I need GW Instek PSP-405 service manual and winding diagram please help - Page 1
Forum section: electronics / general

author: naserturk
author_rank: Newbie
timestamp: April 11, 2014, 03:30:35 pm
content: Hello everyoneI have good will instek PSP-405 programmable power supplyand I need service manual of this power supplyI need winding diagrams of switching transformers too because some one before me made a modification on them and I think I have to rewind themcan you please help me?

author: Carrington
author_rank: Super Contributor
timestamp: April 12, 2014, 07:19:13 pm
content: By chance, I found this. Is it what you need?http://probyte.fi/oscom/product_info.php?products_id=214&language=en

author: naserturk
author_rank: Newbie
timestamp: April 21, 2014, 05:57:36 pm
content: Thank you so muchBut I found it long time ago and talked to themTheir manual is the experience of themselves about this model repairing and winding diagram isn't included

author: Carrington
author_rank: Super Contributor
timestamp: April 21, 2014, 07:06:48 pm
content: Quote from: naserturk on April 21, 2014, 05:57:36 pmYou are welcome.Too bad.

author: grumpydoc
author_rank: Super Contributor
timestamp: May 02, 2014, 12:21:53 pm
content: BUMP (slightly).One of the problems with the PSP series is that there aren't any free schematics on the web.......However, I just noticed that the digital control boards in the batch of PSP-603's that I just bought are labelled "DPS4005 Digital Board V3.0" although they have firmware labelled PSP-603A bit of googling lead to the Voltcraft 4005 which would appear to be based on the same design and --- therearesome schematics available on the 'net.There are two schematics in the attached zip file - "Schaltplan_512020-sp-01-en-Switching_Power_Supply_DPS-4005PFC.pdf" appearsveryclose to the 603 with only minor nits such as the fact that the chopper transistors are listed as 2SC2625 whereas they are 2SC3320 in the 603's that I have. That does make me now completely happy that I found two 2SC2625's to replace the shorted transistors in one of the PSUs though.Unfortunately if you need magnetics details there aren't anyThe other file - "Schaltplan_DPS4005_Schaltplan.pdf" I'm guessing is the older version without PFC, it looks significantly different but does detail (at least some) of the magnetics. Well, there are some part numbers anyway.Chances are you have the PFC version but if not you might be in luck - it also gives you another model to google for. A quick look suggests that elektrotanya.com might have some more stuff on those PSUs.Edit: Elektrotanya has two documents for the 4005, one for theactive PFCversion which covers everything and oneherewhich is basically the same two diagrams as the first PDF in the zip I attached. However apart from the active PFC tacked on the front the diagrams look very similar to the PSP603's I have. I almost wonder whether there's any difference - they are all 200W supplies after all - just different hard limits on voltage and current in the firmware for the 60V 3.5A/40V 5A and 20V/10A versions.Also quite what "Schaltplan_DPS4005_Schaltplan.pdf" is I now wouldn't hazard a guess - it looks to be the SMPS part of something but totally different to the PSUs I have (which just have a passive choke for PFC). An way earlier version perhaps?

author: c_04
author_rank: Contributor
timestamp: April 14, 2018, 06:46:36 am
content: HiI have PSP-603 power supply but mine uses 8951 uC with separate board signed as DPS4005. Is there anyone who could share bin file for this uC. Today ive checked - my is blank. I can share bin file for eprom if needed. My is 27C512 rom is V.1.89.RegardsGreg