Search found 375 matches

by FiveseveN
24 Aug 2012, 15:44
Forum: Circuit Blocks
Topic: Buffer theory/Knowledge show-off/Why IS that?
Replies: 3
Views: 3954

Re: Buffer theory/Knowledge show-off/Why IS that?

To elaborate on the strange title: So why are there SO MANY different layouts and topologies used in stompboxes? Technology has changed over the years. People in the 70's and 80's had different options than we do now, and some kept on applying what was appropriate then . BJT buffers have limitation...
by FiveseveN
19 Jul 2012, 00:06
Forum: Power
Topic: Diode and capacitor in voltage protection circuit
Replies: 9
Views: 6414

Re: Diode and capacitor in voltage protection circuit

http://en.wikipedia.org/wiki/Decoupling_capacitor
There's a duplicate thread on the other forum and another tangent discussion that provides more concise answers.
by FiveseveN
18 Jul 2012, 21:45
Forum: Power
Topic: Diode and capacitor in voltage protection circuit
Replies: 9
Views: 6414

Re: Diode and capacitor in voltage protection circuit

More like decoupling rather then filtering.
by FiveseveN
03 Jul 2012, 19:39
Forum: Davidoff Library
Topic: Amp factory videos
Replies: 19
Views: 15698

Re: Amp factory videos

Nah, I seem to remember a more general tour/interview, though it was of the same shack for sure. Or maybe I just imagined it.
Anyway, they seem pretty candid about their knowledge and means, so I guess it wouldn't be fair to make fun of them.
by FiveseveN
03 Jul 2012, 01:08
Forum: Davidoff Library
Topic: Amp factory videos
Replies: 19
Views: 15698

Re: Amp factory videos

TC Electronic:



Not strictly amp builders, but I got a kick out of all the in-house testing. I was going to suggest watching the Death By Audio tour for a laugh, but it's no longer on the YouTubes. :mrgreen:
by FiveseveN
29 Jun 2012, 21:21
Forum: Modern Stompbox Effects (1975 - ...)
Topic: EHX - Crying Tone Pedal [schematic]
Replies: 29
Views: 11934

Re: EHX Crying Tone [schematic]

Moving tab or bouncing light or capacitative or Hall effect sensor or even piezo or strain-gauge-based, or an accelerometer in the treadle. Hell, if you're feeling particularly fancy you can use a high-precision laser, radio or ultrasound rangefinder. Also, a two-axis pedal would be easier to implem...
by FiveseveN
29 Jun 2012, 19:36
Forum: Modern Stompbox Effects (1975 - ...)
Topic: EHX - Crying Tone Pedal [schematic]
Replies: 29
Views: 11934

Re: EHX Crying Tone [schematic]

Or just use one of the other dozen methods of sensing rotation/displacement of a rocker pedal (or foot, for that matter) that doesn't depend on the fragile mechanical link to a pot.
by FiveseveN
29 Jun 2012, 11:05
Forum: Modern Stompbox Effects (1975 - ...)
Topic: EHX - Crying Tone Pedal [schematic]
Replies: 29
Views: 11934

Re: EHX Crying Tone [schematic]

I guess the sensor based on LED and its approximation to a surface The LEDS are on the wrong side. They're for lighting up the logo on top . While the accelerometer design could be implemented entirely in the analog domain, I think it's easier (at least the calibration bit) with a uC, which might b...
by FiveseveN
22 Jun 2012, 22:14
Forum: Electric Guitar/Bass Wiring
Topic: So... tone capacitors, truth or myth?
Replies: 64
Views: 31172

Re: So... tone capacitors, truth or myth?

marshmellow wrote:The resulting distortion due to different capacitor types is easily measurable.
Sure, the measurement is easy enough. But are the results significant? Are there any tests in the 9V/mA or 2V/uA (in the case of tone caps) range? I've seen this one mentioned a bunch of times, but how relevant is it?
by FiveseveN
19 Jun 2012, 15:16
Forum: Electric Guitar/Bass Wiring
Topic: So... tone capacitors, truth or myth?
Replies: 64
Views: 31172

Re: So... tone capacitors, truth or myth?

