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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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