Feature request

#96

I've been using this brilliant piece of software for years but I think there's a missing function that could be useful to many diyers. I'm referring to hybrid bridges. Now I'm working at a little 2A3 amplifier and the idea is to use two silicon carbide diodes to ground and a 5Z3 on the positive leg. This solution has several practical advantages and works great. Would it be possible to add it? Many thanks.

Re: Transformer primary voltage entry won't stay put on Mac version

#95
Edited

Hi Duncan,

It's the primary voltage of the transformer that flips back to a default of 240 immediately after entering my value of 120. Maybe this doesn't affect the outcome but I seem to remember the windows version giving values a few volts different at the final three filter sections.

Ian Eales ran the numbers for me and emailed the results to me so I'm good to go now.

Thanks!
Allen

Re: Transformer primary voltage entry won't stay put on Mac version

#94

Hi Allen,

When you say the Mac version isn't behaving or holding certain values, what is the issue and what are the values? I ask because the simulator has 100% identical code between Windows/Mac versions and it should not forget any values within a design.

If it's the user interface issue you reported earlier with the off load voltage calculator having a set of default values every time you go in (known issue from Mac UI), this should only affect things when you go in to select a new transformer - that's not something you would change repeatedly. And if you did, simple logic tells me that you would have to key in fresh values for the transformer anyway?

Regards,
Duncan

Re: Transformer primary voltage entry won't stay put on Mac version

#93

开云体育

Hey Allen,

It might be overdoing but you could always install Oracle’s “Virtual Box” software, download Windows (I think Windows will run for 30 days before asking for a reg key), load Windows on VirtualBox and then install the Windows’ version of PSUD2.

How much time on your hands do you have? ?

-Bob

Show quoted text

On Oct 10, 2021, at 9:35 AM, Allen <alwbartee@...> wrote:

?Hi Dom,

I'm good with that. My problem is I'm stuck with only my MacBook Pro here in the hospital and the Mac version of PSUD2 is not behaving and won't hold certain values for simulation so I don't think my values are accurate enough to start experimentation. Was hoping someone might run the numbers for the resistor values before I ?order a boat load of resistors for the trial runs.

Thanks, Allen

Re: Transformer primary voltage entry won't stay put on Mac version

#92

Hi Dom,

I'm good with that. My problem is I'm stuck with only my MacBook Pro here in the hospital and the Mac version of PSUD2 is not behaving and won't hold certain values for simulation so I don't think my values are accurate enough to start experimentation. Was hoping someone might run the numbers for the resistor values before I ?order a boat load of resistors for the trial runs.

Thanks, Allen

Re: Transformer primary voltage entry won't stay put on Mac version

#91

For transfos simulation, for resistance value in simulation, see attachement
73s
Dom

psu transfo.jpg

Re: Transformer primary voltage entry won't stay put on Mac version

#90
Edited

I think I botched writing up the B+ voltages as relating to B1 through B3.?

For clarity, 3rd from last filter section is 280V, 2nd from last is 265V, last section is 245V.

Allen

Re: Transformer primary voltage entry won't stay put on Mac version

#89

I've got a couple of weeks left in the hospital and was hoping someone could run the PS simulation so I can put in an order for various resistors to start experimenting with as soon as I get out.

The parameters I have are:

Transformer current rating for high voltage section is 60 mA.
B+ load is 13.2 mA
Primary voltage 120
Primary measured winding dc resistance = 10 ohms
Secondary nominal voltage (one side) from manufacturer = 300 volts?
Secondary measured off-load voltage = 340 volts
Secondary measured winding dc resistance (one side) = 200 ohms
Rectifier = 6CA4
RC filter sections = 5
C1, C2, C3, C4, C5 each = 47 uf
Needed B+ voltage values at final 3 filter sections: B1 245, B2 265, B3 280
Current draw for each current tap = 4.4 ma

Let me know if there are any parameters I failed to include to run the numbers. ?FYI, resistor value for R4 for B2 that seemed to work out in my previous attempts was 2k. Resistor value for R5 for B3 that worked was 5.1K.

