Scryer ... or how F8 met Mighty SissySIT

[Zen Mod]

I believe it's the same as ones you got in second set

so yes

reminder (written on schmtc) - you don't need isolators for Scryer pair of BD - collectors are connected electrically...... so just blob of goop

 

[Plott]

Cool, thanks

 

[Plott]

Some soldering done

 

[peppennino]

Beauuuuuuuutifu!

 

[Zen Mod]

Fugly!

 

[Plott]

Thank you both

 

[Plott]

Some work done, this amp (and every further +/-24v rail 25w amp) will get this external dual PSU

 

[Zen Mod]

external PSU is for Weaklingsessssss

Real Men are building numerous heavy amps and laying them up all on shelves, to enjoy in visual bliss

 

[Plott]

external PSU is for Weaklingsessssss

Real Men are building numerous heavy amps and laying them up all on shelves, to enjoy in visual bliss

Greenhorns are Weaklingsessssss so i stand by it
Nevertheless, I will build numerous amps and weigh down my shelves... and nobody will know they are without PSU

 

[Plott]

Weaklingsessssss progress

 

[Zen Mod]

 

[von Ah]

Tasty!

 

[Vunce]

Nice Plott!
But….where’s the active bridge rectification for class A??

 

[Plott]

Nice Plott!
But….where’s the active bridge rectification for class A??

After reading through the somewhat controversial discussion, I'm sticking with the full bridge

 

[bergy]

I think I know where transformers will be placed

But where those purple pcb are coming from?

 

[Plott]

I think I know where transformers will be placed

But where those purple pcb are coming from?

They are from another project, the Aleph 60. But Mighty ZM has his own PSU pcb, in blue.

 

[Plott]

Mightiness,
now I'm planning the chassis for this amp and as you know, I would build it as monoblocks.
I know we wrote about earlier, but I would like to repeat it here, for the others: I would use two 4u300 heatsinks, one on the one side with the pcb and the IRFP, one on the other side with the SIT (THF). You recommend for a stereo amp a 4u400 (which means 2x200 for one channel or 1x200 for a FET), so I think one 300 heatsink per FET could do it properly. However, with my solution there is a 3x20 cm wire between the pcb and the SIT - can you "confirn" that there wouldn't be problems? Or are the monos a no-go?
Thanks in advance!

 

[Zen Mod]

just be sure that SIT gate resistor position on pcb is populated with 0R (short) and mount flying gate resistor ditto on SIT gate, neatly heatshrinked (wire, resistor, gate pin)

do not twist GDS wires, just route them normally together

 

[bergy]

They are from another project, the Aleph 60. But Mighty ZM has his own PSU pcb, in blue.

it comes from this kit?
https://www.etsy.com/it/listing/129...668&click_sum=799f7a9d&ref=shop_home_active_1

ZM has these pcb?

 

[Plott]

just be sure that SIT gate resistor position on pcb is populated with 0R (short) and mount flying gate resistor ditto on SIT gate, neatly heatshrinked (wire, resistor, gate pin)

do not twist GDS wires, just route them normally together

Many thanks, will do it that way

@bergy, yes, they are from this kit
ZM has another one, you can ask him.