50w Single-Ended BAF2015 Schade Enabled

[Soundhappy]

TF-3 are good candidate as input transformer.
For the moment I don't have Cinemag or Jensen to compare but all are high audio quality.

 

[Adams_Leo]

I have Tamura TF-3 input transformer in my hand.I will use this guy.

Plan to use BYV54V200 Fast recovery diode in the power supply.

 

[vdi_nenna]

My progress. Should have used PCB boards with traces. P2P is tedious. 🙄

 

[Zen Mod]

but you're closer to Zen ........

ever saw Papa's Ikebana Style?

🙂

 

[vdi_nenna]

ever saw Papa's Ikebana Style?

No, what's that? 🙂

 

[Zen Mod]

pics , his workbench on SR

 

[vdi_nenna]

Oh yeah, only difference is everything on his bench works. Well. 😀

 

[Soundhappy]

My progress. Should have used PCB boards with traces. P2P is tedious. 🙄

Haha P2P 😀
My was 3 small amp. sub circuits :
1 | CCS
2 | Audio path
3 | Bias voltage
transformer was soldered directly to RCA input

Sometimes is good time on the bench.
Printed schematic on the paper then connection I finished is marked OK before the next one step.
I can visualise more easyly all P2P connections who is ready done 🙂 Have Fun

 

[Soundhappy]

For example

 

[vdi_nenna]

Well, that's just down right artistic. 🙂

 

[Soundhappy]

Well, that's just down right artistic. 🙂

😀 Thanks Vince!
Btw I do stereo P2P Korg preamp on one perfboard and was very complicated with 8 small jfet's etc.
I show this leater in the adequate thread

 

[dantwomey]

Even though it's late in the thread Zen Mod suggested I stick my nose in over here. After a brief review I'm intrigued. I believe I might have enough heatsinks for a good start. Hmmmmmm................... 😉

I would definitely go all out with a 1kW three phase 600v version! Then I would sell the fireplace in my basement.

Regards,
Dan

 

[Zen Mod]

that's The Spirit!

🙂

 

[dantwomey]

And we're off............

VBE60-06A IXYS | Discrete Semiconductor Products | DigiKey

2pcs NEW KENDEIL K01 22000UF 75V CAP AUDIO QUAD303 QUAD 405 UPGRADE NAIM!63V rep | eBay

 

[Zen Mod]

you didn't found those , type from schmtc - IXFN140N20P ?

https://www.digikey.ca/products/en?keywords=IXFN140N20P

 

[dantwomey]

you didn't found those , type from schmtc - IXFN140N20P ?

https://www.digikey.ca/products/en?keywords=IXFN140N20P

Nope, just thinking of a robust power supply. I may be able to get away with a single main power supply. I'll have to check but I think I have four very large heatsinks that will allow me to put both channels into a single enclosure. Time will tell...............

Regards,
Dan

 

[Zen Mod]

silly ZM , I didn't realize it's bridge ...... same case as mosfet puck ....

 

[dantwomey]

To start,

1500VA 38-40V Transformers | Plitron Manufacturing

Some heavy duty bridge rectifiers
VBE60-06A IXYS | Discrete Semiconductor Products | DigiKey

Lots of capacitance
2pcs NEW KENDEIL K01 22000UF 75V CAP AUDIO QUAD303 QUAD 405 UPGRADE NAIM!63V rep | eBay

I think I have four previously enjoyed 159ZL's lying around,
D.C. Reactors or filter chokes (153-159 Series) - Hammond Mfg.

The makings of a good power supply that'll dim the lights in my neighborhood?

Regards,
Dan 🙂

 

[enochRoot]

How is the 10000uF output cap value calculated? Is it the output impedance in parallel w/ the 220R resistor as an RC circuit? If so, that would give a rolloff (-3db) around 14hz on the CCS tap and 24hz on the middle tap, correct? But this measures flat out to 10hz. I guess I'm missing something. Just want to know where it comes from.

*Edit, I guess it would be 220R + 22R in series and then parallel w/ the output impedance. Doesn't affect the numbers though.

 

[Zen Mod]

10mF impedance is in series with load

so , say, 8R is what you need to take in account