Thanks for the help!
Allen

Re: Transformer primary voltage entry won't stay put on Mac version

#88

transformer current capability for high voltage section is 60 mA.
Load is 13.2 mA
I am not aware of anyone else working on this.

I'm glad I had to go through the specs again as I was in error in the original post on a couple of values. Secondary nominal voltage (one side) from manufacturer = 300 volts, not 330 as I had posted in the original post.

Transformer current capability for high voltage section is 60 mA.
Load is 13.2 mA
Primary voltage 120, primary measured winding dc resistance = 10 ohms
Secondary nominal voltage (one side) from manufacturer = 300 volts (not 330 volts)
Secondary measured off-load voltage = 340 volts
Secondary measured winding dc resistance (one side) = 200 ohms, (not 100 ohms)

Sorry for the values with wrong numbers I posted. All should be good now.
Thanks
Allen

Re: Transformer primary voltage entry won't stay put on Mac version

#87

开云体育

What's the transform current capability and load?

If you have someone already doing this, please let the group know...

- Ian

On 9/21/2021 18:40, Allen wrote:

Show quoted text

I'm going through medical treatments for the next 30 days at a hospital and only have my Mac laptop with me to run PSUD2. Looking for help from anyone who can run my PS design on their PC so I can have an idea for a range of dropping resistor values I'll need to purchase for experimentation and dialing things in to reach my B+ voltages.
I've attached my .psu file for Mac which will have most of the values set but you will need to enter a few of the values for the transformer which I'll list here:

Primary voltage 120, primary measured winding dc resistance = 10 ohms
Secondary nominal voltage (one side) from manufacturer = 330 volts
Secondary measured off-load voltage = 340 volts
Secondary measured winding dc resistance (one side) = 100 ohms

Desired B+ voltage values at current taps: B1 245, B2 265, B3 280?
Resistor values entered at R1, R2 and R3 (2.8K) gave me correct B+ voltages for all three B+ when running the simulator on my PC but are way off when running through the Mac version.

Thanks everyone,
Allen

Re: Transformer primary voltage entry won't stay put on Mac version

#86

I'm going through medical treatments for the next 30 days at a hospital and only have my Mac laptop with me to run PSUD2. Looking for help from anyone who can run my PS design on their PC so I can have an idea for a range of dropping resistor values I'll need to purchase for experimentation and dialing things in to reach my B+ voltages.
I've attached my .psu file for Mac which will have most of the values set but you will need to enter a few of the values for the transformer which I'll list here:

Primary voltage 120, primary measured winding dc resistance = 10 ohms
Secondary nominal voltage (one side) from manufacturer = 330 volts
Secondary measured off-load voltage = 340 volts
Secondary measured winding dc resistance (one side) = 100 ohms

Desired B+ voltage values at current taps: B1 245, B2 265, B3 280?
Resistor values entered at R1, R2 and R3 (2.8K) gave me correct B+ voltages for all three B+ when running the simulator on my PC but are way off when running through the Mac version.

Thanks everyone,
Allen

Marantz 7C.psu

Re: Multi-Screen Bug

#85

开云体育

Hi Duncan,

Works! Thanks!

In payment, here's beta and help icon files

- Ian

On 9/15/2021 14:33, Duncan Munro wrote:

Show quoted text

OK thanks. I'm busy with PSUD3 right now and it would not be sensible to do even very minor changes to PSUD2, simply because of the significant amount of time to run through regression testing across multiple systems.

However... I have put a beta build 78 for Windows executable in the files area ->?/g/duncanampspsud/files/beta_test_files

You will need to copy to your program folder and run from there, it's not packaged, and doesn't have an installer. On startup for the first time it will take up 3/4 of the screen (not desktop) and if you resize it will save the settings on exit. When you start up again, it will restore the screen settings from the last session.

Regards,
Duncan

Re: Transformer primary voltage entry won't stay put on Mac version

#84

Duncan,

Thanks for looking into the issue with the primary voltage flipping with the Mac. I'll use my PCs for now so not a problem. The menu bar hiding out is not a problem for me as all I have to do is drag the cursor up to the top and it's accessible.

Looking forward to the new version you're currently busy with.

