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Since this shouldn't have been an issue from the software, I've contacted the guy I bought the laptop from to see if he can help. It was a struggle to make the Excel program do what you showed in the

V2.22 VER 76, it is under the Program files (x86) folder

PSUD was updated in 2019 to move storage of the rectifiers to the AppData area instead of the Program Files area. This was mandated by security changes on Windows 10 which prevented writing data to

This is a system issue. The folder is located on the system disc that needs admin rights to write data. You can either run the program as an administrator (right-click on the icon and choose this

What operating system / version / build are you using? It's in Help | About box Regards, Duncan [email protected]> wrote: -- Duncan Munro www.duncanamps.com

I followed your tutorial on YouTube on getting the proper specs (Vlaw,Vfac,Dres) to add a rectifier. I modified one of the files with my info, and when I went to save it, it told me I didn't have

This of this as "lead resistance". Actually in electrolytics it is more like "paste resistance", the semi-damp electrolyte between the electrodes. In foil caps, foil resistance too. If this series

Forgot I can measure ESR, the ESR readings are at 120, 1K, and 10KHz, should use the lowest resistance?

This is for series resistance. All capacitors have this, and it contributes to reducing the current that can flow in and out of a capacitor and therefore its effectiveness. It's a necessity to make

Thanks! I'll check that out. One more question, the capacitors have a resistance field. The start up schematic has 2 ohms here. Shouldn't this be in the megaohms for a cap? I don't understand where

There's some resources which should help with this. You will need a data sheet (that's a must) but once you have this, the process is quite simple; there's a YouTube video which describes the process

Any possibility of having you add a GBL06 and GBU806 rectifiers to the list? I really don't understand how to find the "vlaw / vfac / and dres" fields.

ps: Don't forget the primary resistance as this forms part of the source impedance. Regards, Duncan

Hi, you just measure one half. As you say, they are likely to be different; I would recommend measuring across both (red to red) and dividing by 2 for our purposes (both volts off-load and

( *red-ct-red* )? For full wave rectifier, do we enter the measured full ( *red-red* ) Secondary winding's DC resistance into the Secondary winding resistance field of the Calculator?? Or, do we

Regarding the offline transformer voltage to use. When I have the actual transformer, I measure the actual secondary open circuit voltage. With the transformer already in the circuit, which I think is

Hi Jonah, The thump is to be expected - the CLC filter is a resonant item. Solid state rectifiers apply power straight away and the sudden increase in voltage to the system causes the CLC filter to

Hi Duncan, Thank you so much for your thoughtful response. I thought I was going crazy, glad to know it wasn't just me. I wonder what that thump is all about? That said, the programs is wonderful

Thanks for letting me know about the other channel, it was in Japanese, but I should have done the decent thing and waved Google Translate over it, apologies. I've keyed your schematic into PSUD2 and

Thanks for the clarification regarding off-load voltage and rated voltage. About the current draw... the schematic is for a stereo amp so I estimated around 96mA for two 6V6 and two EF86. The arrow