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  _vx  _vx   _ax   _delta 
  _ffx 
  _vy  _vy   _ay   _delta 
  _ffy   _vxscale  _vxscale 
  _axscale   _delta 
  _ffxscale   _vyscale  _vyscale 
  _ayscale   _delta 
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  _ffalpha   _vx  *              "  _vx   _delta 
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  _vxscale  /       @     @"
  _vxscale   _delta 
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  _vyscale  /      @@    @@"
  _vyscale   _delta 
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<\ yGȈ6=pO~o;	j=\0Va+y+?/k yGȈ6=pO~o;	j=\0Vg}y-Aj yGȈ6=pO~o;	j=\0Vzdڅ[Vx-;f yGȈ6=pO~o;	j=\0VU#g]PG[Fa yGø@JO yGXŸ^KlP4Z yG=gb+zVո=KlN٧  yG(bh0+*ao3.Ѩ` @xŮ:}"-{*ЩJq22U$_( 例6!ئhN p_LL TO䘷\za
I,ef9}6*Y[ͽ;MVX i w.sO2\Gc\Fh[qϳVa֤GC%SwT hfT㇀`Fd#@gv	u Y9  dԎ BNaK.T5Of  )g* ɀ2&m:(i G}0aqi`  YLU6u l]=w[	]{X BNaK.T5Of  )g* ɀ2&m:(i G}0aqi`  YLU6u l]=;mP BNaK.T5Of  )g* ɀ2&m:(i G}0aqi`  YLU6u l]=G',EoJZǩmݻT BNaK.T5Of  )g* ɀ2&m:(i G}0aqi`  YLU6u l]=!> :,򛺠@c2<k3!F=.C@KqS&p BNaK.T5Of  )g* ɀ2&m:(i G}0aqi`  YLU6u l]==lBh?=z؅3 &	wz^ӾhڻG0ޗZ[iKL6Ѯ7Ri@)Vkـ"#5]ř{fpRݨ՛QNv+L 0Clg3QǀM:gm>Ժ`RPlX@#*uFm@0$`%Tm	]qbcj鉫+%cmP cz;oc%@q	[ ITzXO\R8n%ۨso!MtW*4 ט %KQYq; cz;oc%@q	[ ITzXO\R8n%ۨso!MtW*4 ט %KQY[E cz;oc%@q	[ ITzXO\R8n%ۨso!MtW*4 ט %KQYjv"-[mԶݪp cz;oc%@q	[ ITzXO\R8n%ۨso!MtW*4 ט %KQY[{y޶!v]=lB Lܴ..9[gBCj,Eq_ưsx+A1q3ءh ,rNR=Ķ3q!2 ,C-)ĔM@2iA.p1nπlO#Q}. Uߔ$Knߛ@]6 +@reєWf;Y t U <4n^*2QDҲ+g$-+%ҲkY '~\UvcHz!$ #xFf2r&qDR\ʺ49 ,:@Kfiй@ GtL1rw1%RR޿uJ[Y7e9kk]Iu@/& /ҘMf/I	o%Q	*?ARki@(H$^T Q%Q-V[b~^ GtL1rw1%RR޿uJ[Y7e9kk]Iu@/& /ҘMf/I	o%Q	*?ARki@(H$^T Q%QM[by GtL1rw1%RR޿uJ[Y7e9kk]Iu@/& /ҘMf/I	o%Q	*?ARki@(H$^T Q%;[Җ6[bwn8 GtL1rw1%RR޿uJ[Y7e9kk]Iu@/& /ҘMf/I	o%Q	*?ARki@(H$^T Q%ZH2KD0ĩG#ϰ/wː;drATɩ<. GtL1rw1%RR޿uJ[Y7e9kk]Iu@/& /ҘMf/I	o%Q	*?ARki@(H$^T Q%uR-[FY[{y޶!v GtL1rw1%RR޿uJ[Y7e9kk]Iu@/& /ҘMf/I	o%Q	*?ARki@(H$^T Q%@X9S @%8p@(v\, y%ɌVQ*$ab@Hi!t_riIp& mx))A:@T  z)>;a Os qsR>Mf6ܠ")8Y3W$ͻٺ	m :]vL'z{1 >zőz3graـ+^38a(qKPiD^H;T`B0 iH/*	nan LqތMzc58`sbKLTIg1%F:j/ pb=:ծ	k~[>k KFT@grSJ)m%V?IcEX)Lt#:T %8`9@*~l2t? h)B!YI' Tk		$*)S 	@f9< lNʁSke.)scZ.!tq
