Matsumin's Valve Caster

[bhound]

Matsumin's Valve Caster... can someone please help me with this. I have built as shown, same component values, only changed tone lugs. old forum didn't seem to address anyone elese getting horrible "grounding" or similair noise. Also not good at using this  forum site

[Zben3129]

Welcome to the forum!

Heres a thread on the Matsumin, quite lengthy

http://www.diystompboxes.com/smfforum/index.php?topic=63479.0

I'll see if I can help tomorrow, but I must got to bed now, I'm falling asleep typing this 

Zach

[Aren]

Hi,
Check out the thread, but this may be a quick way to help you.
I had the same problem, and it was solved completely by adding 7812 regulator in series with the DC rail (and 470uF cap to ground right before it as well).

[bhound]

What is a 7812 regulator in series with the DC rail

[bhound]

Thanks all you cool and happening cats, for any help. I have read eveything on the forum and everyone seems to want more gain......... Not me!! I just want more guitar and  less hash & buzz and all that nasty funk

[Zben3129]

Me too

I'm currently on the warm, nice tone, idk what I want gain phase. I'm basically doing low gain mods to high gain stuff 


Anyways, a voltage regulator, well, regulates the voltage. If you hook up a 12v regulator and put in say 15.8 volts, you will get 12v out. Same as if you put 17 volts in. 12 out.

Of course, thats a basic (and probably wrong) description.

Zach

[bhound]

could someone tell me where.. in laymens terms, that a 7812 regulator and cap would go on the layout or schematic. to get rid of the hash & buzz.

[Renegadrian]

Hi, it would be great to go deep with this voltage regulator mod, and maybe report it in the "main" topic...
Anyway, did you try it with a stabilized 12v? I go with unstabilized and got some noize, I borrowed to my GF brother and he had NO noize at all with stabilized 12v...

[Aren]

What you do is just put a 100uF cap across the DC jack (positive leg to positive rail, neg. leg to neg. rail), then, instead of connecting the positive rail directly to the circuit, connect it to the regulator's pin1, ground to pin2, and the circuit to pin3.
Here is the regulator's pinout:


Is this clear?

[Renegadrian]

What you do is just put a 100uF cap across the DC jack (positive leg to positive rail, neg. leg to neg. rail), then, instead of connecting the positive rail directly to the circuit, connect it to the regulator's pin1, ground to pin2, and the circuit to pin3.
Here is the regulator's pinout:


Is this clear?

How did you put this one in the enclusure? Did you screw it down? Does it get hot?

[dano12]

What you do is just put a 100uF cap across the DC jack (positive leg to positive rail, neg. leg to neg. rail), then, instead of connecting the positive rail directly to the circuit, connect it to the regulator's pin1, ground to pin2, and the circuit to pin3.
Here is the regulator's pinout:


Is this clear?

How did you put this one in the enclusure? Did you screw it down? Does it get hot?

Depending on the mA rating of your power supply, it will get *really* hot. Put a heat sink on it for sure.

[bhound]

Aren thanks, to you and the other dudes and dudettes . The answer was a regulated power supply,  A must have for this design. But I am still going to put the v.r. in the circuit. Thanks again. Building pedals has became my favorite thing to do! This is my second tube effect. Also did the real Mctube. Anyone have a layout for the tube cricket,? Microamp from Beavis audio...... AWSOME site!! The Schematic is their, but I screwed up the layout and threw the whole project away. JIMMY K>a.k.a.BHOUND I have a bloodhound. Not what you perverts where thinking???

[Aren]

What I did was simply to to screw it to the enclosure, that acts as a heatsink. It doesn't get that warm with my wallwart, but it keeps it on the safe side.
bhound - If you intend to keep using a regulated supply, there is no need for the 7812. In fact, it may not work at all.