Absolutely no need to be intimidated by the numbers when calculating power supplies Paulca.
Take your winding voltage ,multiply it by 1.4 ,now from this you have to subtract the losses across the diodes in the bridge ,then you'll still have to allow at least a few volts extra so that whatever regulator you have can function effectively without dropouts .
Google Duncans PSUd 2.
Best o luck.
Choices, choices.....
I do feel that going from any wave to CMOS should avoid going over 3.3 (5) or below 0, unless you specifically set that.
But I also feel that having set Vpp and offset, and then walking from Sine to Triangle or so, should not loose your values because you happened to walk past CMOS
To be honest, I think apart from your idea to set an optional per channel DUT voltage safety window, when walking through the waveforms they should not immediately apply, but only after you confirm. So you can go from one wave to the other, without generating all the waveforms in-between. This is unlike walking through frequencies, which of course should immediately apply.
In fact, in the hope that FeelTech would pick it up, a good while back I already mentioned that pressing the Wave button is auto-advancing, which is wrong anyway:
Right now, if I am on Square, and I want to go to Sine (one to the left), I always first have to go to CMOS (one to the right) and then go 2 back. Just plain silly.
Tiny update from my sideBetter each time
May I suggest these modifications?
W16: DC_AMPL_CH2_OFFSET
W3: DC_AMPL_CH2_GAIN
W26: DC_AMPL_CH1_OFFSET
W5: DC_AMPL_CH1_GAIN
Yes indeed. You can imagine the following:
- 1 push on wave button: highlight wave selection (selection mode)
- another push on wave button: cancel selection mode
When in selection mode:
Turn rotary knob to go through waves without modifying the current one (wave plot having another colour to show selection mode active)
Confirm your choice by pushing the rotary knob..
I don't order from Mouser, but RS Components or for a sizable order Farnell. RS have free shipping and no handling charge for any size of order including a single 0.1p resistor technically. Though you would feel like a bit of a dick doing that to them.
Trying to find a good economically priced small transformer with two suitable secondaries small enough to go in the FY6600's case is like trying to find a needle in a haystack with eBay's useless search engine, but I located this one - it's a low-profile R-core transformer of 30VA rating, the two 9V secondary windings can be connected in parallel IF you are careful of course to give 9V @ 1.4A. Best of all, it has an inter-winding screen as well!
As you've got an adjustable 12 - 15v supply, and as you can't guarantee that the 5v module will actually deliver 5v, why not allow yourself some leeway and get the LM317 version for a few pence extra, then you can dial in whatever exact voltage you want? (I set mine to 5.1v to give a little extra headroom for the regulators on the main board to play with). I didn't use the 5k pot that comes with it, but mounted a multiturn trimpot on a piece of veroboard and put that in its place. I also left off the switch, and the big spring connectors (I used a screw connector block instead).
I tried out Fremens tweeked software earlier ,thats really handy that it runs seamlessly with the original , even the small changes to the look of it so far is a big improvement over the original ,the white text on black/grey backround looks great ,and the bigger waveform window helps too .
The links I've provided refer to kit items, to facilitate substitution of higher quality electrolytic capacitors in the designs, etc. I believe the maximum current ratings of these kits are suitable for adequately powering the FY6600's electronics, but please feel free to correct me if I'm wrong!
Colleagues, I do not see the point of changing the switching power supply in the generator. After it there are linear stabilizers. The only thing that makes sense is the ferrite rings on the cable that connects the power supply to the main board and place the power supply inside the metal screen. All the rest does not make sense.