Moderators: pompeiisneaks, Colossal
lol, keep digging. But don't think about the innards of an amp too much or all the places that the B+ is separated from the chassis by dimensions much thinner than that insulator spacer. Whatever you do, don't think about the first stage preamp tube and the voltage on its plate and the proximity to the grid, and the grids path to your guitar, not to ground either.the idea of having a thin piece of material between 4 or 5 hundred volts and my guitar strings
No need to thank me, sleep well. 
The point myself and others are trying to make is that there are places all over a guitar amp where high voltages are only a thin piece of material away from ground. The diaelectric in a filter cap for instance is a lot thinner than the mosfet insulator. The cap is just two pieces of metal foil with a thin insulator between them and then it is rolled up. One piece of foil is grounded and the other has high voltage on it. Or the thin enamel coating on the wire in your power and output tranny. Do any of those things bother your piece of mind? If the insulator or diaelectric fail, you will short B+ to ground and you will blow a fuse. Ground is ground and IF your amp is properly wired you will never have B+ on your guitar strings. If your ground is not ground then you have plenty to worry about no matter if you have a VVR installed or not. I really don't understand your paranoia.iknowjohnny wrote:i realize they are made for that purpose, but like i said it just doesn't give me peace of mind having B+ that close to chassis.
i'm just not particularly enamored with the idea of having a thin piece of material between 4 or 5 hundred volts and my guitar strings. Whether there are any possibilities for shorting such as vibration loosening the screw and the insulator moving over time or not. i just don't feel it's a great idea for me. Thats all.
Sometimes I wonder why I bother with selling them at all. I really don't make a lot of money off of the kits and it eats up a lot of my time building them and helping people get them working. They are just as safe as anything else in an amp with high voltage on it.bnwitt wrote:Dana,
As you mention, there are Mosfets with the drain only on a pin and not connected to the heatsink/body. I would really suggest for liability reasons that you change the stock mosfet in your VVR kits to one that does not have the drain common to the heat sink body and raise the price of your kits if necessary. Just my two cents.
Well now that's a completely different subject in itself. I often wonder why I spend hours producing layouts for builders to use when I seldom even get a thank you much less any cash. I would say that 70% of the people IM'ing me for the Asteroid layout don't even send a thank you email after receiving it. I don't really know if they even got it due to that, but, it's worth sharing for the 30% who say "Wow! That's awesome!". I am sure there are many Asteroids out there that were built with no or few mistakes thanks to Allyn's and my work yet you don't see much feedback on it. People today have forgotten the last step in asking for something free from someone else. They just take it and boogie without the thank you's. It's very sad but I believe it is just a symptom of a the selfish nature in the world today. Where is today's Mahatma Ghandi or Mother Theresa? We've got Trump and Rosie.UR12 wrote:Sometimes I wonder why I bother with selling them at all. I really don't make a lot of money off of the kits and it eats up a lot of my time building them and helping people get them working.
+1UR12 wrote:If your that afraid of the voltages in an amp I would suggest you find another hobby.iknowjohnny wrote:Whoa !!!! I had no idea the insulator was keeping B+ from ground !
Same here, I did nothing more than "suggest" you find another hobby and I will add "before you get yourself killed". I have never asked you for anything and never will. For you to "suggest" that my circuit is not safe was wrong. There is absolutly nothing about it that is unsafe and your paranoid fears are unfounded. Like you said, whatever. Are you sure your name isn't Gary Mooreiknowjohnny wrote:Whatever. I did nothing more than *suggest* that it sounded like there was a potential for danger. then i'm insulted and then insulted again.
Good Point!!bnwitt wrote: Well now that's a completely different subject in itself. I often wonder why I spend hours producing layouts for builders to use when I seldom even get a thank you much less any cash. I would say that 70% of the people IM'ing me for the Asteroid layout don't even send a thank you email after receiving it. I don't really know if they even got it due to that, but, it's worth sharing for the 30% who say "Wow! That's awesome!". I am sure there are many Asteroids out there that were built with no or few mistakes thanks to Allyn's and my work yet you don't see much feedback on it. People today have forgotten the last step in asking for something free from someone else. They just take it and boogie without the thank you's. It's very sad but I believe it is just a symptom of a the selfish nature in the world today. Where is today's Mahatma Ghandi or Mother Theresa? We've got Trump and Rosie.
I did NOT suggest that at all. Show me where i did ! i only suggested that to ME....let me make that clear...to ME, it seemed *possibly* unsafe. Not unsafe, not surely unsafe, not even likely u nsafe. Just SEEMED like it could POSSIBLY be unsafe. Now that you have suggested other places i see that matbe it's no worse. On the other hand i also see far less possibility that a tube or cap is going to short B+ to ground than the possibility that someone may install the mosfet and insulator wrong, or that they could damage it and not realize it. Especially being clear.For you to "suggest" that my circuit is not safe was wrong
If that is true, than you surely understand how your comments came accross as suggesting that VVR is "unsafe".I'm all too familiar with how words are used in that manner on forums.
I have said it often but not nearly enough: Dana, thank you for sharing this with the DIY community. An even bigger thank you for helping "us" trouble shoot installs that are clearly NOT your responsibility.I would say that 70% of the people IM'ing me for the Asteroid layout don't even send a thank you email after receiving it. I don't really know if they even got it due to that, but, it's worth sharing for the 30% who say "Wow! That's awesome!".
Maybe so, but believe it or not i take no delight in trying to dis-prove anything that might go against my argument. I only want clarity, and thats paramount, period. And i was not in in any way shape or form being disrespectful or insulting. That is all i want known. Well, that and the *fact* that i was targeted with insults. No one is going to convince me that those things were not leveled at me because i am all too familiar with how it goes down at forums as i said. In simple terms, whether i was misunderstood or they were, the fact remains that it was not I that took the first shot. Again, i know what i heard....i've seen it way too many times to mistake it. And w/o exception every time there always an excuse explaining how it wasn't an insult because it's always done in a way thats crafted as to be explainable if the occasion reqires it as in this instance.If that is true, than you surely understand how your comments came accross as suggesting that VVR is "unsafe".
