Wampler - Ecstasy

rocklander · Post by **rocklander** » 17 Oct 2012, 22:27

so this?

: switching.jpg (3.5 KiB) Viewed 3235 times

Nocentelli · Post by **Nocentelli** » 17 Oct 2012, 22:36

rocklander · Post by **rocklander** » 17 Oct 2012, 22:47

whew! thanks muchly..

... will have a go (maybe this weekend) at a 1590a board...

rocklander · Post by **rocklander** » 23 Nov 2012, 21:28

have run over this a couple of times.. pretty sure it's okay, but happy to be told I've goofed. ecstasy in a 1590a layout

[now built and verified]

20150308 - uploaded the expressPCB file as requested

ecstasy1590a-groundplane.1.02.pcb.zip: (12.64 KiB) Downloaded 214 times

alexradium · Post by **alexradium** » 24 Nov 2012, 12:42

rocklander wrote:have run over this a couple of times.. pretty sure it's okay, but happy to be told I've goofed. ecstasy in a 1590a layout

bliss-layout-1590a-1.02(c).jpg

bliss-pcb-1590a-1.02.jpg

i just looked at a more recent version,first input cap is 33nF,47p ceramic disc between pins 6/7,22R on supply, 100n multilayer from V to ground near the IC,dividers are made by 47k for the diodes,the rest is 10k,elko caps 47uF.

rocklander · Post by **rocklander** » 24 Nov 2012, 19:56

alexradium wrote:
rocklander wrote:have run over this a couple of times.. pretty sure it's okay, but happy to be told I've goofed. ecstasy in a 1590a layout

bliss-layout-1590a-1.02(c).jpg

bliss-pcb-1590a-1.02.jpg
i just looked at a more recent version,first input cap is 33nF,47p ceramic disc between pins 6/7,22R on supply, 100n multilayer from V to ground near the IC,dividers are made by 47k for the diodes,the rest is 10k,elko caps 47uF.

more recent version of the box itself, or more recent version of the schem? if you have the schem, can you link/post?

alexradium · Post by **alexradium** » 25 Nov 2012, 09:21

schematic is the same,just slight different values,no big tonal changes anyway.

alexradium · Post by **alexradium** » 27 Nov 2012, 18:45

rocklander wrote:have run over this a couple of times.. pretty sure it's okay, but happy to be told I've goofed. ecstasy in a 1590a layout

bliss-layout-1590a-1.02(c).jpg

bliss-pcb-1590a-1.02.jpg

to be complete,this board needs a diode for reverse polarity protection,and a res/cap for supply filtering,i mentioned the values before.
Plus,a resistor from 9V for the led,optional.

rocklander · Post by **rocklander** » 27 Nov 2012, 19:31

alexradium wrote:
rocklander wrote:have run over this a couple of times.. pretty sure it's okay, but happy to be told I've goofed. ecstasy in a 1590a layout

bliss-layout-1590a-1.02(c).jpg

bliss-pcb-1590a-1.02.jpg
to be complete,this board needs a diode for reverse polarity protection,and a res/cap for supply filtering,i mentioned the values before.
Plus,a resistor from 9V for the led,optional.

to adjust the layout, I need a schematic.
I used this one. https://www.freestompboxes.org/viewtopic ... 20#p197137
if you want changes to the layout, please provide a verified schematic... or don't use the layout.. makes no bones to me.

rocklander · Post by **rocklander** » 11 Dec 2012, 09:15

I have now built this layout and it's tested as working verified. it's quite a diverse unit.. will see if I can squeeze all that hardware into a 1590a enclosure next.. eep!

rocklander · Post by **rocklander** » 18 Dec 2012, 09:30

and here's the build

guts

thn.technik · Post by **thn.technik** » 10 Mar 2013, 12:38

Hi,

I find this another photo of Ecstasy, but someone know what is this marked capacitor?

alexradium · Post by **alexradium** » 12 Mar 2013, 18:57

100pF

snofla1900 · Post by **snofla1900** » 19 Mar 2013, 15:09

I find this another photo of Ecstasy, but someone know what is this marked capacitor?
answer : 100 Pf

This seems very unlikely to me that a Wima cap that size would be 100 Pf more like something Nf !

beedotman · Post by **beedotman** » 19 Mar 2013, 18:36

snofla1900 wrote:
I find this another photo of Ecstasy, but someone know what is this marked capacitor?
answer : 100 Pf
This seems very unlikely to me that a Wima cap that size would be 100 Pf more like something Nf !

I have 220pF or 470pF Wima's bigger than 100nF, nothing strange here.

IvIark · Post by **IvIark** » 19 Mar 2013, 18:42

snofla1900 wrote:This seems very unlikely to me that a Wima cap that size would be 100 Pf more like something Nf !

I've got some 100pf Wima caps that are that size.

snofla1900 · Post by **snofla1900** » 20 Mar 2013, 14:34

Okay you convinced me ! Sorry .
I thought I knew it all , it appears I've never seen these before !
I'm only familiar with pf type caps in a much smaller housing.

Alf

jimini · Post by **jimini** » 23 Mar 2013, 21:54

Hi

One thing I don't get circuit -design wise is:

Why does every opamp and the diodes (D1,D2)get their 'own' voltage reference?

Is that really such an improvement versus one for all?

Regards JM

jymaze · Post by **jymaze** » 25 Mar 2013, 15:06

No, they don't need their own voltage reference, it is overkill. I would use only one voltage divider and make sure it is filtered well (you can also add a 22n poly cap in parallel with the electrolytic cap, it is even better).

jimini · Post by **jimini** » 25 Mar 2013, 16:42

Great,

So one can even reduce the part count of an already easy circuit!

Thanks Jymaze

Wampler - Ecstasy [traced]