[Kramusha]

Look at this. The first one is the midpoint rectifier, the second one the bridge rectifier. You have to connect the two inputs of the rectifier, connect this bridge with ground and connect the Power transformer leads witz the diodes.

Stefan

[Grimlock]

so the first one's if I buy one from tubetown and the second if I buy one from TAD?

[Kramusha]

No, the first is TAD/normal Soldano and the second way is the tubetown. Jo's layouts are for the first way (midpoint).

Stefan

PS: omg mein Englisch ist nicht mal mehr holprig, das ist eine Wanderung zum Mount Everest 

[Grimlock]

PS: omg mein Englisch ist nicht mal mehr holprig, das ist eine Wanderung zum Mount Everest 

it's good enough for me to understand

any difference in quality between the tubetown version and the TAD-version?

[Kramusha]

No, I use the tubetown/Müller Rondo transformer in this amp: http://www.tube-town.de/ttforum/index.php?topic=4873.0

No problems, 520V Ub. The transformer is great But I don't know the TAD transformer.. :/

Stefan

[Joachim]

Hi Dimitri!

any difference in quality between the tubetown version and the TAD-version?

No, not really a difference in quality. The main difference is the technical design and the winding scheme of the high voltage coil. Finally it is a matter of taste if you prefer a conventional or a toroidal transformer.

Cheers,
Joachim

[Grimlock]

I've looked at the power-scheme...is this the full bridge rectifier? If uploaded it so you know what I mean. If that is in fact the case...I don't realy know how to change it cause that rectifier bridge is on the pcb...unless...does a midpoint rectifier exist as an electronic component? if so, it's not that hard to adjust...

you just bring the midpoint directly to the ground instead of connecting the rectifier bridge to the ground...seems logic

[Grimlock]

isn't this a midpoint rectifier?

[Kramusha]

Exactly I think you can see, what you have to change on the PCB. It should be no problem

Stefan

[Joachim]

... some background knowledge:

http://en.wikipedia.org/wiki/Rectifier#Full-wave_rectification

[Grimlock]

Thx joachim, though that was nothing new it's relatively easy compared to the crap you can do when you put thyristors instead of diodes...

but I can't seem to find a component that has the function of a midpoint rectifier. unless I start messing around with diodes and create one myself but I think the result won't be as pretty as is should. It would turn out a mess I presume.

I think the TAD-trafo would be the safest choise...I would buy it from tubetown but...I feel like I'm going to make it harder on myself...with an even higher risk of fxxxing it up ^^ wich is by now allready very likely

[Joachim]

Hi Dimitri,

but I can't seem to find a component that has the function of a midpoint rectifier. unless I start messing around with diodes and create one myself but I think the result won't be as pretty as is should. It would turn out a mess I presume.

The full wave rectifier with a center tap (midpoint rectifier is very uncommon term) has to be build discretely with separate diodes (1N5408 or UF5408 in a SLO). You will find no integrated parts with the complete rectifier. Only bridge rectifiers are available as discrete devices.

Do you are using PCBs? In this case the diodes are located on the Power Supply PCB and no further wiring is nescessary. Only the bridge rectifier requires additional wiring as this option is not provided on the PCB.

Joachim

[Kramusha]

Hmm.. Wer hat noch schnell gesagt, dass normale Trafos schöner sind als Ringkerntrafos?

http://www.dobernigamps.de/temp/CIMG1208_2.JPG <-- SLO Trafo von TAD.

Uaghs!

[Dr. Nöres]

Scheint, das keine Trafohauben beim TAD dabei sind. Sollte man eigentlich bei dem Preis erwarten können.
Allerdings wenn man passende HAuben dafür schön schwarz lackiert und montiert, sieht der imho doch bestimmt ganz gut aus. Ist natürlich Geschmackssache. Der Ringkern sieht meineserachtens eher nach großem Bonbon aus, was noch in der Plastikfolie auf den Verzehr wartet. Sorry.

[Kramusha]

Pfüü..