OWON SPM6103

[@945-b2m]

Yes! A full review would be great.

[@john_in_phoenix]

Certainly very reasonable accuracy for the price. I would like to see more, please.

[@andymouse]

Seems a nice build, it's good to see the use of silicone in the correct places and used sparingly, as opposed to plastered in it and of course it's reasonably accurate as this cheap stuff either works or it dosent.

[@JerryWalker001]

I agree, I often see cheaper equipment where it looks like they applied the sealant by detonating a tube of the stuff somewhere near the board.

[@andymouse]

@@JerryWalker001 :)

[@MarcelHuguenin]

Hi Jerry. I bought one a couple of months ago and am quite happy with it. I also noticed the accuracy when I measured it with my trusty and very accurate Fluke 8840A. As a hobbyist it's more than adequate for me and I happen to also use it next to my RD6006. It is as you said really quite light and small and it would fit 2 of these on the footprint of the RD unit and then have 2 multimeters as well. I would me more then happy to see more of your tests of this unit. There will certainly be bits that you come across and don't like (Spoiler alert, Function keys?). Anyway, I don't mind but I would like to hear your thoughts on that.

[@ericksonengineering7011]

Thanks, great intro to a new problem-solving product. I had a similar problem, my good lab supplies seem like they are always tied up. This is a great, small, reasonably priced, solution. I recently bought a cheap Korad linear supply. Now a bit of buyers remorse. But can always use one more power supply.

[@JerryWalker001]

Yes you always seem to need more power supplies.

[@davidv1289]

Thank you for another informative video, a good looking supply. Combining the supply with a logging DVM is a great idea. I would be interested to know how well it regulates and how much noise gets through to the output - a short video or in combination with one of your repair videos. Regards, David

[@dimBulb5]

Thanks for sharing! Any thoughts on ripple and noise?

[@Janktzoni]

It is curious that the voltage reading of the power supply part tends to be more precise than the build in DMM. For the price I guess this thing is good enough. What about ripple and noise? What about recovery time after change of load? What about stability when the mains voltage fluctuates? What about input protection, for example when a battery gets connected the wrong way? Is there any OVP? Drift over time and/or temperature? No Sense leads? With over a couple of amps that really becomes an important point.

[@rs3800]

I also just bought this nice power supply and I am happy that the fan control is doing a good job (-> Fan off) before it’s getting warm. Then the control is a bit weird close to the idle rpm, it makes strange noises to keep the fan running at the very low rpm. Does Owon supply Firmware updates?

[@extraid]

Thanks for the review. I bought the 110 volt version SPE6103 ( main board the same as SPM). It is cheaper by 15-20 euros when 230v version. It is easy to convert to 230. Need cut off one jumper on the board and change the fuse from 10 to 5 Amperes. No need to change the varistor, even on the 110 volt version have 14D561K!

[@JerryWalker001]

Interesting. When I purchased it the 230v version was the only one available. Maybe it depends where you buy it. The SPE does not have the DMM so did not provide what I was looking for. It is just the power supply but as you say it shares the same power supply board. It would be interesting to see of the 30v version can be converted to the 60v with a firmware upgrade.

[@extraid]

@@JerryWalker001 I haven't seen a board from the 30 volt version, maybe there is a different transformer. Or is the difference only in the firmware? I bought it on Banggood, SPM eu version now has a good price with fast delivery from the Czech Republic p.s There is a video on KZbin on how to enter the secret menu and calibrate it.

[@MichaelEhling]

I might not be able to follow it all, but I'd be interested to see you do the in depth tests, perhaps a brief version of them with a bit of explanation for why you're doing each test.

[@lmamakos]

I'm curious if the multimeter is isolated from the power supply outputs? Maybe something to test in a follow-up video if you do one.

[@JerryWalker001]

Yes it is that is why I had both inputs connected. With ground disconnected it does not read anything and if the inputs are reversed then it reads -ve. Same applies to the current inputs. It does seem to be fairly well designed. I may post a follow up video once I have finished testing it.

[@8-bitbitsa821]

Are the grounds from the DMM and the PSU independent ? Isolated ?

[@JerryWalker001]

See comment below