Bottlehead Forum

Bottlehead Kits => Moreplay => Topic started by: ToneDeaf on October 10, 2023, 10:09:02 AM

Title: Cathod bypass capacitor, and resistor.
Post by: ToneDeaf on October 10, 2023, 10:09:02 AM

   This is the 150uf electrolytic that is in parallel with a 619 ohm ?
 Can this capacitor value be upped? I have been looking, but can't find a Nichicon fine gold in 150uf's. Can it be replaces with a 220uf cap?

     Is the resistor in parallel with it. It's 619 ohms. Is it a metal film or a carbon film ?
 
     Thank you all.

Title: Re: Cathod bypass capacitor, and resistor.
Post by: Paul Joppa on October 10, 2023, 12:09:06 PM

Yes a larger capacitance is no problem.

Title: Re: Cathod bypass capacitor, and resistor.
Post by: Paul Birkeland on October 10, 2023, 12:29:17 PM

Quote from: ToneDeaf on October 10, 2023, 10:09:02 AM

Is it a metal film or a carbon film ?
 

Metal film.  It is mostly out of the signal path since the capacitor is across it.

Title: Re: Cathod bypass capacitor, and resistor.
Post by: Tom-s on October 11, 2023, 09:04:09 AM

I've replaced the cathode resistor bypass caps with Jupiter's wet electrolytics 250uf with good results.