Why? input resistor

najo49 · 1578

« previous next »
Pages: 1   Go Down

0 Members and 1 Guest are viewing this topic.

Offline najo49

  • Full Member
  • ***
    • Posts: 169
on: August 12, 2013, 05:06:46 AM
In my 45 amp direct coupled,C4s, with MQ iron. What is the resistor for, the 326 ohm that is in line with the input for.. Not the screen resistor but the inline one. Thanks Jan Olsen

Jann Olsen, [email protected].  Lowther medallion 2 with pm2a./ extended foreplay lll,/EROS phono /Grado ref/ SOTA star Vacuum SME V, /  45 amp direct coupled,c4s,mQ nickel  / paramour  2a3 w MQ iron /Original SEX monos /Jena Cables /heathkit wm6a/ proAc Tablette 50 sig , with push pull

Offline Grainger49

  • Hero Member
  • *****
    • Posts: 7175
Reply #1 on: August 12, 2013, 10:57:02 AM
Jan,

Do you mean from the hot lead to ground?  If so, that is the load across which the source develops its voltage.  An open circuit isn't friendly to sources here.


Offline 2wo

  • Hero Member
  • *****
    • Posts: 1261
  • Test
Reply #2 on: August 12, 2013, 11:17:23 AM
That sounds like a level matching resistor. If you wanted a bit more gain or just want to you could jumper that out...John

John S.

Offline Doc B.

  • Administrator
  • Hero Member
  • *****
    • Posts: 9659
    • Bottlehead
Reply #3 on: August 12, 2013, 11:40:59 AM
Screen resistor? Not likely since the tubes don't have screens. That is probably a grid stopper resistor. It keeps RFI out of the tube's grid.

Dan "Doc B." Schmalle
President For Life
Bottlehead Corp.

Offline 2wo

  • Hero Member
  • *****
    • Posts: 1261
  • Test
Reply #4 on: August 12, 2013, 06:46:47 PM
I misread the value (326 ohm), as Doc said it is a grid stopper and I would leave it...John 

John S.

Pages: 1   Go Up
« previous next »