Thnx! 🙂
How much current through normal 35A rectifier before burn?
Maybe using one toroid for both channels.
Of course spec says 35A but in hot class A case..... u know... 🙂
How much current through normal 35A rectifier before burn?
Maybe using one toroid for both channels.
Of course spec says 35A but in hot class A case..... u know... 🙂
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Yes and no . But first let's back up. What is the voltage of each secondary ? And what voltage do you need for your amp.
Toroid is 500VA 2x27VAC.
Will build single PSU like this:
LCLC. 28mH-15mF-28mH-15mF
Need about 36VDC. Bias for each side about 1,2-1,5A.
So totalt current PSU will be 2,4-3A
Simulated ok in PSUD2, so only question is rectifier. 🙂
Will build single PSU like this:
LCLC. 28mH-15mF-28mH-15mF
Need about 36VDC. Bias for each side about 1,2-1,5A.
So totalt current PSU will be 2,4-3A
Simulated ok in PSUD2, so only question is rectifier. 🙂
Then just do the bridge I posted or parallel the secondaries and use one full wave rectifier.
But if you do parallel the secondaries make shure they are in phase otherwise it will be a dead short and may fry that nice transformer. Oh about the 35A bridge it will need a little heat sinking, but not much usually just bolting it to the metal chassis is all you need. Are you shure you need a LCLC filter ? I would think a LC filter would be good enough.
But if you do parallel the secondaries make shure they are in phase otherwise it will be a dead short and may fry that nice transformer. Oh about the 35A bridge it will need a little heat sinking, but not much usually just bolting it to the metal chassis is all you need. Are you shure you need a LCLC filter ? I would think a LC filter would be good enough.
My amp is not quite the same as DeLite, but similar.
Using IRFP240, and resistors instead of lightbulbs.
Issue is noise from PSU, will use amp on JBL 2446 and 2360... 🙂
Thnx woody, will use one single rectifier, just needed to be sure it wont burn! 🙂
Using IRFP240, and resistors instead of lightbulbs.
Issue is noise from PSU, will use amp on JBL 2446 and 2360... 🙂
Thnx woody, will use one single rectifier, just needed to be sure it wont burn! 🙂
You could probably get by with 25v for the input and 50v for the output but notice I said get by. All other things being = a higher voltage rating cap may sound better. But using a resistor and a 36v power supply you just aren't going to get much power. Have you thought about just building the ACA ?
Ok, will go high on cap voltage 🙂
Have had the ACA. It`s great fun 🙂
My amp now is only for fun and tweaking, and as is now have played on 4" Fostex in OB with 4xEminence for bass. Active xover of course, bigger amp for bass.
Now when trying to play on 110dBhorns, the PSU makes to much hum/noise.
So thats why all the PSU tweaking.
Of course I could turn back and go for ACA, or F5, but more fun to tweak and learn!
I know it dont have much power, but dont need it as i use it only for 600Hz and up
On drawing you see how it is today except for 10ohm resistor on drain, It is 16ohm.
Have had the ACA. It`s great fun 🙂
My amp now is only for fun and tweaking, and as is now have played on 4" Fostex in OB with 4xEminence for bass. Active xover of course, bigger amp for bass.
Now when trying to play on 110dBhorns, the PSU makes to much hum/noise.
So thats why all the PSU tweaking.
Of course I could turn back and go for ACA, or F5, but more fun to tweak and learn!
I know it dont have much power, but dont need it as i use it only for 600Hz and up
On drawing you see how it is today except for 10ohm resistor on drain, It is 16ohm.
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Load with light use 120 Volts bulbs version from original schematic.
What resistance is ?
Enjoy 🙂
deLite with Zen Regulator
hello,
i am interested to build de-lite with IXTH6N50D2 at 100vdc 2.2A
however at the articles mr.pass said there is an improvements offered by
power supply filter and regulator circuits as shown in Zen Variations #3
which will reduce noise and add more stability.
is this how we connect altogether? 🙄
and also for C1 and C2 how about if using 2x 47uf/250v like tube amp does,
will it deliver more speed and better performance?
Happy New Year all...
hello,
i am interested to build de-lite with IXTH6N50D2 at 100vdc 2.2A
however at the articles mr.pass said there is an improvements offered by
power supply filter and regulator circuits as shown in Zen Variations #3
which will reduce noise and add more stability.
is this how we connect altogether? 🙄
and also for C1 and C2 how about if using 2x 47uf/250v like tube amp does,
will it deliver more speed and better performance?
Happy New Year all...
Attachments
107 to 100 is way too small headroom .... maybe better to switch to cap multi , instead of hard reg.
also , unless you think to toss everything in bucket (biiiiiig one) of xformer oil (also nasty to your health) , you're damn too optimistic in intended dissipation figures
also , unless you think to toss everything in bucket (biiiiiig one) of xformer oil (also nasty to your health) , you're damn too optimistic in intended dissipation figures
as papa mentioned at the article,
the use of capacitor/inductor/capacitor "pi" filters
to smooth the ripple on the DC supply lines will take out most of the ripple,
but will not stabilize the value of the DC against fluctuations in AC line voltage.
For this you need an active regulator.
this device create more heats of course
but i think the design is cheap enough to try compared to oiled xformers
or fancy bulk capacitors bank ^.^
by the way...
there is a technique at the article, by which we can modulate
the regulated supply voltage with the output signal of the amplifier..
but i don't know how to implement and is it necessary for deLite amp? 😕
the use of capacitor/inductor/capacitor "pi" filters
to smooth the ripple on the DC supply lines will take out most of the ripple,
but will not stabilize the value of the DC against fluctuations in AC line voltage.
For this you need an active regulator.
this device create more heats of course
but i think the design is cheap enough to try compared to oiled xformers
or fancy bulk capacitors bank ^.^
by the way...
there is a technique at the article, by which we can modulate
the regulated supply voltage with the output signal of the amplifier..
but i don't know how to implement and is it necessary for deLite amp? 😕