#Digitech ips 33 gsp5 review full
#Digitech ips 33 gsp5 review series

#Digitech ips 33 gsp5 review series

(Even the power section is different using an IRFP150 as the series pass regulator on each channel) The GPD-3303S a totally different beast in all regards. BTW, I assume y'all know that GW-Instek also make a GPD-3303S with a readily available schematic. I'll check out the transformer sometime soon and, if my theory is correct, I'll probably build a totally new PSU inside the existing case. I've not yet tried powering it up with the transformer secondaries totally disconnected. LOL) My 'gut instinct' at the moment is that I've got a shorted turn (or two) on the mains transformer which will, unfortunately, turn the whole PSU into a paperweight. (I need to buy a few thousand extra fuses. I disconnected all the connections from the transformer to the power PCB leaving the transformer connected to the front panel 'control' PCB and it blew another fuse. I grabbed a handful of new fuses and it blew the first one immediately proving that there was, indeed a fault. A quick check showed that the mains fuse in the IEC socket (3.15A) was blown - rather violently too. I grabbed mine a GPS-3303 months ago and haven't even used it for anything serious. Hi guys'n'gals, If ANYONE here has the schematics for this puppy, I'd be most grateful. I am still trying to track down a solid schematic and/or service manual, if anyone has any leads! Best Regards, James Hopefully someone will find this of some use, even if just for the pictures. The supply actually maxes out around 32V/3.3A per channel.

#Digitech ips 33 gsp5 review full

A full adjustment procedure is attached to this post. There are a plethora of adjustments surrounding the front panel PCB, each labeled accordingly. This flying lead arrangement seems a bit lazy, but otherwise the internal construction is on par with the price point this supply hits (a good one, in my opinion). Channel 2, with the addition of a power NPN, presumably for the fixed +5V/3A output. Channel 1 arrangement with rectification, power amps, tap selection relays, etc. Unloaded: Shorted: Nice size multi-tap toroid: Airflow is directed into the heatsink, around the toroid, and out vents on the two sides, towards the front. However for my intended use, it's perfect for supplying regulators, split DC bus rails, etc: Start-up unloaded and short-circuited was satisfactory.

Unfortunately the lack of resolution on the display and lack of granularity on the single-turn control pots makes this supply unsuitable for powering low voltage cores and the like. a Voltage and current readings were spot on throughout both independent ranges, series and parallel. The power supply is a nice size (87V for comparison) smaller than it appeared online.

I'm not particular about these things, but being a used supply, it may simply need some attention. Also, no need to short the outputs to set your current control: disabling the output shows the current CC setpoint on each display (as seen below): The fan didn't kick on until I had the supply loaded full out for a few minutes, but it was noisy getting up to speed. Great to keep you from frying something by accidentally switching modes, or not re-arranging leads before hand. One really nice feature is when switching between series, parallel, and independent modes, the supply automatically switches the output off before switching. Outputs default to OFF when powering the supply on. There's a true hard disconnect switch in front, along with soft control of the supply outputs. Very bright, and I appreciate the difference in color between voltage and current. Full specifications are here: The layout is pretty standard, but I have to say the displays are great. This model is a triple output: 5V/3A fixed, and two independent/series/parallel 0-30V/0-3A channels. They're cheap, robust, and fall into a good position between programmable and non-current controlled supplies. Some variant of this design always seems to pop up anywhere I've worked. That said, these along with the MASTEC power supplies have been prolific throughout my career, even school. When I was researching, I couldn't find many first-hand impressions for this model in particular. Hi Folks - I picked this power supply up on eBay for a good price, and just wanted to put some pictures up in case someone else was considering buying one.