duncanamps.com

ghramsey · Joined: 20 May 2003 Posts: 25 Location: Houston, Texas

I would like to suggest that pressing Enter after entering information in the dialog box for caps and resistors will be the same a clicking the ok box.

As it stands now the ESC key closes and cancels, the TAB key works to change the entry field but the ENTER key should close and OK the information and it does not instead there is an annoying beep Exclamation

and one must click OK to get out of it.

Please change this 'annoyance' in the next build. Smile

Thank you

duncanamps · Posted: Wed Jul 16, 2003 6:57 pm Post subject: Re: Suggestion for PSUDII

ghramsey · Joined: 20 May 2003 Posts: 25 Location: Houston, Texas

kisu · Joined: 13 Aug 2003 Posts: 2

Hello!

I just downloaded and installed PSUDII, I found it very useful, but I need another kind of rectifier bridge for my schematic: half tube half SS, a so called hybrid Graetz bridge.

Is there a posibillity to add this kind of rectifying?

Examples:

http://homepages.ihug.co.nz/~rwillis/alex/bridge_rectifier.html
http://www.audiodesignguide.com/my/se.html

Very Happy

duncanamps · Posted: Wed Aug 13, 2003 2:27 pm Post subject: Re: hybrid bridge

ghramsey · Joined: 20 May 2003 Posts: 25 Location: Houston, Texas

jlester · Joined: 25 Mar 2004 Posts: 2

How can i capture the graphics of PSU2 and save it to jpeg file?

duncanamps · Posted: Sat Apr 10, 2004 6:09 pm Post subject:

opcom · Joined: 24 Jun 2003 Posts: 17

I love PSUD, it is quite accurate, but it looks like my power supply may need a bit more flexibility in PSUD due to an unorthodox circuit.

Here are a couple of things it has, which are not in the PSUD. #1 is the biggest factor and very real, #2 is a nicety.

1. a variac before the high voltage transformer. It would be nice to be able to enter the variac data (for whatever voltage you have it set to, and whatever resistances you measure on it at that point). This is tantamount to having a tapped autotransformer between the mains and the plate transformer. I have found that I have some regulation issues when I get into the 2KW DC range, and I feel that it is the variac causing them. I would like to model this.

The reason I need to keep the the variac is that I cannot run the plate transformer at 5KV output, as it is too high, and I also need to be able to adjust the power supply DC output from about 2000 to 3500VDC in order to fine tune the transmitter for maximum efficiency while remaining below the legal limit for output.

2. 'hash' filters in the plate lines of the mercury vapor rectifiers, between the plate transformer and the anode of the recitifier. These are low value RF chokes, usually ranging from 5uH to 1mH, with negligible resistance. These eliminate HF and RF transients as the rectifiers noisily switch. One look at the V(D1) parameter and the noise is visible in the simulation. Or is it caused by something else in the simulation?

This project is at:
http://208.190.133.201/tuckerkw/tucker_transmitter.html
if anyone would care to have a look at the beastie.

The psu file is at:
http://208.190.133.201/3kv.psu
if anyone would like to see it.

I will be going to a full wave bridge, and the schematic I have posted are not quite right yet, but the hash issue will remain.

Any suggestions are welcome,

Thanks,
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Is it above 2000 volts?

opcom · Joined: 24 Jun 2003 Posts: 17

For a series of simulations where, for instance, everything but the load changes, or everything but one component is the same, it would be great to be able to export the output data to a comma-separated list.

An example, I wished to plot the output voltage of a given power supply simulation over a wide variety of load currents, in order to determine where the critical current point was for the swinging choke.

It was simple to run several simulations, and narrow in on the range around the criticla values, but there is no way to get the data points out, and dump them to excel, allowing multiple datasets on the same chart.

Hmm. That, I would be willing to pay for.. !!
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Is it above 2000 volts?

opcom · Joined: 24 Jun 2003 Posts: 17

Would it be possible to have either the graph display resizable, or the text data pane be larger to show all the result, min, max, mean, rms values without having to scroll them across? This would allow one with a larger CRT to view all the data, text and graph, at once. It would sure be convenient.

Thanks,
Patrick
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Is it above 2000 volts?