Brunetti - Mercury [traced]
- nickthemen
- Breadboard Brother
I played this box and it sounded like the best thing i heard in al while\!
The picture i got from the site.
This is the nr 1 on my list to build.
The picture i got from the site.
This is the nr 1 on my list to build.
- Attachments
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- mercuri.JPG (27.24 KiB) Viewed 9833 times
- Greg
- Old Solderhand
culturejam wrote: We are equal opportunity exposure artists.
- SPeter
- Cap Cooler
- Greg
- Old Solderhand
If we have a schematic.. it'll be in the thread.non_non wrote:Schematic ?
THx
Or.. we'd be very happy for you to provide one.
Thx
culturejam wrote: We are equal opportunity exposure artists.
- Gila_Crisis
- Resistor Ronker
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I played one and tried all their other pedals and amps, when I went to their factory-visit in Modena in February.
They do really fine amps and stompboxes! (I own an XL-Revo head with an XL-Cab and an Overtone2 valve preamp, I really love this brand)
They do really fine amps and stompboxes! (I own an XL-Revo head with an XL-Cab and an Overtone2 valve preamp, I really love this brand)
Zwischen Ordnung und Chaos fangt die Musik an
- roseblood11
- Tube Twister
btw: That´s Gregor Hilden, from Münster/Germany. Great Blues Player!!!
He has a lot of demos on youtube:
https://www.youtube.com/user/gregsguitars?blend=1&ob=4
- mictester
- Old Solderhand
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Word of warning - don't try to use the ordinary ICL7660. Make sure you get the "S" version - it has a much higher clock frequency and is therefore much less likely to cause interference to your signal.roseblood11 wrote:Great work!
The voltage doubler ic (icl7662) is a discontinued product. Would be better to chose a max1044 or icl7660S for a clone...
"Why is it humming?" "Because it doesn't know the words!"
- nickthemen
- Breadboard Brother
- flood
- Resistor Ronker
Information
what about the 7660CPA?mictester wrote:Word of warning - don't try to use the ordinary ICL7660. Make sure you get the "S" version - it has a much higher clock frequency and is therefore much less likely to cause interference to your signal.roseblood11 wrote:Great work!
The voltage doubler ic (icl7662) is a discontinued product. Would be better to chose a max1044 or icl7660S for a clone...
In the interest of full disclosure, I am Animal Factory Amplification.
- Gila_Crisis
- Resistor Ronker
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sorry but this schem look a bit strange to me.... and where is the 4th pot??nickthemen wrote:Nice pics !
This is what i got from it:
Zwischen Ordnung und Chaos fangt die Musik an
flood wrote:what about the 7660CPA?mictester wrote:Word of warning - don't try to use the ordinary ICL7660. Make sure you get the "S" version - it has a much higher clock frequency and is therefore much less likely to cause interference to your signal.roseblood11 wrote:Great work!
The voltage doubler ic (icl7662) is a discontinued product. Would be better to chose a max1044 or icl7660S for a clone...
You can use the MAX1044 with no problems and you can jumper two legs to get the sw. freq. above audio levels
- flood
- Resistor Ronker
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the max1044 isn't available easily where i live (india). import is too expensive... the 7660CPA OTOH is fairly ubiquitous.
In the interest of full disclosure, I am Animal Factory Amplification.
- nickthemen
- Breadboard Brother
This is what i can get the most out of it, maby stan can read the c values for us that are hidden in the pics.
- bajaman
- Old Solderhand
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Hi
That is reasonably accurate, however C3 is connected only to the wiper of the 250k gain pot - the other terminal is not connected to anything.
There is a 10n capacitor in parallel with the drain load 22k resistor on the second fet stage, and there is a capacitor connected between the op amp output and inverting input.
ALSO - the picture taken from the Brunetti site shows quite a few differences - 2 back to back 3mm red leds connected in the op amp feedback loop, a small diode instead of a resistor for the second fet source connection, a 100k output volume pot instead of the 50k pot just to name a few changes (there are more if you look closely - no prizes for finding them though )
SO - which is the current version?????
cheers
bajaman
That is reasonably accurate, however C3 is connected only to the wiper of the 250k gain pot - the other terminal is not connected to anything.
There is a 10n capacitor in parallel with the drain load 22k resistor on the second fet stage, and there is a capacitor connected between the op amp output and inverting input.
ALSO - the picture taken from the Brunetti site shows quite a few differences - 2 back to back 3mm red leds connected in the op amp feedback loop, a small diode instead of a resistor for the second fet source connection, a 100k output volume pot instead of the 50k pot just to name a few changes (there are more if you look closely - no prizes for finding them though )
SO - which is the current version?????
cheers
bajaman
be kind to all animals - especially human beings
- nickthemen
- Breadboard Brother
You have very sharp eyes bajaman!
My gues is that the site picture is the older one.
My gues is that the site picture is the older one.
- nickthemen
- Breadboard Brother
- roseblood11
- Tube Twister
flood wrote:what about the 7660CPA?mictester wrote:Word of warning - don't try to use the ordinary ICL7660. Make sure you get the "S" version - it has a much higher clock frequency and is therefore much less likely to cause interference to your signal.roseblood11 wrote:Great work!
The voltage doubler ic (icl7662) is a discontinued product. Would be better to chose a max1044 or icl7660S for a clone...
No, only the "S"-version has a oscillator frequency that´s way above the audiosignal (if pins 1 and 8 are connected).
Other versions may produce noise...