發光二極體驅逐艦(霹靂遊俠燈)電路

發光二極體驅逐艦(霹靂遊俠燈)電路
發光二極體驅逐艦(霹靂遊俠燈)電路-LEDChaser(KnightRiderlights)Idon'tknowwhy,butpeoplelikeblinkinglights.YouseeLEDchaserseverywhere,inTVshows(KnightRider),movies,andstorewindows.Thisschematicismyversionofasimple10LEDchaser.Thereisno555timerusedbecauseatmylocalelectronicsstoretheyareover$4Cdn.Instead,anoscillatormadeupoftwosectionsofa4011NANDgateisemployed.Thischipisveryinexpensiveandextremelycommon.Schematic
Parts:PartTotalQty.DescriptionSubstitutionsR111Meg1/4WResistorR21100KPotR311K1/4WResistor220OhmifusingblueLEDsC110.1uF16VCeramicDiskCapacitorU114011CMOSNANDGateU214017CMOSCounterLED1-1010LEDsOfAnyColourMISC1Board,SocketsForICs,KnobForR2Notes:1.UseR2toadjustthe"chaserate".2.YoumayneedtousealowervalueresistorifyouwishtouseblueLEDs.Try220Ohm.3.YoucanalsouseincandescentlampsinsteadofLEDs.Usetransistorstodrivethembyconnectingthebaseofthetransistorstoeachoftheoutputsofthe4017througha1Kresistor.Connectoneendofthelamptothepositivesupply.Thenconnecttheotherendtothecollectorofthetransistor.Theemitterthengoestoground.Dependingonthelamps,youmayneedpowertransistorsthatareheatsinked.4.C1maybereplacedwithalargervalueforaslower"chaserate".5.Ifyouhaveproblemswithweirdcircuitbehavior,tryreplacingR1witha33Kresistor,andincreasingC1to1uF.6.Ifyouplantousethiscircuitinyourcar,bewarnedthatinsomeareasitisillegaltohavered,blueoryellowflashinglightsunlessyouareanemergencyvehicle.