Eo %'@ h)B!YI' Tk		$*)S 	@f9< lNʁSke.)scZ.!tq
=L%(7m@ h)B!YI' Tk		$*)S 	@f9< lNʁSke.)scZ.!tq
]PP+jCo'vӀh)B!YI' Tk		$*)S 	@f9< lNʁSke.)scZ.!tq
"{jEbh0 bbܸs%@KlOڀbbܸs)^KlP4Zbbܸsjgb+zRո=KlNڧ bbܸsEbh0+&4ao3.Ѩ` eb̥˷S	L& 81O<@IbgUv0R-L3O ƟC7ur{mpؗ]uShJ^2Dրȳk"#JҞ>@&*l$JRP bj|egQfVbdbiS% `>[pS^yc&F Z5-z?ܸsCQ & C8#`y%!r] 'v`#*5'#pC&v BA	pZ^\_& 6,e$Tײ-pltE)+J M-D[	m{P #pC&v BA	pZ^\_& 6,e$Tײ-pltE)+J ME7;mP #pC&v BA	pZ^\_& 6,e$Tײ-pltE)+J MGT6,EoJZǩmݻT #pC&v BA	pZ^\_& 6,e$Tײ-pltE)+J M7hu :-@c<k3!>c;.C@KqS& #pC&v BA	pZ^\_& 6,e$Tײ-pltE)+J MHlBg
l=z؅5 G+ݺn#wQ0T Dݺn#wQ0 g\kpn<5.rm=*~`e0qT2t9NmKn0:M: `%^69Sc-RрO
x b^{^@BDQl	.dOLOD-6Ei3xPh}
 _ mKj3 rqVI+y-?/j b^{^@BDQl	.dOLOD-6Ei3xPh}
 _ mKj3 rqVi(g}y-Aj b^{^@BDQl	.dOLOD-6Ei3xPh}
 _ mKj3 rqVj*څ[Vx-;f b^{^@BDQl	.dOLOD-6Ei3xPh}
 _ mKj3 rqVCig]P-[FaaZBD"``"+iw⻉z#ͮ;.K| Y&B */h+/Sq3ؠi bYr@&T 2:pCRcVdip>*)p2")se 9ORT`r%-@Dǆ\* ewkv  aZBD"``"+iw⻉z#ͮ;.K| Y&B */h+ao;.ј`Vlg]P iґݼ\C^o2|emi0k	 peEc*e	] ^jUL,#\
`JЀ%`Ri1ba+9@/ ږݘ%bwfQ Q nx)<SȖ ( kݐ4P턶S),Ұ@Mj,|xMŎy0yĖ"2 Jr$,ʶ2tx (Ԃ4t#.lu@KPown7K.a('x$ _U|](pK e $zC0 $ % J(rTݽ{sUtKg>\hxs!῀N ǳ#ﷁ2IpdX@2)`e IU	f6"">`4Yd[j 	91f]mXvkKn^[{I@!{_z/)%	l  wTQUz=>2.304Ƅy5	i>KI QCfDxzVJ@;/l	@0ufemXvlKn^[{I@Lܴ..9[gBCj,Eq_ưsx+'ao;.ј`Vcg]P 1Ŧx*P܈CoSYڝV{ Kimai: ȁ+?#"[F$8m+ '[6S;o/[v=  DT%/ˬE9!|z &C B-X I(/1͆;<z^`F[䣀h쌭#lK&d"v,EoJZǩmݻT bz :-@c<k3!>c;.C@KqS& ?_f_l\`  	_f_ 6Zy   HܷVp^btHrJvYƊ b;zd)Lhu<)Mb_o@$q#n=2ʮ v_J=r* h"w.E-ט]#ol+.ҝVl!oR#"n[GL+8[1nG$9nV];,BE c
;zd)Lhu<)Mb_oAY{SuiͦSp:T	씦Uv/n $+q#n=2ʮ v_J=r*&{GoClze3i\ 'z)U]ۨ LRv{[]M L)=^xF1!"֛}JqWN K-ڋ%	aRZ@C5ueYQ	^VU> '˯qƋܹoAS#{-ۨ+bqƋܹ@B4e0L?S۔If"$ A םnB	jY/\pp8Iqo v2>\&  kv%dg/&`wbwڟ;Lo(f:ir|)+LDJ 0::C<_6*zyI p$  R[̔|$Ր$an-%Vl0(-fܤ@#I1(3t KU~`yI pR	 %|HK@+XYK	v^L AΕ<亮  J>=jlCoXwc[̏ j>PmfX Oz p[)T.ov2P*R`&Y BLM|3|=Mysu>QЋ{
3D_ @2"Hy᫶ vnxݔ}^Kb-y3 H.Ap;<5FصW\*6Ő   ! " # $ % & ' ( ) * + , - . / 0 1 2 3 4 5 6 7 8 9 : ; < = > ? @ A B C D E F G H I J K L M N O P Q R S T U V W X Y Z [ \ ] ^ _ ` a b c d e f g h i j k l m n o p q r s t u v w x y z { | } ~                                                                                                      