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Messages - medicament

#1
General Questions / Re: Uproar Riot
August 25, 2012, 03:07:27 PM
Hi. i have some problem with this pedal. my pedal have big bass. After C7 i have good boost signal, with some distortion. But after tone control, pedal boost bass frequency. or cut hi frequency  How i can solve this problem?
#2
Build Reports / Re: Poindexter and more
August 24, 2012, 04:06:14 PM
Quote from: midwayfair on August 14, 2012, 11:46:50 PM
Quote from: medicament on August 14, 2012, 11:36:25 PM
Quote from: nzCdog on August 14, 2012, 08:05:52 PM
Fluorescent lights generate radio frequency noise which can interfere with high gain circuits like this one :)
Ok. Maybe some schematic modification can solve this problem?

Put a 22pF cap between the input and ground. Keep the leads as short as physically possible. Even a millimeter or two will keep it from working.
to solve this problem i choose other transistor Q5. 2n3904 have big noise figure = 4 (in datasheet). i choose bc557bg (this transistor have noise figure = 2).
With this transistor i cant hear radio and other noise. May be in perfect find similar transistor with good gain.
#3
Build Reports / Re: Poindexter and more
August 14, 2012, 11:36:25 PM
Quote from: nzCdog on August 14, 2012, 08:05:52 PM
Fluorescent lights generate radio frequency noise which can interfere with high gain circuits like this one :)
Ok. Maybe some schematic modification can solve this problem?
#4
Build Reports / Re: Poindexter and more
August 14, 2012, 11:25:04 AM
Quote from: madbean on January 29, 2012, 01:04:13 AM
Looking very good, DuctTape! That Poindexter is very susceptible to RF and other noise sources, for sure. I remember testing mine on the breadboard and getting massive noise, which then disappeared after turning off a single non-incandescent light.

And, love the light up knobs, too.

Hello. I have problem with RF noise.
What do you mean by "turning off a single non-incandescent light"?