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'[OT]help with supply'
1997\09\13@173116 by Rick Trostel

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I picked up a LAMBDA  dual regulated power supply at a yard sale today.
I thought it would be perfect for PIC projects.

On the back of the unit there is two terminal strips with 8 terminals in each
one.

on the left side, it's marked from 1 to 8 from bottom to top.
on the right side it's marked from 9 to 16 from bottom to top.

something like this:
8  PO                   16  PO
7  S+                    15  S+
6  DC+                  14  DC+
5  RP                    13  RP
4  DC-                   12  DC-
3  -S                     11  S-
2  AT                    10
1  GND                  9

There are jumpers on pins :
6-7
3-4
11-12
14-15
9-10

On the front there is terminals for V+ , Gnd,  V-
and knobs for adjusting Volts and Current limiting, and a readout for both
sides.

You can turn the voltage up and down on the display but I can't get anything
out of the front terminals.

Does anyone know how to configure the back to send the juice to the front
terminals?

Thanks ------------ Rich

1997\09\13@221431 by Mike Keitz

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On Sat, 13 Sep 1997 17:29:36 -0400 Rick Trostel <spam_OUTRTrostelTakeThisOuTspamAOL.COM>
writes:
>I picked up a LAMBDA  dual regulated power supply at a yard sale
>today.
>I thought it would be perfect for PIC projects.
>

>On the front there is terminals for V+ , Gnd,  V-
>and knobs for adjusting Volts and Current limiting, and a readout for
>both
>sides.
>
>You can turn the voltage up and down on the display but I can't get
>anything
>out of the front terminals.

The DC+/S+ and DC-/S- are the output of each supply (very likely the two
sections are completely isolated from each other).  The S terminals are
provided for remote sensing (a technique to compensate for voltage drop
in long wires from the supply to the load).  Ordinarily leave them
jumpered.  The RP terminal is likely "Remote Program", for setting the
output voltage with an external resistor or network.  Since the front
panel control apparently works just use it and leave "RP" open.  I don't
know what PO an AT would be  (Maybe "Power On" and "Attention?") but you
probably don't need them either.

>Does anyone know how to configure the back to send the juice to the
>front
>terminals?

Maybe "PO" is "Panel Out" connected to the front panel + terminal (either
AT or GND would be the minus terminal then).  This could be checked with
an ohmmeter.  Measure the voltage at the DC/S terminal pairs, it should
correspond to the meter reading.  You could just run wires around from
the back terminals to power your circuit.  If you really want to use the
front terminals you may need to take the cover off (hopefully I'm not
insulting your intelligence by suggesting pulling the plug first) and try
to trace the wires from them.  There may be jumpers inside that
disconnect the front panel ouptuts for example if the supply is used in a
rack system.

1997\09\14@114729 by Steve Smith

picon face
Maybe "PO" is "Panel Out" connected to the front panel + terminal (either
AT or GND would be the minus terminal then).
This one is not the same as one I have but the PO terminal on mine is used
for current shareing when many units are opperated in parellel 'Parellel
Opperation' If you trace it back it should go to the input of an op-amp.

Cheers Steve.....

1997\09\15@134044 by )

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face
Rick Trostell wrote:

<snip>


> I picked up a LAMBDA  dual regulated power supply at a yard sale
> today.
> I thought it would be perfect for PIC projects.
>
       <snip>

{Quote hidden}

Sorry Rich, I don't think you have what you think you have. On quite a
few Lambda supplies, the ground terminal is simply chassis ground - not
a common for V+ and V-. Your power supply is probably a single output
only. Connect a meter across V+ and V- and see if it matches the meter
on the supply - bet it does.


Frank Richterkessing

.....FRANK.RICHTERKESSINGKILLspamspam@spam@APPL.GE.COM

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