RS`ax}~          ! " & 0 9 :  "! " U:: UUVU::::::::::UUVVVrr:rUrrUUV:U:r:r:Urr:rrrr:Ur::: V     U:::::U{:VU62UUUN:UUv:VVVr Vr:::::::::::rrrrrrr2rrrrr:r: :r :UU:    ::g  UU:                                                                                                                                                                                                                                  	}    ?m    _load01B24A60  S  _load01B24A60     ..   _root   light    Oa  basecomment  This simple circuit could be used as a thermostat. What other uses could it have ? k  comment1  Variable resistor.This can be adjusted to control the temperature at which the circuit operates l  comment2  Thermistor.This has a high resistance when it is cool and a much lower resistance when it is hot   comment3  R1 and R2 act as a potential (voltage) divider.Providing a constant reference voltage (4.5V) to the inverting input. O  comment4  R3 is a protection resistor
It protects the LED from excess current f  comment5  An Operational Amplifier (Op-Amp)
In this circuit it is being used as a voltage comparator '  comment6  A Light Emiting Diode (LED)   _root   comm  _root   basecomment NO  /hot:2     /outvolts:2     /plusvolts:2      @ @       W
EN ( %@叀   a@  b  t| 33 |g!=&8r    6N@ }    6N@ >0 E    ]MQ6  33( -i` s5|<QOP  
; XNW       p   [J      % [KIj 	    Ab ^  p   Z       % ZK  
    L   	 mJUбz < 33- aD	)槼  OLvH, 0 	 d@ c֟`i	
 p 
  "`1 33       " text Text

 	h     ?X     _load  F   _load     .. 	  ..:comm  I    ..:comm  text    @ @   	       " 
 _text ?     _loadWrapper  C   _loadWrapper    	  ..:comm  I    ..:comm  text 	  ..:comm   text     text  ..:comm  @     @   &  A+(tbox ?m    FX @ t`i "oPLAWzlLE7
!2q`*imj<"SJc!E 'btIpsǪ@ 8 FH @ V5i75-v9iLNxME{ ?_    < @ cAÍ@72](N0Q7E (xq7Le\#8<!i@iacR .L˨	)M7 ?A    G @ @ e%yHkA_]YKΟ\qutibkfH ?U    <R @ .T`YLF"ZY<>$<@+.$HWOɂf8l`pE-O+ ?b    EjY @ ~( bb
jځ@sFsz}O_7k8g,tv'dv$6q.X{>5a&i 	2   d       F nߕC  n[eOMYR?l  sst,ELđ  "b'$ qN  *+@1L,	  i47d5R 
  m 0=5@  @]uDԬ W{B0Rcu 7A7C0uL 1uET߅  __OX}LY^	 V+{wqEQ䳀
  	 }U @  RNfE ?
