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 Forum index » DIY Hardware and Software » fonik's place
PCB offer: Thomas Henry's Controller LFO
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Jaba



Joined: Feb 27, 2009
Posts: 47
Location: Genova, Italy

PostPosted: Thu Mar 07, 2013 7:18 am    Post subject: 2n5461 Reply with quote  Mark this post and the followings unread

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)
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LektroiD



Joined: Aug 23, 2008
Posts: 977
Location: Scottish Borders
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PostPosted: Thu Mar 07, 2013 10:02 am    Post subject: Re: 2n5461 Reply with quote  Mark this post and the followings unread

Jaba wrote:
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)


€0.24 for the transistor, €7.95 for shipping Confused

I have to say projects that use rare parts are always problematic. I wish I'd noticed this sooner... Is it essential that is must be that exact transistor?

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fonik



Joined: Jun 07, 2006
Posts: 3759
Location: Germany
Audio files: 23

PostPosted: Thu Mar 07, 2013 1:36 pm    Post subject: Reply with quote  Mark this post and the followings unread

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.

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matthias
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LektroiD



Joined: Aug 23, 2008
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PostPosted: Tue Mar 12, 2013 2:45 pm    Post subject: Reply with quote  Mark this post and the followings unread

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...

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fonik



Joined: Jun 07, 2006
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PostPosted: Tue Mar 12, 2013 2:56 pm    Post subject: Reply with quote  Mark this post and the followings unread

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



Joined: Nov 05, 2012
Posts: 18
Location: Oslo

PostPosted: Fri Jun 14, 2013 2:24 pm    Post subject: Re: PCB offer: Thomas Henry's Controller LFO
Subject description: CHECK PM's
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fonik wrote:
Posted Image, might have been reduced in size. Click Image to view fullscreen.


Probably a newbie question, but which 1/8" jack sockets fit the front panel PCB?

Also, that riser you have on the LED, what part is that?

Thanks!
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fonik



Joined: Jun 07, 2006
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PostPosted: Mon Jun 17, 2013 12:27 am    Post subject: Re: PCB offer: Thomas Henry's Controller LFO
Subject description: CHECK PM's
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Heavy Metal Kid wrote:
fonik wrote:
Posted Image, might have been reduced in size. Click Image to view fullscreen.


Probably a newbie question, but which 1/8" jack sockets fit the front panel PCB?

Also, that riser you have on the LED, what part is that?

Thanks!


the sockets are available from thonk in europe, or from erthenvar in northern america.

i got these LED raisers from a local dealer. do you need a mouser part#? would have to search that myself.

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matthias
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fonik



Joined: Jun 07, 2006
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PostPosted: Mon Jun 17, 2013 12:29 am    Post subject: Reply with quote  Mark this post and the followings unread

LektroiD wrote:
I know this is a ridiculous question, but on the silkscreen the presets are shown to be a particular orientation. Is this necessary?

no. this the footprint that came with the CAD.

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matthias
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Heavy Metal Kid



Joined: Nov 05, 2012
Posts: 18
Location: Oslo

PostPosted: Thu Jun 27, 2013 2:47 am    Post subject: Re: PCB offer: Thomas Henry's Controller LFO
Subject description: CHECK PM's
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fonik wrote:
the sockets are available from thonk in europe, or from erthenvar in northern america.

i got these LED raisers from a local dealer. do you need a mouser part#? would have to search that myself.


Thanks!

The sockets got here fast. I'll go look for the LED raiser myself.
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bod



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

PostPosted: Thu Jul 18, 2013 12:44 pm    Post subject: Reply with quote  Mark this post and the followings unread

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
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fonik



Joined: Jun 07, 2006
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PostPosted: Tue Jul 30, 2013 6:02 am    Post subject: Reply with quote  Mark this post and the followings unread

bod wrote:
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

sorry for the late reply, have been on a two weeks vacation w/o internet access.

anyways, i have PCBs left.

