power supply issues
 

here's the deal:

i have an ecl86 amp

It has regulated supply for the triode section

The pentode section has not

the power supply is now:

tube rect, c, r, c, where it splits to r,c for the pentode section and goest to the regulator for the triode section.

I have a bunch of 1,6 H 124 ohm chokes.

where would they benefit the ps?

can i change the last r of the pentode section with a choke? I know the first one could...

any thoughts

(the values are 240V~, ez81, 100uF,220 Ohm, 100Uf, 100Ohm, 2x47uF parallel)

Change the 220R with choke.

cheers.

the 100r resistors not?

i simulated and i get enough voltage

the question is, can chokes be so near to the final supply?

Bas

You can try on the place of the 100R, only if they are big enoug (I dc current )

Take a look here :

http://www.dhtrob.com/projecten/voeding_9_chokes.htm

;)

Don't know the dc current, they are from www.baco-army-goods.nl

what goes wrong if they arent big enough?

they are so cheap (E0,70) smoking them wouldn't make me cry ;)

beamnet,

If you have the room, use 4 of those chokes. Wire them in series/parallel to yield a net inductance/resistance = to that of a single choke, with 2X the current handling capability.

It's not a problem to have the choke(s) close to the power trafo, IF you orient the lamination stacks perpendicular to each other.

ok, i have tons of room. I might be able to fit in about 20! But then i could have better bought a descent choke. The thing works fine without, just want to see if E2,80 can really boost the performance.



Is there a way to check power handling? i guess max power is when the core saturates?

that must be measurable with a signal generator and a scope i suspect?


thanks a bunch for thinking with me!