Dsg d  n q  &f&i page &p of &nArialdo z @ E?"@y d"H A(9 (# PF PF#K`@ppжz"{ @4.7K 6BV H? H?z"{ H 4.7K 6BV H? H?"ކ~z"z"x" e 5100n   @ h. h."ކb` `x""^/"/ ` #"Xhz("^/H"` `H/H#" "ކ//z"#"ކ^`z"x""x"^b ` ``d""ކ/KK/z""/b/K`#" ^b``#"Xh" ކ>~b`@~x""|(6" B///@/"pCЗ@5Power-*`'-*J0*m-*m0*m" B/@/ / "d"z"u` `820 6BK  H? H?"]H"(iActive (# PF PF PF" "^b` `""|Xh"ކ^b``"~"HHH H#z"y"/10  h. h."> //@/ /"8H(6">B/b@/@`# @~'` J]vFJ@_HH vIJHK jyvI`{K IK"0@pPFpPFpPFkPFpPF"F@~p@PQ Ip Ip Ip Ip Ip"0`pppkp" b` `""z(Xh"FHH HFHz"""z(AO"'@_p@PQpppppd"H 9 (# PF PF jV " YpPFpPFpPFkPFpPF"jppppp" V pppkp" Ip Ip Ip Ip Ip"b~: o : o `o d"z"@`1K pp  ʇ   k 6#m@! ʇ֧ 6#@!" FP BC549B ; ; 8^ 8^ `"89x R1N4148(#0W%#0W(#Xz%#Xz(#"(n h 1N41480W@80W(#`T0WPF"KK K K z"""|HH 1N4148(#0W`T(#XzT0p(#" DR(x"{ 470n V^Z h. h.z"`@  33K 6BM  H? H?"~"  ""^Ko o `o Ko " Xhh v "^bގ o `o ` ""Bގ  @ @  x""ގ    z""Ko o Ko o " DRh v "KK7 o Ko K7 "">BS o @S @o x"z"e@`1K p "   z":@Q 1K  H? H?" O( Detected@g (# PF PF PFz" `@Nd220 ppm ",,~x,,x"" EF~xFFxz""!EF^=YF`=FYz""",H^=Y,`=,YHY"z""#EF~: o F: Fo ""$S o o S z"x"@@100n vzz h. h."%~^=Y`=Yx"#xr ppжz"Tj  2.2K 6BV  H? H?z" Tj@ :  15K  H? H?"&>_^ ` `  @_ #"'>_B_~x@_@_xz"y"=@ & 10   @ h. h."(>_B_^=@_`=@_z"")>_B_r @_ @_r z" "*>_ޭ"@_  #"+~~xxx"",EB_o o Fo @_o y""-$"$ގ o  $ $o #"`H P Alarm@eh".b=^  ` @!` @! `= #""/b=> o `=@ @!@ @!o o "y"@  2H10   @ h. h."0^\~x`\xxy""1^\b\~x`\x`\#"2o o y""pCg ~Power 0*m-*m0*m"3~x‘xx"d""؞(XU1N4001(#0WHK(#Xzh(#"4  /g / K gy"" (6"5 /B //@""6  b  , `y"" Xh"7 ^b ` `""Xhxq"8^b~xY`x`Y""d ,@l{\rtf1\ansi\deff0\deftab254{\fonttbl{\f0\fnil\fcharset0 Arial;}}{\pard\ql \x\fs20 AM\par \ql \x\fs20 TX} }d@N: l{\rtf1\ansi\deff0\deftab254{\fonttbl{\f0\fnil\fcharset0 Arial;}}{\pard\ql \x\fs20 AM\par \ql \x\fs20 RX} }"9j//j//""(6":ކ////d2 {\rtf1\ansi\deff0\deftab254{\fonttbl{\f0\fnil\fcharset0 Arial;}}{\pard\ql \x\fs22\b TRANSMITTER\par \ql \x\fs20 This generates a frequency of 1KHz from the 555 astable and t\x\fs20 ransmits it using the AM transmitter.} }d C-{\rtf1\ansi\deff0\deftab254{\fonttbl{\f0\fnil\fcharset0 Arial;}}{\pard\ql \x\fs22\b RECEIVER\par \ql \x\fs20 When the carrier signal is detected, D5 lights and disables t\x\fs20 he 555 astable. When the signal is lost, the LED goes out and\x\fs20 the astable produces a pulsed tone of about 4Hz.} }d`{\rtf1\ansi\deff0\deftab254{\fonttbl{\f0\fnil\fcharset0 Arial;}}{\pard\qc \x\fs24\b\ul DOG WARDEN\par \qc \x\fs24\b\ul \par \ql \x\fs20 This circuit transmits a carrier wave from the transmitter located on the dogs collar. Whenthe receiver is in range, the LED (D5) is lit. When the dog moves out of range, the receiver produces a pulsed tone. Aerials can be as short as 10cm with 438MHz transmitters and still give a range of about 50-70 metres. The RF modules used are made by RF solutions and are available from Rapid Electronics.} }d` {\rtf1\ansi\deff0\deftab254{\fonttbl{\f0\fnil\fcharset0 Arial;}}{\pard\ql \x\fs16 Designed by Phil Townshend\par \ql \x\fs16 EDUTEK LTD.\par \ql \x\fs16 www.edutek.ltd.uk} }" (";," , z"" ؇ " h v "8Hh v "<Bo o @o o "=~"  "z"">Mh v ">>Fo o Fo @o "%3xq"?^,~xx,x`x"">MxR`"@F~YYFYYz"">Mxq"A,F~xxFx,x"BE~xxFxx"CEF~Y‘FYF""xxR`"DE~YYYFY"xxq"E~"$~YY $Y $#"F~B_~xxx@_x"8XHfxq"G>_b\~xx@_x`\x"8XHfئ"H>_B_ޭ@_@_z" "8XHfh v "8XHf؇ "I>_B_ގ " @_ @_ y""XUhcxq"(+h v "J>_"$o o  $o @_o y"" h v "K$o o o $o @ @?"@