: GPBC 50A

http://tinyurl.com/25fmjfu

It has four terminals, but they are not marked. The datasheet is pretty
sparse, too. Which of them are AC and which are DC?

Use your ohm meter to check the polarity of the 4 diodes. The AC

goes to the points where the positive and negative diodes join.
You get DC+ where the 2 positive diodes joinn, and DC- whre the
negative diodes join. GENERALLY the cut off corner, if present, is one
of the DC terminals.

 

[DoN. Nichols]

On 2010-07-01, Ignoramus14602 <ignoramus14602@NOSPAM.14602.invalid> wrote:

I have this rectifier: GPBC 50A

http://tinyurl.com/25fmjfu

It has four terminals, but they are not marked. The datasheet is pretty
sparse, too. Which of them are AC and which are DC?

The terminal nearest the corner which is cut off is the positive
output. (Also, it is at right angles to the other three) The diagonally
opposite one is the negative. The other two are AC input.

You can verify this with a multimeter in the ohms or the
diode-check positions. Positive probe on the negative terminal will
show conduction to the other two adjacent terminals. Negative probe on
the Positive terminal will show conduction to the other two adjacent
terminals.

The diodes are arranged pretty much like the schematic symbol
for a bridge rectifier, and surround the center mounting hole as shown
here. Always positive and negative are opposite corners, and the AC
inputs are the other two corners. Something will mark the positive
terminal as different -- here the cut corner and the blade being at
right angles to the rest of the blades. Sometimes there is a red dot by
the positive terminal, black near the negative (except on black potting
epoxy), and yellow on the two AC inputs.

I guess that they did not spell this out on the data sheet
because it is so common a construction -- and has been for at least
forty years or so. Or -- it might be spelled out somewhere else in the
Comchip products manual -- and you only have two pages out of that
manual.

Enjoy,
DoN.

--
Email: <dnichols@d-and-d.com> | Voice (all times): (703) 938-4564
(too) near Washington D.C. | http://www.d-and-d.com/dnichols/DoN.html
--- Black Holes are where God is dividing by zero ---

 

[LSMFT]

Karl Townsend wrote:

...
Obviously if you get it wrong you'll probably kill the bridge or cause
the capacitor to vent its lifeblood.
`...

You guys are taking all the excitement out of Iggy's life. Just hook it up,
the smoke will come out if its wrong, then do something else. Like the time
I tried a start cap in the run cap position on my three phase converter.
Now, I know the difference.

Karl



I did that once; KaBang it went.

--
LSMFT

I haven't spoken to my wife in 18 months.
I don't like to interrupt her.

 

[PeterD]

On Fri, 02 Jul 2010 07:47:49 -0400, LSMFT <boleyn7@aol.com> wrote:

Karl Townsend wrote:
...
Obviously if you get it wrong you'll probably kill the bridge or cause
the capacitor to vent its lifeblood.
`...

You guys are taking all the excitement out of Iggy's life. Just hook it up,
the smoke will come out if its wrong, then do something else. Like the time
I tried a start cap in the run cap position on my three phase converter.
Now, I know the difference.

Karl



I did that once; KaBang it went.

Da KaBang I can handle, it's cleaning up the mess afterwards that is a
PITA!

 

[Karl Townsend]

"PeterD" <peter2@hipson.net> wrote in message
news:rclr265v7c4bdt9mu8am213hv92p18qutf@4ax.com...

On Fri, 02 Jul 2010 07:47:49 -0400, LSMFT <boleyn7@aol.com> wrote:

Karl Townsend wrote:
...
Obviously if you get it wrong you'll probably kill the bridge or cause
the capacitor to vent its lifeblood.
`...

You guys are taking all the excitement out of Iggy's life. Just hook it
up,
the smoke will come out if its wrong, then do something else. Like the
time
I tried a start cap in the run cap position on my three phase converter.
Now, I know the difference.

Karl



I did that once; KaBang it went.

Da KaBang I can handle, it's cleaning up the mess afterwards that is a
PITA!

Are you talking about the mess in your shorts?

