ࡱ> q` ]bjbjqPqP 9:: 8,~(DZZZ?r?r?r1~3~3~3~3~3~3~$hW~?rp>?r?r?rW~ZZVl~ttt?rvpZZ1~t?r1~ttr}T(~Z P*rN}1~~0~~΂t΂~΂~ ?r?rt?r?r?r?r?rW~W~t^?r?r?r~?r?r?r?r Physics Lab: Switches and Motors Name: ______________________ Objective: By the end of this lab students will be able to describe in words and circuit diagrams how switches can control the motion of the wheels of the robot. They will also be able to build these circuits. Application to the Robot: 1. The diagram to the right is a simple circuit that can control one of the motors (wheels) of your robot. It contains one simple single pole, single throw switch which is either open or closed. How would the operation of the motor change if the connections to the battery were switched?  2. A more complicated switch is a single pole, double throw switch (spdt). The center prong is connected to a wire from the positive terminal of the battery and therefore has a positive potential. This switch can complete two different circuits. By flipping the toggle either way, the circuit can be completed.   3. This switch is called a double pole, double throw switch (dpdt). One way of using this switch is to operate two separate circuits at the same time.  SHAPE \* MERGEFORMAT   4. With a little thought and jumper wires, many different circuits can be achieved. In the drawing to the right, the battery is attached to the middle poles. If the switch is thrown to the right, what happens? ________________________ If the switch is thrown in the left, what happens? _________________________  In this drawing, the battery is attached to the ends and jumper wires are connected as shown. The motor is attached to the center poles. What happens when the toggle is thrown in different directions? Explain why. 5. There are many ways that these basic types of switches can be packaged. Your instructor will show you different kinds. Possibly useful figures      HYPERLINK "http://www.kpsec.freeuk.com/components/switch.htm" www.kpsec.freeuk.com/components/switch.htm This website shows many types of switches and their circuit symbols.     page  PAGE 1 M M M M M M M M _hi 2 3 5 6 N O z { q r t z { OPQSTV_`qddh90(hj)OJPJQJ#jhj)U_HmHnHsHtHjhj)OJPJQJU/jhj)OJPJQJU_HmHnHsHtHhfhj)OJPJQJhj)5OJPJQJhj)5>*OJPJQJ&jhj)OJPJQJUmHnHuhj)hX hj)5 hj)5>*hj)OJPJQJ']^_3 4 5 P Q t u v w x y z | }  0 ^  Lgdj) N^`Ngdj)1$7$8$H$  !1$7$8$H$>\  q s t u  gdj)gdj) Lgdj)u v w x y z 0 c Bvgdj)56NOPTWXYZ[\]^_bcjk !#$&')gdj)`acdefghikl±~q`qL`=`q5jhj)Uh:Chj)0JOJPJQJ'jh:Chj)OJPJQJU!jhsghj)OJPJQJUhsghj)OJPJQJ!jhsghj)OJPJQJU!jLnhsghj)OJPJQJU!jtHhsghj)OJPJQJU!j.hsghj)OJPJQJU!jY!hsghj)OJPJQJU!jhsghj)OJPJQJUhj)OJPJQJ!jhFehj)OJPJQJU!"$%'(*1289:;<\]hj)OJPJQJhX0JCJmHnHuhj)0JCJjhj)0JCJU hj)CJjhj)Uhj))*<=>?@ACDFGIJKLNOQRTUWXZ[\]gdj)  !30P/ =!"#$% ni˞uPNG  IHDR\PLTEuGuH:NuSx*XWu dc_G cEn( g4Ywsvo-YH R4u4tp뀤o u'PDun'gg(C:\GPQR O&G(RArM FIwLpEZS\IRFpApD] ̡BN}rM)sw{*qR3qR|o 2+"ey_1`TjofRfXE?W#lpz`x!+l=yPGU<OS>]4秞tVTtpHd,}%_?rf(]mV l]M0pTc=wfC87rk`lsoH+5ڐCw*`0:螷s<TM:}`]>˒R{w%Bx{F0dX99Dd,\bm9: X9$Pj;/q;mf0lݰUxl~8 ڳq#R%$g3%gh9glo ;]MQ6ɔNӇPup:9)Jd"|\3 Yf}ӆĀ,OV(ǮMgijWGӍBCac EY483ػ`DR}1njn cj~_%DDUQg?6QU}OٸF*%惒n:]lu(υ?ZrM}4^5ԚYq$p=nTGVfo!. u06J<` n7t=z %oU& F?zSְ߲gk`x_RrLh P 5e 5/cBy$ߺFCG@gu$UX"6~q=?&pS͐U]\MHd)}95z sC, NЏ6*bO"0Dа8p*Ԫꝴ]5/Dn6l2a*8-w \]E-X®,JF%^amq0b((P0@ôuo5WzI鋚,,$$UMW%Bg,/E_Mb~s^ |/g"7c]^M(3FSQ ^,>LA@ [GmmԁK1"U ѯMJC'd¥amm=t/5zY%8$9`XWrzgiM(lJqm,qBY-oҹ"S˚7W anHQ XEHd}uMYC淂Qi*g3nVP/ x&Y*(FklH1ϛc^(V! 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