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Simplistic NJFET RIAA
Simplistic NJFET RIAA
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Old 18th October 2012, 12:37 PM   #8231
RCruz is offline RCruz  Switzerland
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Simplistic NJFET RIAA
Quote:
Originally Posted by Salas View Post
only the front stage rail RC can be skipped in the PDF guide circuits.
What do you mean by front stage ?

Input stage in the simplistic?

I removed the EL caps in the input stage of my actual build with good results... but we can never know it all...
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Old 18th October 2012, 01:38 PM   #8232
The Space Egg Corp is offline The Space Egg Corp  England
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Yeah...Thanks Salas.

I need good logistics !
The prices from my 'favorite' (ha, ha, ha !) UK component suppliers have gone ^ ^ ^ !!!
I get Nichicon KZ from eBay 'el Cheap-o' ( hope 'no fake-o' !).
Looks fine to me though.

The 'sonics' thing on this build is important to me.
I think maybe I will stick to the 'authorized' NJFET pdf shunt-reg...
...if only, as you say, people have said good 'synergy' of both parts.

I guess I should be OK with 3x 470uF 50v on 'authorised' PDF reg. then...
...a bit more capacity than 100uF, but OK ?

Me, I do the regs. on guitar-amp turret-board, so PCB not such a problem.

Thanks for your help Salas...
...some more dumb questions to follow, no doubt !

Later...............

Si.

PS...I think to use smaller IRF9520, IRF9540 on regs. also.
PDF says OK for this...& I make 2 regs. as well.

Dunno about all this 'balanced' stuff.
I see why Felipe has done it, with balanced amping.

Space Egg has clunky steam & valve bone-shaker !!!
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Old 18th October 2012, 01:42 PM   #8233
The Space Egg Corp is offline The Space Egg Corp  England
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Ricardo... ...you are UN-AUTHORIZED to do that ! Ha ! Ha ! Si.
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Old 18th October 2012, 02:55 PM   #8234
merlin el mago is offline merlin el mago
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Let me know what do you need about doing a balanced Simplistici NJFET RIAA?
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Old 18th October 2012, 04:24 PM   #8235
RCruz is offline RCruz  Switzerland
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Simplistic NJFET RIAA
Merlin... let us start with a schematic please
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Old 18th October 2012, 04:26 PM   #8236
RCruz is offline RCruz  Switzerland
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Simplistic NJFET RIAA
Quote:
Originally Posted by The Space Egg Corp View Post
Me, I do the regs. on guitar-amp turret-board, so PCB not such a problem.
Hi Space

Do you mean you make your own pcb ?... no p2p ?
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Old 18th October 2012, 04:50 PM   #8237
Salas is offline Salas  Greece
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Simplistic NJFET RIAA
Quote:
Originally Posted by RCruz View Post
What do you mean by front stage ?

Input stage in the simplistic?

I removed the EL caps in the input stage of my actual build with good results... but we can never know it all...
With double mono regs its not a bad move as I wrote, but for the PDF circuits only. Don't do that in the experimental one, its crucial for bias there.
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Old 18th October 2012, 05:32 PM   #8238
merlin el mago is offline merlin el mago
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Quote:
Originally Posted by RCruz View Post
Merlin... let us start with a schematic please
Not really different to an unbalanced simple I do two stereo Simplistic with the gain needed for my cart.
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Old 18th October 2012, 06:14 PM   #8239
RCruz is offline RCruz  Switzerland
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Simplistic NJFET RIAA
Quote:
Originally Posted by Salas View Post
With double mono regs its not a bad move as I wrote, but for the PDF circuits only. Don't do that in the experimental one, its crucial for bias there.
Crucial for bias ? Would you care to elaborate ?
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Old 18th October 2012, 06:36 PM   #8240
Salas is offline Salas  Greece
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The drop there is needed for the correct amount of current to be pulled by the input Jfet.
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