Allen

Messages / Emails from the PSUD group

#83

Hi,

Message posts on this group are infrequent, however when we do have some messages going out there are a flurry of unsubscribes.

Emails are not always welcome, and these groups default to sending an email for every message that comes in. If that is tiresome, or unwelcome you can reduce it or switch off altogether and still stay a member of the group to read the messages when you wish.

Your subscription can be managed at:?/g/duncanampspsud/editsub

The choices are fairly self-explanatory.

The default is "Individual Messages" which will generate an email to you for each message and each reply - this is too much for some people, I know.
You can select one of the digest options which packages up a dozen messages and puts them in one email, or a daily digest that gives the whole narrative for the previous day in one email.
There's "Special Notices Only" which will only ever be used if there is an upgrade to a new production release of the software.
And finally, "No Email" which switches all the email notifications off. You can still log into the group and see the messages, and also post messages

Hopefully that information is useful and will allow you to get the right balance of updates from the group.

Regards,
Duncan

Re: Multi-Screen Bug

#82

OK thanks. I'm busy with PSUD3 right now and it would not be sensible to do even very minor changes to PSUD2, simply because of the significant amount of time to run through regression testing across multiple systems.

However... I have put a beta build 78 for Windows executable in the files area ->?/g/duncanampspsud/files/beta_test_files

You will need to copy to your program folder and run from there, it's not packaged, and doesn't have an installer. On startup for the first time it will take up 3/4 of the screen (not desktop) and if you resize it will save the settings on exit. When you start up again, it will restore the screen settings from the last session.

Regards,
Duncan

Re: Multi-Screen Bug

#81

开云体育

Hi Duncan,

Windows 10 Pro
Version??? 10.0.19043 Build 19043

I always check that I'm using the latest release before bitching...? and I keep two rollback versions so I can test things that crop up... as a retired programmer, it's professional courtesy...

Cheers,

- Ian

On 9/15/2021 13:07, Duncan Munro wrote:

Show quoted text

Hi Ian,

What operating system are you using ? (This is always useful info to put in a post along with the version of PSUD from Help|About)

Regards,
Duncan

Re: Multi-Screen Bug

#80

Hi Ian,

What operating system are you using ? (This is always useful info to put in a post along with the version of PSUD from Help|About)

Regards,
Duncan

Multi-Screen Bug

#79

Hello,

I do wish the application either always started on the primary screen or on the last close screen.

It's most annoying to have it open in the middle of the desktop surface with multiple monitors, i.e. split between monitor 0 and monitor 1. It's probably ok for 1 or 3 monitors, but not 2 or 4

- Ian

Re: Transformer primary voltage entry won't stay put on Mac version

#78

[Allen]? The version I'm using is PSUD2 version 2.20 build 74. My mac OS version is Catalina version 10.15.7 from mid 2012

Hi Allen,

That's where I'm going to have an issue with debugging. I bought a Macbook Pro in Dec '19 to do some dev work for PSUD on, however it uses the very latest Big Sur operating system. Unfortunately, I don't have any other Mac hardware, and I certainly don't have any setup or OS going back as far as 2012. All I can do is check the software against my current system and try and reproduce any issues on that.

The? issue with the menu options moving about is one example of what I cannot check as the latest OS puts the menu for the active window right at the top of the screen, so I cannot really help with that one.

The other issue with the 120V being wiped each time, I can reproduce this on the Mac (it doesn't do it on the PC). This is something I can reproduce so will have a look at that this evening.

Regards,
Duncan

Regards,
Duncan

Re: Transformer primary voltage entry won't stay put on Mac version

#77

[Paul]Windows PSUD2, I do not see a transformer?primary?voltage. Only secondary

Hi Paul,

There's a couple of built in calculators that allow you to work out the source voltage and impedance, one does rely on primary voltage but it's hidden away.

If you Edit the transformer, there are a couple of buttons with [...] written on them, the top one allows you to calculate the two parameters using a transformer offload voltage and regulation%. The lower one allows you to calculate the two parameters using line voltage, resistance etc. and it does rely on primary voltage to do the math.

It's the lower on that Allen is referring to, that's the one that is having behavioural problems on his Mac.

Regards,
Duncan