Dsg d  n q  Phil Townshend 2005&i page &p of &nArialdo z @ E?"@y Lz" ``1K pp z") 100K p @8 "0M1N4148(#p(#4(#"0[h1N4148(#0W@8(#Xz4`T(#">b)B~`)@)@@~"">b  ` @ z""bb)B~ b)`)`@~""bb   b ` z""bb>~B~ b@~`@~"y"_v`10@ `T= `T< w= @ y" 10@ `T= `T< w= @ z"!8 b`10K  H? H?z"!810K  H? H?",,,,,z"y"@b10   @ h. h.",>@b\`\@@,@@y"",,>@b\,@@,`\z"# buA741NpbNpbNNN",>b{)`{)@_@_@,@#" >@#"8H" B@z"" ,,#" >~b@~`#" >B>~ @@~@@ "8H8wH">b>~B~@@~`@~"d @! {\rtf1\ansi\deff0\deftab254{\fonttbl{\f0\fnil\fcharset0 Arial;}}{\pard\ql \x\fs24\b\ul FUZZ AMPLIFIER\par \ql \x\fs20\ul \par \ql \x\fs20 This is a classic design using an inverting amplifier with di\x\fs20 odes in the feedback loop. It is intended to run between pre-\x\fs20 amps and power amplifiers and has an overall gain of around 1\x\fs20 to 1.5.The input should be a standard 450mV. Any more and th\x\fs20 e clipping will be more severe even at minimum gain\par \ql \x\fs20 .\par \ql \x\fs20 A potential divider creates a phantom 0v rail for the non-inv\x\fs20 erting input to the op-amps. This eliminates the need for a s\x\fs20 plit power supply.The overall current consumption is very low\x\fs20 , around 3mA so will run from a PP3 battery for some time.\par \ql \x\fs20 \par \ql \x\fs20 VR1controls the gain of the amplifier which varies from 1 to \x\fs20 100. At minimum gain the signal for the most part remains una\x\fs20 ffected. As the gain is increased more of the signal will be \x\fs20 clipped but the output should not rise above 1.5v peak to pea\x\fs20 k. \par \ql \x\fs20 SW2 switches the unit in and out as required.This can be a fo\x\fs20 ot switch or something similar.\par \ql \x\fs20 } }"8H">B @ @e" `Yp @ @ @ @ @ "B! @!y"",,B!, ,@!z""))$B!) $)@!#">,>!B!,@!@@!e""8H8H(g"Q)f"QД9",,>),@,)z""%38H",>B,@@y"@b`47   @ h. h."%38H("%3",,B@,,@@"%389HG"^b ` `"^b>~ `@~` "Xh" Xh"^`y"" Xh8wHy"e"g @~ @ @ @ @ @ "P`POWER4:0*m.*m0*m"~>B@@"y""j>B@j@f""" |8H"BY-PASS.*p.*0*.*0*">_@_y""">!B!@!@!g""h @INPUT h $ G G G"ޥB@""ޥB!@!"" >!B!@!@!" 8H("`/`CLIPPING100K1.00iد "!>b@`y"" 8H"">‘@@@_@_""|8H("#B>!B!@!@@!e""``OUTPUT@82$2G2G2G"$>@x@@x"""%)xB!)@!`\@!`\x"""08H("&,)>!B!)@!,@!@ @MbP?"@