Trench Recordings

Drip 670 v2 build questions
« on: July 12, 2020, 08:18:49 PM »
So I have a few questions on this 670 build. Instructions are not 100% clear and I'm left scratching my head...

Looks like I need order input attenuators still as it wasn't listed in the bom. Schematic says 600 omhs T. Any suggestions? Also how do I calculate the fuse size for this project? I'm using the Sowter power transformers and one Hammond transformer

Sowter
W0526  375-0-375V @ 0.2A
                    5V @ 2A
                    6.3Vct @ 5A

W0531   26.8V @ 0.5A

W0577   6,3V @ 2.6A
                     6.3V @ 3A

Hammond
546-186E10
186E10
115/230 56VA 10VCT

Any help would be appreciated. Thanks

 


Pusch3l

Re: Drip 670 v2 build questions
« Reply #1 on: July 13, 2020, 04:36:43 AM »
What build document you have?
you can use the ones from hairball for the 1176. Wiring those should be well described in the build document.

I took 5A fuses for my 2 builds but I only used sowter Transformer.

scott2000

Re: Drip 670 v2 build questions
« Reply #2 on: July 13, 2020, 06:33:30 AM »
Quote
Also how do I calculate the fuse size for this project?


The total volt-amps (VA)  that all the secondaries will use divided by the primary voltage will give you the primary current load....ish


Trench Recordings

Re: Drip 670 v2 build questions
« Reply #3 on: July 13, 2020, 11:33:09 AM »
Thank you. The v2 docs are lacking. I will reference v1 docs to mine out the missing information. Looks like a 3A fuse might do it

Rob Flinn

Re: Drip 670 v2 build questions
« Reply #4 on: July 13, 2020, 12:48:51 PM »
I used a 5A fuse & Daven attenuators, because I happened to get some at a good price.
regards Rob

Trench Recordings

Re: Drip 670 v2 build questions
« Reply #5 on: July 13, 2020, 02:11:42 PM »
Any real benefit to using a Mundorf Cap instead of the motor run cap in C304? I mean its in the power supply section so it doesn't make sense to put an audiophile cap in there does it? The other two C101/102 and C201/202 make sense to me because its in the audio path

Rob Flinn

Re: Drip 670 v2 build questions
« Reply #6 on: July 13, 2020, 05:18:24 PM »
Any real benefit to using a Mundorf Cap instead of the motor run cap in C304? I mean its in the power supply section so it doesn't make sense to put an audiophile cap in there does it? The other two C101/102 and C201/202 make sense to me because its in the audio path

I used a film cap there because in the long run they are going to be more reliable.    I don't remember if I used the Mundorf, but there are cheaper film caps out there that will work just as well if you don't want the cost of the Mundorf.
regards Rob

Re: Drip 670 v2 build questions
« Reply #7 on: July 13, 2020, 05:39:54 PM »
The total volt-amps (VA)  that all the secondaries will use divided by the primary voltage will give you the primary current load....ish

I usually take the value calculated as you indicate, and multiply the end result  by 1.25 and use the nearest standard value fuse.

 
Note to self:  Don't let c**ts wind you up

scott2000

Re: Drip 670 v2 build questions
« Reply #8 on: July 13, 2020, 08:46:55 PM »
and multiply the end result  by 1.25 and use the nearest standard value fuse.


Thank You!


 

Related Topics

  Subject / Started by Replies Last post
19 Replies
9980 Views
Last post October 05, 2009, 12:34:31 PM
by wtmnmf
122 Replies
49230 Views
Last post November 06, 2014, 09:53:36 PM
by buildafriend
18 Replies
2959 Views
Last post December 30, 2019, 01:03:21 PM
by Pusch3l
0 Replies
447 Views
Last post December 21, 2019, 10:06:26 AM
by JGabriel