Post by nescio on May 10, 2018 23:53:02 GMT -8
Hello folks,
I hope everybody is doing ok-ish, it has been a while since I posted anything anywhere.
But now I decided to finally go and build my own lab-psu (Power Supply Unit), to power various projects and for general testing purposes.
There are many designs out there and I can think of a couple of ways to do this myself, but I've been going about it all backwards. Using circuits/schematics from Internet tends to always leave me with the same problem => not having one or more of the essential parts listed, which always makes it end the same way, I'll spend way too much time trying to find equivalent components I might already have in my parts-bin, but the end result is almost always the same.....frustration, then disappointment and then.....procrastination.... :-(
What I would like to do is create a variable voltage and variable current powersupply, capable of delivering both AC currents and (rectified) DC currents.
I was thinking about using a set of already wound "donuts" or big toroidal cores that take 220V @ 50Hz from the AC-Mains (in NL),
the first puts out 2 x 9Vac, and the second one puts out 2 x 15Vac. (They seem to both be from the 90s from a Spanish company).
But then I found out I still have two PCB mountable transformers, vacuum-potted and of quite good quality, they are from a German company called "Hahn GMBH";
- The first one is a 'BV-UI-392-0008', it takes 1 x 220Vac @ 50Hz, and puts out two times 11,5Vac at the other end.
- The other one is a 'BV-UI-395-0022', again 1 x 220Vac @ 50Hz, putting out two times 18,5Vac at the other end.
Here is a picture of the products I mentioned. I chopped it up a bit to show only the two I actually own;
Is it a good idea to use these trafos instead of the 'bare' unpotted toroids?
And Can I or Should I use both of the other ones, the 392 and the 395? Or would that simply be a waste of one transformer?
Then a last question concerning frequency. I know that changing 50Hz AC into 16KHz AC is not very practical using transformers, the factor would be way to great, but I want to incorporate a HV DC out as well, by driving an FBT or something alike. Problem of course is that the frequency output of those trafos mentioned will be what goes into them, and cranking 50Hz up to 15,5 KHz is next to impossible without oscillation.
Can I or should I use crystals or something alike to accomplish this? I have many different crystals with varying output frequencies, and I also have an Arduino Uno and a PIC programming board in my inventory, could I perhaps use that one, or maybe just a bare Atmega328 in any way?
Although I know these questions are pretty much 'of the bat', I was hoping perhaps someone would have some advice for me.
Thanks in advance,
H.S
I hope everybody is doing ok-ish, it has been a while since I posted anything anywhere.
But now I decided to finally go and build my own lab-psu (Power Supply Unit), to power various projects and for general testing purposes.
There are many designs out there and I can think of a couple of ways to do this myself, but I've been going about it all backwards. Using circuits/schematics from Internet tends to always leave me with the same problem => not having one or more of the essential parts listed, which always makes it end the same way, I'll spend way too much time trying to find equivalent components I might already have in my parts-bin, but the end result is almost always the same.....frustration, then disappointment and then.....procrastination.... :-(
What I would like to do is create a variable voltage and variable current powersupply, capable of delivering both AC currents and (rectified) DC currents.
I was thinking about using a set of already wound "donuts" or big toroidal cores that take 220V @ 50Hz from the AC-Mains (in NL),
the first puts out 2 x 9Vac, and the second one puts out 2 x 15Vac. (They seem to both be from the 90s from a Spanish company).
But then I found out I still have two PCB mountable transformers, vacuum-potted and of quite good quality, they are from a German company called "Hahn GMBH";
- The first one is a 'BV-UI-392-0008', it takes 1 x 220Vac @ 50Hz, and puts out two times 11,5Vac at the other end.
- The other one is a 'BV-UI-395-0022', again 1 x 220Vac @ 50Hz, putting out two times 18,5Vac at the other end.
Here is a picture of the products I mentioned. I chopped it up a bit to show only the two I actually own;
Is it a good idea to use these trafos instead of the 'bare' unpotted toroids?
And Can I or Should I use both of the other ones, the 392 and the 395? Or would that simply be a waste of one transformer?
Then a last question concerning frequency. I know that changing 50Hz AC into 16KHz AC is not very practical using transformers, the factor would be way to great, but I want to incorporate a HV DC out as well, by driving an FBT or something alike. Problem of course is that the frequency output of those trafos mentioned will be what goes into them, and cranking 50Hz up to 15,5 KHz is next to impossible without oscillation.
Can I or should I use crystals or something alike to accomplish this? I have many different crystals with varying output frequencies, and I also have an Arduino Uno and a PIC programming board in my inventory, could I perhaps use that one, or maybe just a bare Atmega328 in any way?
Although I know these questions are pretty much 'of the bat', I was hoping perhaps someone would have some advice for me.
Thanks in advance,
H.S