There are a couple of smoked resistors on the regulator board. I can not
trust the ohm meter reading so I wanted to verify its value. I am trying to
avoid De-engineering the board. Now once the resistors are replace there
may be something else that smoked the resistors too.

Paul.

"PS_DUDE" wrote in message
...
hi paul,

Tripp lite makes good supplies but lacks in the
support side !

Good thing is the supplies use off the shelf parts
or easy substituted parts from anywhre,
http://www.mouser.com etc.

What problem(s) are you having ?

73 ps dude

"Paul P" wrote in
message ...
There are a couple of smoked resistors on the regulator board. I can not
trust the ohm meter reading so I wanted to verify its value. I am trying
to avoid De-engineering the board. Now once the resistors are replace
there may be something else that smoked the resistors too.

Paul.


Paul -

Where are these resistors .. the typical linear supply has low ohm
equalizing resistors across the NPN pass transistors .. and only a few in
the regulation circuit off the LM723 pins .. for example a 1 K is usually
used from pin 4 to the voltage adjustment potentiometer.

gb

Paul P wrote:
There are a couple of smoked resistors on the regulator board. I can not
trust the ohm meter reading so I wanted to verify its value. I am trying to
avoid De-engineering the board. Now once the resistors are replace there
may be something else that smoked the resistors too.

Paul.


Here's a link to an Astron supply:
http://www.seits.org/features/pwrsup.htm

Assuming a typical 723 == pass transistors linear supply,
it shouldn't be hard to figure out the values of the cooked
resistors. The schematic at the link above serves well as a
model for many (most?) of that type of supply. Combined
with the LM723 datasheet, you can fix it.

Ed




"PS_DUDE" wrote in message
...

hi paul,

Tripp lite makes good supplies but lacks in the
support side !

Good thing is the supplies use off the shelf parts
or easy substituted parts from anywhre,
http://www.mouser.com etc.

What problem(s) are you having ?

73 ps dude