Hey guys just made my dream come true a tube overdrive with 300v anode voltage from a 12v supply. The base schematic is from Matchless Hot Box (i used a BigMuff tone controll from RG site), it's also has a volume and gain controll. The SMPS it's based on a NIXIE design but i modify it so the 555 will oscillate at a higher freq. (about 40-45kHz). Some pictures and a sound clip that was recorded useing a ROG Condor cabsim. I'm waiting for your opinion (also if someone is intrested i will post all the schematics that i used and also the PCB design - they are made from 0 by me).
DarkRain wrote:Hey guys just made my dream come true a tube overdrive with 300v anode voltage from a 12v supply. The base schematic is from Matchless Hot Box (i used a BigMuff tone controll from RG site), it's also has a volume and gain controll. The SMPS it's based on a NIXIE design but i modify it so the 555 will oscillate at a higher freq. (about 40-45kHz). Some pictures and a sound clip that was recorded useing a ROG Condor cabsim. I'm waiting for your opinion (also if someone is intrested i will post all the schematics that i used and also the PCB design - they are made from 0 by me).
MoonWatcher wrote:
Silent ain't better. If someone cracks the shitwind, I want to know what's headed my way. Silence is for the library and the cemetery.
DarkRain wrote:Hey guys just made my dream come true a tube overdrive with 300v anode voltage from a 12v supply. The base schematic is from Matchless Hot Box (i used a BigMuff tone controll from RG site), it's also has a volume and gain controll. The SMPS it's based on a NIXIE design but i modify it so the 555 will oscillate at a higher freq. (about 40-45kHz). Some pictures and a sound clip that was recorded useing a ROG Condor cabsim. I'm waiting for your opinion (also if someone is intrested i will post all the schematics that i used and also the PCB design - they are made from 0 by me).
Good work Gabe!!! Sounds very good.
First thought...it would be awesome to make everything on one pcb and put it in a 1590BB enclosure. If you'd like I'd be glad to help with it!
Can't wait to see the schematic.
Cheers and keep the good work!
borislavgajic wrote:Shit man that PCB is terrorized........
but I like the sound
Boris
Was done using some not so good glassy paper - was done in Eagle but it looks better in reality then the picture... and also the traces ware little bit to thin... but i'm happy with it nobody will bother to open it
I'm very happy that you like the sound.
borislavgajic wrote:Shit man that PCB is terrorized........
but I like the sound
Boris
Was done using some not so good glassy paper - was done in Eagle but it looks better in reality then the picture... and also the traces ware little bit to thin... but i'm happy with it nobody will bother to open it
I'm very happy that you like the sound.
Best regards,
Gabriel Tudoran
Analog Sound
Hey man.....do not get me wrong..........I like everyting about this project..... .....can you post schem please......Bajaman was talking about this tubes need to be biased differently than 12AX7 and ecc83.........
I would like to make tubezipper and blackfinger with those submini tubes
PS: on my smps i used C1=1.8n (it's better to use a higher freq.), so all the rest is the same as here I'm waiting for some build reports. Thank you a lot guys for your interest.
Emanuele wrote:can you give me some details about the inductance? there are some more critical values to look at other than 100uH?
No critical values +/- 10% will do just fine. The inductance is on ferite core and shoud have over 500mA maximum current (600-800mA will be just fine). Nothing other then that (you could also experiment with 180-200uH).
MoonWatcher wrote:
Silent ain't better. If someone cracks the shitwind, I want to know what's headed my way. Silence is for the library and the cemetery.
WIll you be posting the layout for the mainboard as well ?
As himister said - it would be great to integrate everything onto one board - or maybe there's a reason you kept them seperate ?
Dan
Hey Daniel,
There it is the layout for MD, i wouldn't go to integrate the SMPS on the main board...could be trouble regarding noise... but it would be nice to do that.
borislavgajic wrote: It could be even smaller than 9V battery
great project.........
Boris
Thank you Boris,
Yes it could be much smaller then a 9v battery (next prototype will use 0805 SMD). I will make a more compact PCB (hope i can solder them after as my eyes are a little bit tierd). Thank you for your appreciation guys.
a tube overdrive with 300v anode voltage from a 12v supply. The base schematic is from Matchless Hot Box (i used a BigMuff tone controll from RG site), it's also has a volume and gain controll. The SMPS it's based on a NIXIE design but i modify it so the 555 will oscillate at a higher freq. (about 40-45kHz). Some pictures and a sound clip that was recorded useing a ROG Condor cabsim. I'm waiting for your opinion (also if someone is intrested i will post all the schematics that i used and also the PCB design - they are made from 0 by me).
nobody will bother to open it 
