Came across John K's vero of this circuit with a few mods (Mid pot, bipolar charge pump) and figured we needed a layout for it as well. Runs on 9-12v. Pots are all board mounted with the tube off board. Here's John's original layout.
one question, according this schem: http://www.freestompboxes.org/download/file.php?id=26626&sid=c5972154d713f729e428f11df7ffa3ab&mode=view resistor from 7 leg tl 072 after cap 47n =100k, but David's layout has 100 ohm. Which variant right?
In many designs I see a 22uf capacitor upside down on pin 1 and 2 of the TL072, what would be its real position? The negative towards the pins or the positive towards the pin?
Toobs!!!
ReplyDeleteThanks (as always) for the interesting and varied layouts, David.
I love this... will try soon
ReplyDeletedire straits in a box
ReplyDeleteYOU CAN PUT IT AS VERIFIED, IT HAS GREAT SOUND, I SURPRISED
ReplyDeletemade it today! took soviet old 6р2п tube, using dc\dc convertor from 12v to 6,3v to heater. Great sound! Thanks,David!
ReplyDeletehttp://www.kitrae.net/music/Music_mp3_Tube_Driver_Versions.html
ReplyDeleteone question, according this schem: http://www.freestompboxes.org/download/file.php?id=26626&sid=c5972154d713f729e428f11df7ffa3ab&mode=view
ReplyDeleteresistor from 7 leg tl 072 after cap 47n =100k, but David's layout has 100 ohm. Which variant right?
the voltage of the resistors and capacitors remains the same?
ReplyDeleteresistors 1/4 watts ?
capacitors ?
Is the tube just a 12ax7?
ReplyDeleteyes
DeleteLove it works great. Thanks again.
ReplyDeleteLove it works great. Thanks again.
ReplyDeleteHello guys, I have a beep in the background, I already changed the valve (I have 2 12at7) the rest works and sounds great
ReplyDelete
ReplyDeleteIn many designs I see a 22uf capacitor upside down on pin 1 and 2 of the TL072, what would be its real position? The negative towards the pins or the positive towards the pin?