Bottlehead Forum

Bottlehead Kits => Mainline => Topic started by: IntarsiaGuy2 on April 05, 2022, 10:05:24 AM

Title: Resister Sanity Check
Post by: IntarsiaGuy2 on April 05, 2022, 10:05:24 AM

Based on the instructions on page 31, I would expect the 2.49K resister (no wattage mentioned - assuming 1/4 watt) would be smaller than the 220K 1W resister in the next step.  They are the opposite - the 2.49K resisters are large and look like 1 watt resisters.  The 220K resisters look like 1/4 watt.  (I measured the resistance to double check my color reading).  Just want to confirm this is correct before I continue.  Thanks.

Title: Re: Resister Sanity Check
Post by: Paul Birkeland on April 05, 2022, 10:31:44 AM

The 2.49K resistors that we used for eons became tough to get because of supply issues, so we have a different part substituted (it's still a nice Vishay/Dale part).  It is indeed physically larger than the 220K resistors, which are somewhat smaller than might be expected for their power rating.  (The 220K resistors dissipate under 1/4W in operation, so the demands are pretty low)

Title: Re: Resister Sanity Check
Post by: IntarsiaGuy2 on April 05, 2022, 10:38:03 AM

Thank you for the quick reply.  Onward!