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Messages - madbean

#5161
Open Discussion / Time Sucker
December 29, 2012, 04:13:03 PM
Why of why did I start playing you??

#5162
1n194s off the wiper of the feedback pot will clamp the feedback volume, although not all the way. I have this option on the new Zero Points, but it is not totally ideal. Lower forward voltage diodes will clamp it further, but choosing ones with too low of a Vf might cause some unwanted clipping under with lower feedback settings.

One thing you could try is some lower diodes like the BAT41 or GE an put a 50k pot in series to ground, wired as a variable resistor. Set your feedback pot to oscillate and play with the new pot until you get the right amount of clamping on the volume. Once you find the right spot, then substitute a fixed resistor for the pot.

On my old Rebote build I think I did something similar to this. I think I also had a cap either in series or parallel to the diodes so there was a bit of a swell on it. I don't really remember exactly how I did it, but it worked (I don't have the pedal any longer).

Or, if you want to get really fancy, use some kind of transistor based switch in conjunction with shorting the feedback pot via a momentary switch. I don't know exactly what this would look like. Maybe something like this. Here the switch connects to 9v, charges the cap and the resistance across Q1 goes down to nearly zero Ohms. So, this (nearly) shorts the two lugs of the FDBK pot together with C1 being the timing cap. I think. Anyway, R2 and R3 would be adjusted to taste.

Point being, this type of idea would give you some kind of control over the volume swell. I think. I should try this out.

#5163
Tech Help - Projects Page / Re: Mutron's rotary switch
December 29, 2012, 02:33:10 PM
Haven't ever used a tri-color LED but what Hangingmonkey described sounds right to me.
#5164
Open Discussion / Re: JHS Honeycomb Deluxe workalike?
December 28, 2012, 03:49:53 PM
Thanks, Ian!
#5165
No, the input cap does not have to be polarized. You can almost always sub non-polar caps for polarized ones. The trick with polarized caps is that the + side needs to go the highest voltage source. With non-polarized it doesn't matter.
#5166
I would actually switch out in the input cap. Reduce it to 1uF or 470n, even. It makes a huge difference, IMO.

I had a FF once that used a pot to blend between 100n and 3u3. At 3u3, it is really, really intense.
#5167
General Questions / Re: Strymon Timeline Tap Tempo
December 25, 2012, 03:07:49 PM
This is a great idea....I think I will make one for mine. I have just the right switch too!
#5168
Open Discussion / Re: Merry Xmas to You All!
December 25, 2012, 02:57:57 PM
Merry Christmas from Tennessee! Hope you all have a pleasant and relaxing day with your family and friends.



PS: My wife gave me a Hercules 3-guitar folding stand and a carrying case. I love it!

#5169
General Questions / Re: Egodriver 100R resistor
December 23, 2012, 06:11:05 PM
Series resistance with a power source produces a low pass filter in combination with the filter cap which helps reduce noise, especially in higher gain circuits.
#5170
Tech Help - Projects Page / Re: Mudbunny low volume
December 23, 2012, 05:12:01 PM
What transistors are you using and what version of the Mudbunny? The readings look way off.
#5171
Global Annoucements / Re: Store will close on 12.23
December 23, 2012, 04:23:44 AM
I will add one thing: you can pretty much expect an onslaught of projects coming in the next 2-3 months. It's going to be a DIY bloodbath. I've got so many things completed or near completion it's frightening  ;D
#5172
Global Annoucements / Re: Store will close on 12.23
December 23, 2012, 04:21:46 AM
Quote from: the3secondrule on December 23, 2012, 12:53:29 AM
Merry Merry all...

Hey Brian, just wondering what will be coming up next in terms of re-stocks and new projects? (not sure if I have missed this somewhere?)

Cheers,

J

Well, we are at the point where I cannot afford to re-stock everything and the new projects all at once, so I will be doing some now and some a couple weeks after that. I'll have more info on this soon. Right now, I kinda just wanna enjoy the holiday :) (But, I'm still working on getting things up to speed as soon as possible)
#5173
Hmm, weird. I'll take a look at that file.
#5174
Tech Help - Projects Page / Re: Issue with honneydripper
December 22, 2012, 08:07:18 PM
I'm sure we can track down the issue, but you need to provide more info before anyone can help debug.

From the "getting help" stickie:
(3) Steps that you have taken to try to resolve the issue
(4) List any substitutions you used for parts/values

Also, any voltages you can provide will help us make sure each IC is getting power and doing its thing.