Karl

 

[Jeffrey D Angus]

Ignoramus14602 wrote:

I have this rectifier: GPBC 50A

http://tinyurl.com/25fmjfu

It has four terminals, but they are not marked. The datasheet is pretty
sparse, too. Which of them are AC and which are DC?

i

Try this data sheet:
http://www.nteinc.com/specs/53000to53099/pdf/nte53016_20.pdf

If you part has the same internal connections, you should be
able to use an ohm meter to see a diode between AC & + and
AC & -, and an open between AC & AC.

Jeff


--
“Egotism is the anesthetic that dulls the pain of stupidity.”
Frank Leahy, Head coach, Notre Dame 1941-1954

http://www.stay-connect.com

 

[Uffe Bćrentsen]

"Karl Townsend" <karltownsend.NOT@embarqmail.com> skrev i en meddelelse
news:4c2e0047$0$77568$892e0abb@auth.newsreader.octanews.com...

"PeterD" <peter2@hipson.net> wrote in message
news:rclr265v7c4bdt9mu8am213hv92p18qutf@4ax.com...
On Fri, 02 Jul 2010 07:47:49 -0400, LSMFT <boleyn7@aol.com> wrote:

Karl Townsend wrote:
...
Obviously if you get it wrong you'll probably kill the bridge or cause
the capacitor to vent its lifeblood.
`...

You guys are taking all the excitement out of Iggy's life. Just hook it
up,
the smoke will come out if its wrong, then do something else. Like the
time
I tried a start cap in the run cap position on my three phase
converter.
Now, I know the difference.

Karl



I did that once; KaBang it went.

Da KaBang I can handle, it's cleaning up the mess afterwards that is a
PITA!

Are you talking about the mess in your shorts?

*LOL*

That's a good one Karl



--
Uffe Bćrentsen

 

On Fri, 2 Jul 2010 21:47:11 +0200, "Uffe BĂŚrentsen"
<leiti_NOSPAM_@hotmail.com> wrote:

"Karl Townsend" <karltownsend.NOT@embarqmail.com> skrev i en meddelelse
news:4c2e0047$0$77568$892e0abb@auth.newsreader.octanews.com...

"PeterD" <peter2@hipson.net> wrote in message
news:rclr265v7c4bdt9mu8am213hv92p18qutf@4ax.com...
On Fri, 02 Jul 2010 07:47:49 -0400, LSMFT <boleyn7@aol.com> wrote:

Karl Townsend wrote:
...
Obviously if you get it wrong you'll probably kill the bridge or cause
the capacitor to vent its lifeblood.
`...

You guys are taking all the excitement out of Iggy's life. Just hook it
up,
the smoke will come out if its wrong, then do something else. Like the
time
I tried a start cap in the run cap position on my three phase
converter.
Now, I know the difference.

Karl



I did that once; KaBang it went.

Da KaBang I can handle, it's cleaning up the mess afterwards that is a
PITA!

Are you talking about the mess in your shorts?

*LOL*

That's a good one Karl
If you don't get that mess cleaned up pronto, it IS a PITA.

 

[PeterD]

On Fri, 2 Jul 2010 10:05:49 -0500, "Karl Townsend"
<karltownsend.NOT@embarqmail.com> wrote:

"PeterD" <peter2@hipson.net> wrote in message
news:rclr265v7c4bdt9mu8am213hv92p18qutf@4ax.com...
On Fri, 02 Jul 2010 07:47:49 -0400, LSMFT <boleyn7@aol.com> wrote:

Karl Townsend wrote:
...
Obviously if you get it wrong you'll probably kill the bridge or cause
the capacitor to vent its lifeblood.
`...

You guys are taking all the excitement out of Iggy's life. Just hook it
up,
the smoke will come out if its wrong, then do something else. Like the
time
I tried a start cap in the run cap position on my three phase converter.
Now, I know the difference.

Karl



I did that once; KaBang it went.

Da KaBang I can handle, it's cleaning up the mess afterwards that is a
PITA!

Are you talking about the mess in your shorts?

Karl

<bg> Ever cleaned up a blown cap? Fluff and foil everywhere!