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ArthurDent:

--- Quote from: dcbrown73 on August 01, 2019, 01:37:20 pm ---I know a lot of you guys have the big higher end stuff, but I'm just a home hobbyist. 

I just picked up a GW Instek GPD-3303S for $199. (+$20 shipping) I was considering a brand new one at well over twice the price.  I'm pretty excited to have gotten it.



--- End quote ---

By coincidence I also bought one of the GPD-3303S supplies on eBay from that same seller in Maryland and it arrived today. They are a nice supply and in good condition.

If you check the forums you will see that there are 2 versions of this supply where the newer one was redesigned so both the GPD-3303S three output and the GPD4303S four output could use a lot of common parts, including the same main circuit board. From what I read it appears that there was a bug that crept in with the new design that caused some problems. Both you and I got the older version that works like it should. My supply seems to be pretty darn close but I think I'll go through the long calibration procedure in the service manual and check everything out. 
YU7C:

--- Quote from: Ice-Tea on August 01, 2019, 07:40:14 am ---Well...  8)



--- End quote ---

Excellent composition, shades, light, ...,. Guy you have a talent!

Vojiskav
dcbrown73:

--- Quote from: ArthurDent on August 02, 2019, 05:42:17 pm ---By coincidence I also bought one of the GPD-3303S supplies on eBay from that same seller in Maryland and it arrived today. They are a nice supply and in good condition.

If you check the forums you will see that there are 2 versions of this supply where the newer one was redesigned so both the GPD-3303S three output and the GPD4303S four output could use a lot of common parts, including the same main circuit board. From what I read it appears that there was a bug that crept in with the new design that caused some problems. Both you and I got the older version that works like it should. My supply seems to be pretty darn close but I think I'll go through the long calibration procedure in the service manual and check everything out.

--- End quote ---

Nice, mine arrived pretty tightly dialed in too.  I believe it said they were refurbishing them.   So far I'm very happy with it.
bitseeker:

--- Quote from: ArthurDent on August 02, 2019, 05:42:17 pm ---
--- Quote from: dcbrown73 on August 01, 2019, 01:37:20 pm ---I know a lot of you guys have the big higher end stuff, but I'm just a home hobbyist. 

I just picked up a GW Instek GPD-3303S for $199. (+$20 shipping) I was considering a brand new one at well over twice the price.  I'm pretty excited to have gotten it.



--- End quote ---

By coincidence I also bought one of the GPD-3303S supplies on eBay from that same seller in Maryland and it arrived today. They are a nice supply and in good condition.

If you check the forums you will see that there are 2 versions of this supply where the newer one was redesigned so both the GPD-3303S three output and the GPD4303S four output could use a lot of common parts, including the same main circuit board. From what I read it appears that there was a bug that crept in with the new design that caused some problems. Both you and I got the older version that works like it should. My supply seems to be pretty darn close but I think I'll go through the long calibration procedure in the service manual and check everything out.

--- End quote ---

Correct. The newer model, which doesn't have any gaps between channels, has an overshoot issue. I don't recall any more which channel it was. The older models is fine. I do recall there was a thread with some potential fixes to the overshooting, in case anyone has the problematic variation.
yo0:
3 fluke dmms $66.90usd free shipping, they just needed cleaning. now i need find some good 8012a and  8010m-05 to complete the collection  ;D

best regards


Pio
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