Season greetings

[Zen Mod]

 

[cviller]

Project for christmas toroids

Merry christmas all!

Look what I got from my brother (see attachment).

He got four of these from work and gave them to me as a christmas present.

Could I bould an Aleph something with these?
The secondary windings are:
10x17V / 1.5A
1x18V / 2A

And I have four of these.

 

[steenoe]

Thats a nice Christmas present.

Could I bould an Aleph something with these?

If you can parallel the 10 secondaries into 2 sets of 5x17V each, you end up with 2x17V 7,5A. This is suitable for an Aleph 3 or a Babbelfish. Missing a single volt wont hurt too much The Babbelfish comes highly recommended
It will probably be a bit fiddly to parallel so many secondaries.

Steen

 

[cviller]

Sounds like a good plan!

Then I can take one and stack the voltages to be used in a preamp....

And I'll still have one left to play around with!

 

[Zen Mod]

Thats a nice Christmas present.

If you can parallel the 10 secondaries into 2 sets of 5x17V each, you end up with 2x17V 7,5A. This is suitable for an Aleph 3 or a Babbelfish. Missing a single volt wont hurt too much The Babbelfish comes highly recommended
It will probably be a bit fiddly to parallel so many secondaries.

Steen

DDD again off topic,nasty boyz.......


what if someone is smart enough to put Graetz bridge on each secondary,and then make paralleling thingie..........hehe

losing additional volt or something is good trade

 

[Zen Mod]

DDD again off topic,nasty boyz.......

to quote my self

even better solution,but only after thoroughly checking plain paralleling solution........where paralleled secs must be matched in 10mV bracket

EDIT...... :
all Graetzs 5A plastic cheap thingies ,not 3A ,as I wrote on funny pic

EDITEDIT :
cviller-you owe me for this briliant engineering 3 of your 4 donuts

 

[carpenter]

I wanted to do just that with my trannies multiple outputs, but I wondered if the rectified output had to be filtered first.

 

[Zen Mod]

I wanted to do just that with my trannies multiple outputs, but I wondered if the rectified output had to be filtered first.

why?
just filter them all at once

 

[cviller]

Thanks for the artwork!!

Why not just connect them before rectifying?

 

[Zen Mod]

Thanks for the artwork!!

Why not just connect them before rectifying?

yes,agree that will be best solution,but under condition:

(post #26)

.....................where paralleled secs must be matched in 10mV bracket

 

[Babowana]

Most customers want total silence from the amplifier, including
mechanical noise. If there is not complete matching between the
secondary coils and only 1 rectifier bridge, any net DC imbalance
between the current of the + supply and the - will tend to
saturate the core of the transformer and create noise. This is
seen for quite low current differences and can also show up with
low frequency output. Using two bridges eliminates the problem.

In the eyes of a manufacturer, any other subtle differences
pale in comparison to the cost of having to replace a transformer
in the field due to mechanical noise.

Copy from the place far away
Hope this will explain why the bridge rec to each secondary

 

[carpenter]

Yes, my concern exactly. I wasn't certain how clean the dc had to be before it could be combined.

 

[Zen Mod]

Yes, my concern exactly. I wasn't certain how clean the dc had to be before it could be combined.

O tempora O mores!

just do like wroted...........

bridges are there for AC decoupling ,not for inventing new ruuuuuuuuuules

 

[macka]

Happy New Year everyone.

I heard in indirectly there were unusual celebrations in Northern Califorina

I wonder if EL PIPO got a work out.

Macka

 

[flg]

Happy New Year to all

 

[carpenter]

and many more wonderful diy projects