Multi Clipper

sinner · Post by **sinner** » 12 Oct 2010, 21:41

I was in need of some kind of clipping testing ground, so I've made one. Not sure the DIP switch spacing, I hope it's fine.

BTW, I've made quite a few tagboard layout's but this is my first PCB. Be easy on my Mr.Dirk

sinner · Post by **sinner** » 12 Oct 2010, 21:44

List shown in the file is just an suggestion - put there whatever you like to put

IvIark · Post by **IvIark** » 12 Oct 2010, 22:14

Nice one Pawel. I got a few of those DIP switches in a variety of poles from one of the Chinese eBay seller, and made myself up something similar on perf. Well worth having as a quick tester.

sinner · Post by **sinner** » 12 Oct 2010, 23:56

Thank you buddy. Can you measure the distance between the joints of DIP for me? I have no any, so I'm unsure about an accuracy of this layout

IvIark · Post by **IvIark** » 13 Oct 2010, 00:10

The pins are 2.5mm apart and top to bottom is 7.5mm (ish) so it will fit in standard vero or perf over 3 rows, 1 column per pole.

sinner · Post by **sinner** » 13 Oct 2010, 00:17

So it should be fine

IvIark · Post by **IvIark** » 13 Oct 2010, 00:38

Yep, spot on

DrNomis · Post by **DrNomis** » 13 Oct 2010, 02:01

Cool idea,sort of reminds me of the Bixonic Expandora....

Another way to do this would be to use a multi-position rotary switch to switch in the different types of clipping....

sinner · Post by **sinner** » 13 Oct 2010, 15:43

DrNomis wrote:Cool idea,sort of reminds me of the Bixonic Expandora....

Another way to do this would be to use a multi-position rotary switch to switch in the different types of clipping....

Yep, I was thinking to use it with rotary switch at first but that can limit it to try one set of diodes at one time. On off SPDT'a are also the way to go

Cheers
Pawel

Dirk_Hendrik · Post by **Dirk_Hendrik** » 13 Oct 2010, 16:28

sinner wrote:Be easy on my Mr.Dirk

No probs here, the idea is nice for quick listening.

Bear in mind though that sonic differences between diodes can be a lot less if you compensate the gain. For instance, when you switch between a LED and a 1N400x sonic differences are audible because of the higher forward voltage of a LED. When you compensate that added level the sonic differences are suddenly very little.

Other than that parallelling diodes is not going to work. But you since you do'nt mention that you knew that already.

sinner · Post by **sinner** » 13 Oct 2010, 17:12

Dirk_Hendrik wrote:
sinner wrote:Be easy on my Mr.Dirk
Other than that parallelling diodes is not going to work. But you since you do'nt mention that you knew that already.

No I didn't, so to be sure - I can not stack couple, or few diode sections?

Dirk_Hendrik · Post by **Dirk_Hendrik** » 13 Oct 2010, 19:20

You can....physically.

But the diode with the lowest forward voltage drop will do all the work and since the voltage will never rise above that voltage.. the others will not have any influence...ever.

lolbou · Post by **lolbou** » 13 Oct 2010, 19:23

Any more clues about the voltage compensation while you're at it? What's the trick to achieve it?

sinner · Post by **sinner** » 13 Oct 2010, 21:04

Dirk_Hendrik wrote:You can....physically.
But the diode with the lowest forward voltage drop will do all the work and since the voltage will never rise above that voltage.. the others will not have any influence...ever.

Thanks for explanation

It forced me to redo it. It's super tight, I hope I'll be able to squeeze all the components I wanted to have

sinner · Post by **sinner** » 13 Oct 2010, 22:42

Final version with smooth out mica cap added

roseblood11 · Post by **roseblood11** » 13 Oct 2010, 23:08

Nice!

I found a similar layout on my hard disk. I don´t know who drew it...

sinner · Post by **sinner** » 13 Oct 2010, 23:20

This is what's inspired me. But sins I didn't know who draw it (unable to give a credit) I couldn't put it on my website, I've done my own. I like the possibilities of mine better, but the layout of HIS flexiclipper is smarter! I'll be better in time