Thanks Tom! The recovery is slowly proceeding, still got a few surgeries to do.. Luckily you are around tow answer uestions and helping people out. It keeps this small boat floating and that means a lot!
Haha, well I have very limited knowledge. But ultimately I like the idea of a community helping each other when and where we can. You can't and shouldn't have to answer every question. I'm sure everyone would prefer your expertise. But that's too much to ask of one guy. Thanks for being as hands-on as you are.
Small follow up - reverse the lug numbers - as it is everything but volume is backward. IE lug 3 needs to be lug 1 . Other than that, sounds just like the demos.
Is this definitely verified? Can't find the schematic but it's just a rat and the 2 x 100k for the bias voltage seems waaaay too high, surely they should they be 10k?
I built it - it works, and works nicely. 100k for the voltage divider should? be fine as Vref to the op-amp is connected via 1M - which would be 10 to 1. My knowledge on that might be off though.
My bad, most of the rat variants I've seen use 10k for the bias voltage but I did forget to check the original. I was only getting 1v or so on the bias with the 100k, dropped them down to 10k and now getting a healthy half of the supply, must have been something else though.
Thanks for making me look this over with fresh eyes. The havoc switch appears to just form a feedback loop between the output and input through a 100k resistor. Replacing the 100k resistor at the bottom right corner with a 100k pot would make the havoc mode much more useful. Gonna try this when I get home.
That's a big small break. These are both shweet circuits. Hope you're healing up.
ReplyDeleteThanks Tom! The recovery is slowly proceeding, still got a few surgeries to do.. Luckily you are around tow answer uestions and helping people out. It keeps this small boat floating and that means a lot!
DeleteHaha, well I have very limited knowledge. But ultimately I like the idea of a community helping each other when and where we can. You can't and shouldn't have to answer every question. I'm sure everyone would prefer your expertise. But that's too much to ask of one guy. Thanks for being as hands-on as you are.
DeleteYES!! Been waiting for this!! Hope your recovery is going well!
ReplyDeleteHope recovery is treating you well! Glad you got that itch for some more layouts!
ReplyDeleteTag it!
ReplyDeleteSmall follow up - reverse the lug numbers - as it is everything but volume is backward. IE lug 3 needs to be lug 1 . Other than that, sounds just like the demos.
Deletehttps://youtu.be/SrZsOLOOoug and a quick demo
ReplyDeleteExcellent! Thanks for verifying.
DeleteThe layout is updated with the correct lug numbering.
And thanks for the demo!
(Love that carpet...)
Thanks for all the layouts and hard work you do for the DIY community!
DeleteI want that rug.
DeleteAmazon has a bunch of sizes and materials to choose from.
DeleteRedrum! Redrum! Nevermind the layout - hope you're doing ok Anders! 🤗🤗
ReplyDeleteHeeeyyy, Ian!
DeleteThank you!
This comment has been removed by the author.
ReplyDeleteIs this definitely verified? Can't find the schematic but it's just a rat and the 2 x 100k for the bias voltage seems waaaay too high, surely they should they be 10k?
ReplyDeleteI built it - it works, and works nicely. 100k for the voltage divider should? be fine as Vref to the op-amp is connected via 1M - which would be 10 to 1. My knowledge on that might be off though.
Deletehttps://www.electrosmash.com/proco-rat
DeleteReference the power supply section - 100k is definitely correct.
This comment has been removed by the author.
DeleteMy bad, most of the rat variants I've seen use 10k for the bias voltage but I did forget to check the original. I was only getting 1v or so on the bias with the 100k, dropped them down to 10k and now getting a healthy half of the supply, must have been something else though.
DeleteThanks for making me look this over with fresh eyes. The havoc switch appears to just form a feedback loop between the output and input through a 100k resistor. Replacing the 100k resistor at the bottom right corner with a 100k pot would make the havoc mode much more useful. Gonna try this when I get home.
ReplyDeleteScratch 100k pot - 500k or 1M
DeleteThanks!!I would like to see MK 2 as well!!Cheers!
ReplyDeleteUpdated the layout with the correct lug numbering.
ReplyDelete