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muziekzen



Joined: Jun 11, 2013
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Location: ITALY
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PostPosted: Wed Sep 04, 2013 10:44 am    Post subject: D2 Reply with quote  Mark this post and the followings unread

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
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muziekzen



Joined: Jun 11, 2013
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PostPosted: Wed Sep 04, 2013 10:46 am    Post subject: Reply with quote  Mark this post and the followings unread

Ok, I apologize for my previous post.

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

g
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fonik



Joined: Jun 07, 2006
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PostPosted: Wed Sep 04, 2013 11:24 am    Post subject: Reply with quote  Mark this post and the followings unread

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



Joined: Mar 20, 2012
Posts: 1510
Location: Chicago
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PostPosted: Wed Sep 04, 2013 11:37 am    Post subject: Reply with quote  Mark this post and the followings unread

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
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Jonachi



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

PostPosted: Thu Sep 26, 2013 7:22 am    Post subject: Reply with quote  Mark this post and the followings unread

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



Joined: Sep 02, 2013
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PostPosted: Sun Oct 06, 2013 12:41 am    Post subject: Reply with quote  Mark this post and the followings unread

Please?
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fonik



Joined: Jun 07, 2006
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PostPosted: Tue Oct 08, 2013 4:51 am    Post subject: Reply with quote  Mark this post and the followings unread

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.

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Jonachi



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

PostPosted: Tue Oct 08, 2013 4:53 am    Post subject: Reply with quote  Mark this post and the followings unread

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



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

PostPosted: Sun Oct 20, 2013 6:02 am    Post subject: Reply with quote  Mark this post and the followings unread

Hi, Would be "very inteerested" too.

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



Joined: Sep 02, 2013
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PostPosted: Sun Oct 20, 2013 1:14 pm    Post subject: Reply with quote  Mark this post and the followings unread

Yes, please let us know if (or when) these will be available again. I was late to the party!
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yan6



Joined: Jun 10, 2012
Posts: 4
Location: newmarket

PostPosted: Sat Oct 26, 2013 7:38 pm    Post subject: Reply with quote  Mark this post and the followings unread

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



Joined: Nov 05, 2012
Posts: 18
Location: Oslo

PostPosted: Wed Nov 20, 2013 4:29 am    Post subject: Reply with quote  Mark this post and the followings unread

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?
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fonik



Joined: Jun 07, 2006
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PostPosted: Thu Nov 21, 2013 3:22 am    Post subject: Reply with quote  Mark this post and the followings unread

Heavy Metal Kid wrote:
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?

ferrites filter noise. however, i build with 10R resistors first to have some short protection in case something is wrong with my build. most of the time i jut leave them in.

Quote:
- What is special about the SP3T switch, compared to a SPST or SPDT? They seem to be harder to find, for one. Smile

different manufacturers refer to the these toggle switches differently.
what you need is a single pole ON-ON-ON. and you are right, they are not that easy to get, i buy them from small bear. they have good prices that justify the postage:
smallbear SKU 0221C1

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

the BOM asks for a 1uF electrolytic (C12, polarized). or did you mean another cap?

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matthias
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Heavy Metal Kid



Joined: Nov 05, 2012
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Location: Oslo

PostPosted: Fri Nov 22, 2013 3:27 am    Post subject: Reply with quote  Mark this post and the followings unread

fonik wrote:

ferrites filter noise. however, i build with 10R resistors first to have some short protection in case something is wrong with my build. most of the time i jut leave them in.


Thanks!

fonik wrote:

different manufacturers refer to the these toggle switches differently.
what you need is a single pole ON-ON-ON. and you are right, they are not that easy to get, i buy them from small bear. they have good prices that justify the postage:
smallbear SKU 0221C1


Alright, ordered them from Small Bear.

fonik wrote:

the BOM asks for a 1uF electrolytic (C12, polarized). or did you mean another cap?


I must have made that 1uF ceramic disc up in my mind, disregard the question. Smile
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