Őu7R _	p{U4| 5l_17( %%t}K	 E"5~Q 
   V\W׀@  ǌn,Ftڑ %Dţ.'R  u,_wD5= Eċ_>`6  {hŵ%Ro	 6E4!F
 U.H絠@  ŷ}Q= 
T*ŵI%\R ǯ1@v` (M mŤw-R{ 	 )n}ES
 ХvH@  ŦU oQE  ܷܵuKf ) lSa §RS|;M9. aőI7\R 	 UUmD0
 Res- @  œ:bR-M ٢LYK 1 T؀@ krksYlSMLb ƩsT|AR	 	JCB
 A1[8@  SV,RYV g]g_}A!Lސ q@& 1.1/"nL ƒ;IfELR^ 	 ݽ̘u8
 !)m[+&@  ikJzR` *q*s,uLW _#5 _~/ŹK#[Sq |u>:NXR6	 5Mu-`
 .9Vѩ1Zc@  QŁ?Rj سl_"n2  u,_fL5 -pŨ+R} h745e4R 	 kS5
 <?)Y@  8Wŕo5IRu ZL_;2А !Mڑ cŕE5^Rȉ  U*arPQ޴ 	  - u@[b
 L&E򶆥V:@  NŨE+R  fٱD@^` ¾fgd3L ƮGW#ŀ?R  D"O Q 	  [ -rW؀
 ^O/'V @  fŹm#JS  k] AS7 l,ILB ƖKdjJR|  5kf8F	 Fh&_
 q8ƾ@U @  Y[#dnQLf -# -L GG8tcL1t ƀ@[SwVERT  (sEC	 `wMX
 ƆC[ƥU @  YSM 1@6  lMKѤ l'6:bR(  ?Pޯ%Ds0	 z6Kus0
 Ɲ1NƎฐU@  X1X3;MVΐ _0*u2Б ]uŮ(Rt Y1, oQ  	pzC@	 
#\+>
 ƵZyRWUl@  D'M [D_QPWe2b hnŜ1R G#}0Q  3M0	 ;`)[[.
 Ag ePXUJ @  3rl_?`57\ %	Lhڑ Ʒ[ň;R 8U*-Fk +eEX	 +=d-Z
 tRR։U,u@  :u_07А ±8L) ƟOs_FQRt *Ig5E6  W*5	 9*Y
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 .0x@  
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 *+xK@  ŕnʷRWUL ObEwSP <Ct ŕDʢ8cR'N  `Ūo*Rш 	 ڏT YM
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h ŜN/%hnRQ Ÿ#S  T_LY4(	 ڟ>uL*
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EN ( 3%@}p  : o!      8rp    ;  ~ 3     3   e  4    ]G  5   	     Y  7     7   e  8    ]G  9   	  !   Y  :     0    _root   comm  _root 
  comment3 NO      _root   comm  _root   basecomment NO 	<  " ; _button @   & < y@potdivider  = e'l)@ (    -=]j;Qy   > e'l)@ ( 3-=]j;Qy  Q   ? ]]٘   '? /jL4(Ѭ$&S 0	I\]e Bg3
M@I	$   	@  &A ? _text @    A UD~P  %J   B <G   $vN  C <G   $v2  D e0      5{vǝ    E  F =  ~  >  ~  @  S A  ׸ B  ߗT C   p D     0    _root   comm  _root 
  comment5 NO      _root   comm  _root   basecomment NO 	F  " E _button @   & F S opamp  G d47  (    % Ɏ  G xR  H \f
  (    %s z   H  I _  (    %@}   @   J ]MQ6  (    %i` g >j
+8x8PQ A Aw^` >@ K TY	 (    -S2	<  L U} (    %VK   M G`0 (    $vg  N MYUVU  (    %6WX 	O    2% M }  N  K @   	~   P   I   ?M$ I   Ff J    K   LW L T2  O    /@ O    *W  O    .@@    @   Q ]MQ6  (   %i` g >j
+8x8PQ A Aw^` >@ R TY	 (   -S2	<  S U} (   %VK   T E7` (   $v  U G`0 (   $vg  V MYUVU  (   %6WX 	W   T 2% U }  V  K @    X O)VU  (   % W,  Y O)~A  (   % ] 	   Z   I   5 Q    R   LW S T2  I +  W    /@ W    *W  W    .@	 X WH@
 Y X>@   	[   " P ledoff @   " Z ledon @   & [ `led  \ _  ( 3%@}   @   ] ]MQ6  ( 3%i` g >j
+8x8PQ A Aw^` >@ ^ TY	 ( 3-S2	<  _ U} ( 3%VK   ` G`0 ( 3$vg  a MYUVU  ( 3%6WX 	b   # 2% ` }  a  K @    c O)VU  ( 3% W,  d O)~A  ( 3% ] 	   e   \   5 ]    ^   LW _ T2  \ +  b    /@ b    *W  b    .@	 c WH@
