G7 Caps Value (Bis)

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Jazzy_Pidjay

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Joined
Jun 7, 2004
Messages
370
Location
Paris (FRANCE)
Hi everyone !

unfortunately i haven't save my post about the G7 caps values and goal.
what i'm remember is :

- The First 2µ2/250 Polyester -> Decharging to the Masse the 160v ?

- The second 2µ2/250 Polyester -> Blocking "Signal Path"

- The two 100nF Polyester -> Smooth power & reject interference

- The 10n Polystyren -> Control voltage in capsule "Signal Path"

- The 1n Polystyren -> Coupling (Blocking) the tube grid "Signal Path"

- The 100µ/35 and 1µ/63 OR 220µ/35 -> Bypass caps to increase the gain in the tube


* anyone know if it's right ??

* what is the better choice, 100µ/35 + 1µ/63 or 220µ ? why ..?
what is the goal ?

Thanks, i think know the goal of the caps it's important to the beginner to choose his component, this is not easy to understand exactly which caps play a role in the sound quality !
 
G

Guest

Guest
The 1n Polystyrene is a coupling (blocking) capacitor for the tube grid.

The larger capacitor(s) on the cathode are bypass caps. They provide a local feedback that increases gain in the tube. Either of the two choices work fine, I don't know which is best. I used 100uF and 1uF in mine and it works really well.
 

Jazzy_Pidjay

Well-known member
Joined
Jun 7, 2004
Messages
370
Location
Paris (FRANCE)
i don't know nothing in electronic :oops:

so

coupling = blocking !!! :grin:

i don't know what is it, but it help me
to choose my components !! thanks !
 

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