Author Topic: A/DA Flanger does TZF?  (Read 269284 times)

stumper1

Re: A/DA Flanger does TZF?
« Reply #740 on: December 27, 2007, 02:20:20 AM »
So....almost a year after I started building this - it's almost done.  It works!!! ;D  Haven't dialed it in yet - been ignoring the wife all day so have to stop for now.

Does the jack for the expression pedal need to be isolated from the box/ground?  It looks like it should be.  Unfortunately I wasn't thinking about that when I drilled the box :(
Deric®

LaceSensor

Re: A/DA Flanger does TZF?
« Reply #741 on: July 23, 2012, 05:18:49 PM »
Started my build of this today, got a working flange and it sounds epic. Dont have a scope so im doing it all by ear, and im happy even with that :)

Cant wait to box this mother hubbard!

LaceSensor

Re: A/DA Flanger does TZF?
« Reply #742 on: July 23, 2012, 06:59:03 PM »
Followed the videos, thanks Moosapotamus :)

Could for the life of me get a decent frequency adjustment with the stock Clock Capacitor.
Only changing it to a 22pF cap could I get very close to the required values.


moosapotamus

Re: A/DA Flanger does TZF?
« Reply #743 on: July 23, 2012, 08:48:20 PM »
Glad to hear you got her working! 8)

~ Charlie
moosapotamus.net
"I tend to like anything that I think sounds good."

Ry

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Re: A/DA Flanger does TZF?
« Reply #744 on: July 23, 2012, 09:25:01 PM »
Hahaha, I just realized that I still have my working board sitting on a shelf.  I was so overwhelmed by the possible mods that I never could decide which ones to implement and, thus, never put it in it's awesome enclosure.
 :icon_redface:

I need to finish this project.

Dave W

Re: A/DA Flanger does TZF?
« Reply #745 on: July 23, 2012, 09:34:21 PM »
Hahaha, I just realized that I still have my working board sitting on a shelf.  I was so overwhelmed by the possible mods that I never could decide which ones to implement and, thus, never put it in it's awesome enclosure.
 :icon_redface: I need to finish this project.
Build it stock. Sounds great just like that, IMHO.
That's where it's at.

LaceSensor

Re: A/DA Flanger does TZF?
« Reply #746 on: July 24, 2012, 05:16:27 AM »
Glad to hear you got her working! 8)

~ Charlie

Cheers, any thoughts on the clock cap swap?

Fender3D

Re: A/DA Flanger does TZF?
« Reply #747 on: July 24, 2012, 07:33:01 AM »
Such small capacitor value may be influenced by track width, tin amount, pins lenght, rosin residuals...
You should try and measure it on PCB (switched off BTW  :icon_mrgreen: )
"NOT FLAMMABLE" is not a challenge

moosapotamus

Re: A/DA Flanger does TZF?
« Reply #748 on: July 24, 2012, 08:36:46 AM »
Build it stock. Sounds great just like that, IMHO.

Ditto ;)

Cheers, any thoughts on the clock cap swap?

Another thought... Since recently getting some bad 4047 chips, I've noticed that swapping out one 4047 for another in a previously calibrated circuit can really mess up the calibration. Perhaps you happened to get a 4047 that's on the edge of the manufacturing specs, and so it required a smaller cap, maybe?

~ Charlie
moosapotamus.net
"I tend to like anything that I think sounds good."

LaceSensor

Re: A/DA Flanger does TZF?
« Reply #749 on: July 24, 2012, 09:07:53 AM »
Hmmm, I think I have another chip but its working ok now...hmmm. fact is I didnt actually have a 39pF cap so started with a 47pF...

LaceSensor

Re: A/DA Flanger does TZF?
« Reply #750 on: July 24, 2012, 06:30:06 PM »
Heres a couple shots of mine. Need to decide how to decorate it.





The on off (right ftsw) is a red diffuse under a clear bezel, blinks in time with the LFO
The left ftsw is for the polarity of the harmonics. Bi-color common cathode, yellow = odd, green = even.

Wasnt sure how to build this into the case, ended up dremeling near the top of the PCB to allow a bit more clearance for the footswitches.
Then I figured it just work out fine to have the jacks on the side. Made putting it together a breeze.

This was a super enjoyable build. before boxing I switched the threshold pot for a 100kb and it works much better now.
I used a 2n5457 FET for the transistor. Seemed the same as J201. 2SK30 which Ive also seen mentioned didnt work well...

I now am waiting for a C pot for the rate. With a 500kB, it really sucks ;)
Any word on what a 1MC would be like? I have a couple of those in my stocks...Would this offer faster sweeps, or just even more slow ones?
I saw someone mentioned using a 250kC, but I couldnt get one (only a 200kC, and a 500kC, both in the mail now)

Cheers for all the work on the boards and the information on these pages.

edd29

Re: A/DA Flanger does TZF?
« Reply #751 on: July 24, 2012, 07:54:25 PM »
Nice and  clean  build .
 You have a similar setting with mine lfo bi-color led for odd, even switch
But I have a cheap plastic case for the cheap vero board layout,
But the sound is amazing jet plane .

moosapotamus

Re: A/DA Flanger does TZF?
« Reply #752 on: July 25, 2012, 02:18:05 PM »
I now am waiting for a C pot for the rate. With a 500kB, it really sucks ;)
Any word on what a 1MC would be like? I have a couple of those in my stocks...Would this offer faster sweeps, or just even more slow ones?
I saw someone mentioned using a 250kC, but I couldnt get one (only a 200kC, and a 500kC, both in the mail now)

A 1Mc pot should work okay for the speed control. I don't think it will affect the max speed, but will enable slower min speed. If it's too slow for you, just put a 1M resistor in parallel to drop the overall value of the 1Mc pot to 500K.

Also, if you like the slower speed, keep in mind that blinking LED could remain dark for around 15 to 20 seconds each cycle.

Nice looking build. 8)

~ Charlie
« Last Edit: July 25, 2012, 02:20:36 PM by moosapotamus »
moosapotamus.net
"I tend to like anything that I think sounds good."

LaceSensor

Re: A/DA Flanger does TZF?
« Reply #753 on: July 25, 2012, 02:25:31 PM »
Strangely, my LED never goes completely out, so its cool.

Thanks for the tip on the 1MC
Think I might as well just wait for the proper one to come in the mail tho :)

Ry

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Re: A/DA Flanger does TZF?
« Reply #754 on: January 13, 2021, 11:45:46 AM »
Zombie Thread Revival!  I finally finished this build...14 years later.  It sounds great!  I was thrilled to find all the information I needed still here.

It only took a pandemic and lots of time on my hands to get around to it, but I completed this and 49 other builds in 2020...