 d X>@    f f|=D+     QWDv@ w   g   e    f     0    _root   comm  _root 
  comment6 NO      _root   comm  _root   basecomment NO 	h  " g _button @    i 6     ,E)BX 	j   i @    @    k 6  3,E)BX 	l   k @    @      m   j    i  @     l     0    _root   comm  _root 
  comment4 NO      _root   comm  _root   basecomment NO 	n  " m _button @   & n @`r3  o lQu
  (    %Z   o O@ +\0 p e&'  (    % İ  p Ä  q DCC (    -=.#K\,r+)j@J㲝<H  q ` q r \d4Y 	 33o @2s!-d  	s  &t r _text @   &  s   ?̎@txt2 t \d4Y 	 33o @2s,!-d  	u  &v t _text @   &! u   ?̎@Copy_of_txt2 v Ui 	 333o @2s  	w  &x v `_text @   &" w   ?̏MXYtct5 x M!p       ?  	y  &z x o_text @   &# y txt7 z M!p         	{  &| z o_text @   &$ { 2 txt8 | Ui 	    (o @Y   	}  &~ | `_text @   &% }   ?̏xtxt9 ~ Ui 	    (o @Y   	  & ~ `_text @   &&    ?̌+Vtxt10  LzC  	 ^S  C   	  &  C _text @   &'  ԁ@txt10  LzC  	 ^S  C   	  &  C _text @   &(  ԃ(@Copy_of_txt10   DCC ( -=.#K\,r+)j@J㲝<H )  c9 *  a 	R     ?B     _load  0   _load     ..   brightframe       @ @     L8d      3ǁd8' y     
           this    0A"  :2 !    /dim:1   	  /cold:1     /outvolts:2     /plusvolts:2     ?    Lis    < 33-,0)uVcb͋[0i4X`)vt   ?    Lis  < 33-,0)uVcb͋[0i4X`)vt  	         "  brightoff @ ?C    _root # descript  When it is hot the resistance of the thermistor is low.
The voltage across the variable resistor is now larger than the reference voltage 
(4.5 V).

The Op-Amp is saturated so the output voltage is equal to the positive supply voltage.

In this circuit this is 9V.

The LED is on O  /led:2    "  brighto  @   &+  K hot 	P     ?@     _load  .   _load     ..   darkframe       @ @   x     
           this    0A"  :2 !    /dim:1     /hot:1     /outvolts:1     /plusvolts:1     ?    Lis   < 33-,0)uVcb͋[0i4X`)vt  	         "  darkoff @ ?@    _root   descript  When it is cold the thermistor has a high resistance.

The voltage across the variable resistor is now smaller than the reference voltage (4.5V).
The Op-Amp is unsaturated, so the output voltage falls to the negative supply voltage

In this circuit, this is 0V

The LED is off O  /led:1    "  darko  @   &,  % cold   TK  (    %S!'    O)VU  (    % W, 	@        
       2      d@     TK  ( 3%S!'  	@         
 !    !  2     c d@     o  x      Sd ~                   0    _root   comm  _root 
  comment2 NO      _root   comm  _root   basecomment NO 	  &   _button @   &-  l thermistor   Np}   3 97qnN8` .    33NQA @  D$   3 F#rq8 	   &   d low @   &  ̀ 0   high @   &/  plusvolts   W82N f  \dr,   W82N  3 \dr, 	   &      off @   &       on @   &0  Ȁ @ @FPoutvolts @  & h `ledbut @   