PCB offer: Thomas Henry's Controller LFO

Jaba · Joined: Feb 27, 2009 Posts: 48 Location: Genova, Italy

Hi LektroiD,

I don't know about equivalent FETs, but Banzai has the 2n5461 p-channel FET here:
http://www.banzaimusic.com/2N5461.html

I hope it helps
cheers
PaoloV(Jaba)

LektroiD · Posted: Thu Mar 07, 2013 10:02 am Post subject: Re: 2n5461

fonik · Posted: Thu Mar 07, 2013 1:36 pm Post subject:

i took a look at my conversation with scott stites and thomas henry from the beginning of this project, and if i got it correct any P-Channle JFET should do. you could use a socket to be on the safe side.
thomas' goal was to have curcuits that don't use rare parts. and i know scott used a NTE part.

BTW if the transistor is only 0,24 it is not a rare part, i would guess. you get it from reichelt.de, and they are not known for stocking rare parts... maybe it is just that P-channel is not that common as N-channel in general.

someone over at muffs is going to try different p-channel jfet's, so we will know more soon.

LektroiD · Posted: Tue Mar 12, 2013 2:45 pm Post subject:

I know this is a ridiculous question, but on the silkscreen the presets are shown to be a particular orientation. Is this necessary? I ask as the 25K ones I have are 1-turn and the dial is facing one way. I know I can also use 50K, I don't have enough spare...

I'm pretty certain of the answer here, but just wanted confirmation, just in case there's some magic ogre lurking in the wrong orientation...

fonik · Posted: Tue Mar 12, 2013 2:56 pm Post subject:

no. it doesn't matter. i myself mounted them all headed into the same direction, just for the asthetics...

Heavy Metal Kid · Joined: Nov 05, 2012 Posts: 18 Location: Oslo

fonik

fonik · Posted: Mon Jun 17, 2013 12:29 am Post subject:

Heavy Metal Kid · Joined: Nov 05, 2012 Posts: 18 Location: Oslo

bod · Joined: Apr 28, 2009 Posts: 148 Location: Glasgow

Hi fonik, do you have any PCBs for this left? I'd love a circuit PCB and a eurorack PCB, maybe even 2 of each if there's enough! Smile

Or maybe someone has a set spare that they'd be willing to part with?

Fingers crossed....

Cheers,

Bod

fonik · Posted: Tue Jul 30, 2013 6:02 am Post subject:

muziekzen · Posted: Wed Sep 04, 2013 10:44 am Post subject: D2

Hello,

I don't know if I am blind, but I just can not find D2 on the PCB..

can anyone help me on this? Smile

thank you

g

muziekzen · Posted: Wed Sep 04, 2013 10:46 am Post subject:

Ok, I apologize for my previous post.

I just read on the previous page that D2 is not needed.

g

fonik · Posted: Wed Sep 04, 2013 11:24 am Post subject:

i found it to be redundant, however, IF you experience double triggers you could mount it piggypack in parallel to R44.

elmegil · Posted: Wed Sep 04, 2013 11:37 am Post subject:

Well, except that I found in my own particular build, without D2, the trigger was firing on the falling edge of the square out as well as the rising edge.

I put it down to component / build variation. It shouldn't be difficult to do the build without D2, and then add it if needed. If you want better detail, PM me and I can send a picture of how I did the mod.

Edit: Matthias beat me to it Smile

Jonachi · Joined: Sep 02, 2013 Posts: 4 Location: Sweden

Are these still available!? PCB and Panel that is. If so where can I buy them?

Jonachi · Joined: Sep 02, 2013 Posts: 4 Location: Sweden

Please?

fonik · Posted: Tue Oct 08, 2013 4:51 am Post subject:

currently no circuit PCBs left, however, i re-ordered a very few spares to have complete sets again (still have some front panels and PCBs).

as soon as they arrived i will check my lists and see what is available for purchase...

the thing is, i don't run an online store and i don"t have stock. i just produce based on interest gathered the forum's threads started for that purpose.

Jonachi · Joined: Sep 02, 2013 Posts: 4 Location: Sweden

Sounds great fonik! Sign up as "very interessted". I'm on muffwiggler aswell (same nick).

alangave · Joined: Jan 06, 2008 Posts: 4 Location: France

Hi, Would be "very inteerested" too.

Indeed, if we can help you cleaning your extra stock!

Jonachi · Joined: Sep 02, 2013 Posts: 4 Location: Sweden

Yes, please let us know if (or when) these will be available again. I was late to the party!

yan6 · Joined: Jun 10, 2012 Posts: 6 Location: newmarket

Yes, I too am late to the game and would love one of these

Heavy Metal Kid · Joined: Nov 05, 2012 Posts: 18 Location: Oslo

Alright, finally got around to building this.

Some questions arise:

- What is the purpose of the ferrite bead, since it can be substituted with a cable?
- What is special about the SP3T switch, compared to a SPST or SPDT? They seem to be harder to find, for one. Smile

- I have a hard time tracking down a 1uF disc capacitor. Will a 1uF monolithic ceramic capacitor do?

fonik · Posted: Thu Nov 21, 2013 3:22 am Post subject:

Heavy Metal Kid · Joined: Nov 05, 2012 Posts: 18 Location: Oslo