Bottlehead Forum

Bottlehead Kits => Eros Phono => Topic started by: jminassi on March 04, 2022, 04:38:23 PM

Title: Purpose of Zero Ohm Resistor In Eros 2 Circuit
Post by: jminassi on March 04, 2022, 04:38:23 PM

PB,

While I can understand the use of a zero ohm resistor in a printed circuit board, especially where automatic insertion is used to stuff the boards, I am trying to understand what their purpose is in part of the Eros 2 circuit that is point-to-point wired.  Can you elaborate?

No biggie, just curious.

P.S.

I just passed my shunt regulator voltage tests.  Yippee!

Title: Re: Purpose of Zero Ohm Resistor In Eros 2 Circuit
Post by: johnsonad on March 05, 2022, 02:29:22 AM

It's used as a jumper.  They are easier to work with vs. the wire that was used in the Eros 1.

Title: Re: Purpose of Zero Ohm Resistor In Eros 2 Circuit
Post by: Paul Birkeland on March 05, 2022, 04:46:24 AM

To be more specific, when you try to strip a really short piece of the teflon jacketed wire, the jacket tends to just pop right off.

Title: Re: Purpose of Zero Ohm Resistor In Eros 2 Circuit
Post by: jminassi on March 05, 2022, 07:07:47 AM

Thanks to PB and Aaron for the explanation.

That PTFE coated wire is great in the it doesn't shrink back when you solder the wire, but stripping it is entirely painful.  My Ideal stripper simply doesn't work for Teflon.  I use an AMP manual wire stripper, and as you suggested it's hard to hold on to the wire while you strip it.

John