Author Topic: Fuzz line  (Read 539 times)

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DDD

Fuzz line
« on: January 18, 2018, 12:33:38 AM »
                                Fuzz line (based on the traditional 2-transistor fuzz circuit)
A line of simple fuzz circuits with various transistor types.
No ready devices, no real sound samples, just projects.
Some more details and discussions are in the links below (in Russian).

1)   A Not So Simple Fuzz
http://forum.guitartonelab.ru/cgi-bin/yabb2/YaBB.pl?num=1514646137


2)   A Low Z FET FUZZ
http://forum.guitartonelab.ru/cgi-bin/yabb2/YaBB.pl?num=1515605992


3)   FET FUZZ - one more fuzz
http://forum.guitartonelab.ru/cgi-bin/yabb2/YaBB.pl?num=1515433618


4)   A BJT-FET FUZZ
http://forum.guitartonelab.ru/cgi-bin/yabb2/YaBB.pl?num=1515783532


5)   A BONUS BJT-MOSFET FUZZ (Low Gain)
http://forum.guitartonelab.ru/cgi-bin/yabb2/YaBB.pl?num=1515853650


5a) A BONUS BJT-MOSFET FUZZ (High Gain)
http://forum.guitartonelab.ru/cgi-bin/yabb2/YaBB.pl?num=1515853650


« Last Edit: January 18, 2018, 12:58:46 AM by DDD »
Too old to rock'n'roll, too young to die

blackieNYC

Re: Fuzz line
« Reply #1 on: January 18, 2018, 05:22:52 AM »
Great!  Thanks so much for these.
At a glance, those transistors seem unfamiliar to me, novice that I am. And surface mount might be all that's available. In the US anyway.  Maybe someone knows of TO92 substitutes to recommend?
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DDD

Re: Fuzz line
« Reply #2 on: January 18, 2018, 05:48:03 AM »
"...TO92 substitutes to recommend..."

BC849C, BC850C = BC546...BC550 (A...С), maybe BC107...BC109    Usual small-signal npn trannies, beta from 100 to 600
MMBF170 = BS170, 2N7000
BF512 = J110, 2N5457, 2N5458   Small-Signal N-channel JFET, Ucutoff=1,6...3,0 Volts

« Last Edit: January 19, 2018, 02:02:37 AM by DDD »
Too old to rock'n'roll, too young to die

DDD

Re: Fuzz line
« Reply #3 on: January 29, 2018, 05:00:03 AM »
6) Der Schmuzzi Fuzzi (Sweety Smoothie Fuzz-Shmuzz)
Two-stage hi-gain ampifier with switchable "resonant peak" and wide range gain control (33dB).
http://forum.guitartonelab.ru/cgi-bin/yabb2/YaBB.pl?num=1517064964

Schematic:


Frequency Response:

« Last Edit: January 29, 2018, 07:10:03 AM by DDD »
Too old to rock'n'roll, too young to die

DDD

Re: Fuzz line
« Reply #4 on: January 31, 2018, 09:57:26 PM »
Some mods for 6) are available on February 1st, 2018. Please see the above mentioned link.


« Last Edit: January 31, 2018, 10:00:18 PM by DDD »
Too old to rock'n'roll, too young to die

DDD

Re: Fuzz line
« Reply #5 on: February 09, 2018, 07:06:10 AM »
7) 3TM1 Fuzz (3-Transistor Mod 1)
High gain fuzz/distortion box with enhanced gain control feature: control range is from 17dB to 73dB just with single pot (totally 56dB).
It has "fuzz-traditional" common emitter BJT stage cascaded with "overdrive-traditional" SRPP FET stage.
Power consumption is as low as 0.34mA.
The fuzz works with 7VDC to 12VDC power supply without any noticeable changes of signal form.
Very low elements count is a bonus.

For more details please visit    http://forum.guitartonelab.ru/cgi-bin/yabb2/YaBB.pl?num=1517941130

Schematic


Gain Control curves

« Last Edit: February 09, 2018, 07:25:32 AM by DDD »
Too old to rock'n'roll, too young to die

DDD

Re: Fuzz line
« Reply #6 on: February 10, 2018, 01:27:03 PM »
8 ).   3TM2 Fuzz (3-Transistor Mod 2)
Simplified but enhanced version of the previous fuzz.
Flexible frequency response control, more gain control, less component count.
At the same time, higher quiescent current (0.63mA vs 0.34mA previously).
More details and graphs are at   http://forum.guitartonelab.ru/cgi-bin/yabb2/YaBB.pl?num=1517941130



« Last Edit: February 10, 2018, 01:30:45 PM by DDD »
Too old to rock'n'roll, too young to die

DDD

Re: Fuzz line
« Reply #7 on: February 14, 2018, 05:19:56 AM »
9) 3TM3 fuzz, final version.
Reduced current drain - 0.53mA including LEDs.
BMPi-style tone control and output buffer.
Switch 1 - stomp switch 3-rd contact or PNP-transistor of the Millenium Bypass circuit.
More details are at      http://forum.guitartonelab.ru/cgi-bin/yabb2/YaBB.pl?num=1517941130


Too old to rock'n'roll, too young to die

Kipper4

Re: Fuzz line
« Reply #8 on: February 14, 2018, 09:49:18 AM »
Thanks for sharing.
Jellybean dodging since 2012.
Smoke me a Kipper. I'll be back for breakfast.