Isn't this the third cap-mojo-related thread this week? Must be the heat.
by FiveseveN
20 Apr 2012, 15:41
Forum: Parts & Tools Sourcing & Trading
Topic: Footswitch
Replies: 13
Views: 5165

Re: Footswitch

night-butterfly wrote:the Lehle DC filter
You mean... a coupling capacitor?
by FiveseveN
14 Apr 2012, 15:32
Forum: Circuit Blocks
Topic: overdrive vs. fuzz
Replies: 6
Views: 12415

Re: overdrive vs. fuzz

Unfortunately the answer is not at all "technical", not from an electronics standpoint. The question has been asked and answered many times so I'll give you the gist of it: the difference is subjective but we can identify some general patterns relating to the amount of saturation and susta...
by FiveseveN
10 Apr 2012, 03:35
Forum: Modern Stompbox Effects (1975 - ...)
Topic: Boss - HM-2 Heavy Metal [schematic]
Replies: 312
Views: 236975

Re: Boss - HM-2 ( Heavy Metal ) [schematic]

It will be BLACK
Don't you dare do that! :lol: That transparent BOSS enclosure looks stunning! Where do you get them from?
by FiveseveN
09 Apr 2012, 02:41
Forum: Capacitors
Topic: The 'Sound' of Capacitors..
Replies: 695
Views: 327862

Re: The 'Sound' of Capacitors..

@artifus: Oh, I see now. More on this later. @telecaster: You have missed my point completely . In my foray into the minds and culture of modern musicians I have identified the source of our woes, of the confusion and woo-woo that leads to bickering such as we find in this unreasonably long thread (...
by FiveseveN
08 Apr 2012, 23:18
Forum: Capacitors
Topic: The 'Sound' of Capacitors..
Replies: 695
Views: 327862

Re: The 'Sound' of Capacitors..

I for one don't understand your point. Yes, how about that? Are you trying to remind us that we are slaves to our own perception, that there is nothing outside the subjective? 'Cause that's just fine, but just say so. I'm sorry, I've been watching a debate with Deepak Chopra and I'm particularly sen...
by FiveseveN
07 Apr 2012, 09:24
Forum: Capacitors
Topic: The 'Sound' of Capacitors..
Replies: 695
Views: 327862

Re: The 'Sound' of Capacitors..

I don't know what you just said One does risk becoming cryptic when trying to be thorough yet concise. So let me offer an example: We use a large electrolytic coupling cap with some huge equivalent series inductance such that its impedance "inverts" within the audio band, say at 5 KHz. Th...
by FiveseveN
07 Apr 2012, 04:19
Forum: Capacitors
Topic: The 'Sound' of Capacitors..
Replies: 695
Views: 327862

Re: The 'Sound' of Capacitors..

Where its parasitic properties or shortcomings are significant for the application, which is also conditioned by whether these effects are masked or distorted so as to lose their significance.
Would you agree?
by FiveseveN
06 Apr 2012, 17:36
Forum: Capacitors
Topic: The 'Sound' of Capacitors..
Replies: 695
Views: 327862

Re: The 'Sound' of Capacitors..

It's a bit like teaching ophthalmology and pigment chemistry in fingerpainting class, isn't it?
by FiveseveN
06 Apr 2012, 15:51
Forum: Capacitors
Topic: The 'Sound' of Capacitors..
Replies: 695
Views: 327862

Re: The 'Sound' of Capacitors..

How would a blind man go about doing this? :popcorn: The same way a deaf person would go about listening to it. How many blind EEs have you met recently? And yes, I do mean engineers , not musicians , for the same reason the FDA employs doctors, chemists and other scientists and not chefs and food ...
by FiveseveN
25 Mar 2012, 16:33
Forum: Printed/Published Online Designs
Topic: if i build this, am i gonna kill myself?
Replies: 21
Views: 7702

Re: if i build this, am i gonna kill myself?

No, it's reverse-biased during normal operation.