[simpits-tech] PSUs
Suwanrit In-on
simpits-tech@simpits.org
Fri, 27 Dec 2002 03:40:11 +0700
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You can add big diode in serie with output voltage of each PSUs.
Reminder, diode forward current should big enough and voltage will drop
across diode about 0.6 volt.
Suwanrit.
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cc: (bcc: Suwanrit In-on/TH/Asia/Celestica)
Subject: [simpits-tech] PSUs
if you put things in parallel you add the current and voltage stay the
same, but in serial you add the voltage and currnet stay the same -
thats generally speaking...
some words of caution, when putting PSUs in parallel you need to
establish a common reference point (connect the "earth" eg the "3rd pin"
of the power plug) for all PSUs, otherwise nasty things might occur,
such as high voltage (55v at 110v ac or 115v at 230v ac) on the cases -
and used the same ac outlet otherwise if the PSU is not 100% percent
stable (riple free) the might "fight" each other due to phase shifts...
/Stig
-----Original Message-----
From: Joseph Fagner [mailto:crease-guard@attbi.com]
Sent: 26. december 2002 08:07
To: simpits-tech@simpits.org
Subject: RE: [simpits-tech] Resistor for LEDs?
Also, isn't there a way to wire power supplies together such that the
supply voltage stays the same but the amperage is cumulative? Same way
for constant current and cumulative voltage. One is parallel and the
other is series, I just can't remember which.
Jay
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<br><font size=2 face="sans-serif">You can add big diode in serie with output voltage of each PSUs.</font>
<br><font size=2 face="sans-serif">Reminder, diode forward current should big enough and voltage will drop across diode about 0.6 volt.</font>
<br>
<br><font size=2 face="sans-serif">Suwanrit.</font>
<br>
<br>
<br>
<p><font size=1 color=#800080 face="sans-serif">Please respond to simpits-tech@simpits.org</font>
<p><font size=1 color=#800080 face="sans-serif">Sent by: simpits-tech-admin@simpits.org</font>
<p><font size=1 color=#800080 face="sans-serif">To: </font><font size=1 face="sans-serif"><simpits-tech@simpits.org></font>
<br><font size=1 color=#800080 face="sans-serif">cc: </font><font size=1 face="sans-serif">(bcc: Suwanrit In-on/TH/Asia/Celestica)</font>
<br>
<br><font size=1 color=#800080 face="sans-serif">Subject: </font><font size=1 face="sans-serif">[simpits-tech] PSUs</font>
<br>
<br><font size=2 face="Courier New">if you put things in parallel you add the current and voltage stay the<br>
same, but in serial you add the voltage and currnet stay the same -<br>
thats generally speaking...<br>
<br>
some words of caution, when putting PSUs in parallel you need to<br>
establish a common reference point (connect the "earth" eg the "3rd pin"<br>
of the power plug) for all PSUs, otherwise nasty things might occur,<br>
such as high voltage (55v at 110v ac or 115v at 230v ac) on the cases -<br>
and used the same ac outlet otherwise if the PSU is not 100% percent<br>
stable (riple free) the might "fight" each other due to phase shifts...<br>
<br>
/Stig<br>
<br>
-----Original Message-----<br>
From: Joseph Fagner [mailto:crease-guard@attbi.com]<br>
Sent: 26. december 2002 08:07<br>
To: simpits-tech@simpits.org<br>
Subject: RE: [simpits-tech] Resistor for LEDs?<br>
<br>
<br>
Also, isn't there a way to wire power supplies together such that the<br>
supply voltage stays the same but the amperage is cumulative? Same way<br>
for constant current and cumulative voltage. One is parallel and the<br>
other is series, I just can't remember which.<br>
<br>
Jay<br>
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Simpits-tech@simpits.org<br>
http://www.simpits.org/mailman/listinfo/simpits-tech<br>
To unsubscribe, please see the instructions at the bottom of the above page. Thanks!<br>
</font>
<br>
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