EBS - Valve Drive  [schematic]

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Re: EBS Valve Drive

Postby indoma » 06 Feb 2010, 17:21

are the diodes before or after the 7812?
i think that everything before the 7812 could be omitted becouse it's probably just transformer stuff.
how could i help?
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Re: EBS Valve Drive

Postby indoma » 06 Feb 2010, 20:21

R1 Blu , Grn, Blk, Red 65k
R2 1K
R3 Brn ,Blk, Blk Yellow 1M
R4 Red , YEl, Blk, Orng 240k
R5 Brn, Grn, Blk, Brn 1k5
R6 Red, Red, Blk, Or 220k
R7 Red, Yel, Blk, Or 240k
R8 ??? do not see it..
R9 Brn, Blk, Blk, Or 100k
R10 Brn, Blk, Blk, Or 100k
R11 Yel, Purp, Blk, Red 47k
R12 Orng, Orng, Blk, red 33k
R13 ???
R14 Yel, Purp, Blk, Brn 1/2watt 4k7
R15 Brn, Blk, Blk, Red 1/2watt 10k
R16 Red, Red, Blk, Red 1/2watt 2k2
R17 Blu, Gry, Blk, Or 1/4watt 680k
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Re: EBS Valve Drive

Postby Sztrapacs » 06 Feb 2010, 21:07

Hello!

Valvedrive main scheme something like:
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Re: EBS Valve Drive

Postby darkglass » 08 Feb 2010, 08:23

Interesting pics!
I think the most we can get out of them is the building and assembling of the pedal... looks pretty neat.
But soundwise, I really don´t get what´s all the hype about... http://www.ebssweden.com/2009/valvedrive.htm IMHO the overdrive itself is pretty mediocre... there are way better (and more affordable) solidstate devices. Again, this is only my opinion.

I think I'll design something with a similar approach (bass tube Overdrive/Preamp pedal) but probably would use a really nice Tube Preamp (Alembic F2B probably) as a good (amazing actually) clean base tone, and then add as a second channel the Microtubes B3K with a 3 band active EQ, plus balanced output.

Well, at the end if wether is worth building it or not, it´s compeltely up to the DIYer :D.
Cheers and thanks again for sharing the pics!

Greetings from the snowy Helsinki

Doug.
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Re: EBS Valve Drive

Postby indoma » 08 Feb 2010, 13:32

probably you have right.
but as bass player i think that everything could help to learn how to modify an effect to have a good sound with bass is usefull.
it could be a good approach to the tube effects.
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Re: EBS Valve Drive

Postby gena_p1 » 17 Nov 2011, 10:37

Sweetalk wrote:NO!!! GREAT!! My bass player DIES for this pedal. Tell me if you need something


stupid death for Fender-oid (twin or alembic f2b) with diode limiting
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Re: EBS Valve Drive

Postby Dirk_Hendrik » 17 Nov 2011, 19:49

Renegadrian wrote:So there are no ICs in this buddy?! wow I am used to see one in tube pedals (byiang, tube driver, tonebone...)
Not that they are bad, but I want no ICs or trannies when I go tube...



That series of 1n4148 diodes and the way they're connected suggest diode clipping. That's fine when going tube?
Sorry. Plain out of planes.

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Re: EBS Valve Drive

Postby Ice-9 » 17 Nov 2011, 22:15

Ha ! yes 5 in4148 in series in one direction and 5 in series in the other direction, connected in parallel, defo diode clipping going on there.
It's fairly straight forward, if you want to start it , press start. You can work out the rest of the controls for yourself !

No silicon heaven ? preposterous ! Where would all the calculators go ?
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Re: EBS Valve Drive

Postby ppluis0 » 30 Jan 2012, 23:56

Hi Ice-9,

Where I can find the post of Valvedrive Custom Drive you say you tracing ?

I do not find using the search function on the forum...

Cheers,
Jose
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Re: EBS Valve Drive

Postby Ice-9 » 31 Jan 2012, 01:15

ppluis0 wrote:Hi Ice-9,

Where I can find the post of Valvedrive Custom Drive you say you tracing ?

I do not find using the search function on the forum...

Cheers,
Jose


You can find it in this thread, but it has no valves it turns out to be more or less a zendrive.

viewtopic.php?f=7&t=10688&hilit=valvette
It's fairly straight forward, if you want to start it , press start. You can work out the rest of the controls for yourself !

No silicon heaven ? preposterous ! Where would all the calculators go ?
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Re: EBS Valve Drive

Postby ppluis0 » 31 Jan 2012, 01:46

Ohh... no valve ? :roll:

Thank you for the link !!!

Jose
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Re: EBS Valve Drive  [schematic]

Postby chicago_mike » 22 Nov 2012, 08:12

8)
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Re: EBS Valve Drive

Postby Dirk_Hendrik » 22 Nov 2012, 09:04

Thanks matey! :hug:
Sorry. Plain out of planes.

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Re: EBS Valve Drive

Postby chicago_mike » 22 Nov 2012, 09:12

Check out all them diodes!!! :mrgreen:
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Re: EBS Valve Drive

Postby chicago_mike » 22 Nov 2012, 09:14

I need a safe way to test my transformer not in a circuit.

Any ideas? :)
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Re: EBS Valve Drive

Postby chicago_mike » 22 Nov 2012, 09:15

oops...wrong thread!!!!!!!
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