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MakeYourOwn#HVC1Copyright1996-2003CAPACITORSHighVoltageCreativeScience&ResearchPOBOX557NewAlbany,IN.******@fuellesspower
CAPACITORSHIGHVOLTAGEMakeYourOwn#HVC1Copyright1996-2003InouraboveHVCapacitordesign,weusedaclearplasticmakeupcontainerthatwepurchasedfromalocalK-MartStoreinthewomen’〞x50footaluminumsheetingfromahardwarestore,〞x6〞-Msprayadhesive,whichmustsprayafinespray,〞x6〞,thisshouldholdupunder10,?〞plywoodto5〞x6〞thendrillyourboltholesusingthe+andnegativeplateasatemplate,Nowyouwillneedasmalldrillpress,〞x6〞aluminumplates,startoffdrillingtheonestakefirstandmarkeachoneas+.,,〞x6〞+plateonit,,sprayingonlyoneside,,pressfirmly,+-betweeneach+,,dothesamefortheright.+_10,000to25,000voltcapacitor10,000to25,000voltcapacitor
Asonewhosuppliespartstothosewhoexperimentwithhighvoltage,-pacitorataworkingvoltageofYYY?Myonlysourcewants$249forone."Sometimes,ahighpriceisjustified;othertimes,asellerhastheonlyca-pacitorsofaspecialvalueavailable,-Itisfeasibletobuildyourownca--by-steplogicalapproachthatwe’’llexplainhowtoplanandconstructacapacitor,wheretogetmaterials,safetyconsiderations,tipsandhints,andincludeafewsimpleprojects,ACapacitor’-,gel,liquid,’sabilitytostoreenergyismeasuredineithermicrofarads(uf),nanofarads(nF)orpicofarads(pF).Micromeansonemillionth,nanostandsforonebillionthandpicoforonetrillionth(faradsarealsoused,butinhighvoltageworktheyareimpracticallylargeunits).-tanceis;C=()(n-1)MAKEYOUROWNHIGH-VOLTAGECAPACITORSMAKEYOUROWNHIGH-VOLTAGECAPACITORSPage1FreeNews/HighVoltagecapacitors
-pendsontheinsulator(ordielectric)betweentheplates(calledthedi-electricconstant),Aistheareaofoneconductiveplateinsquareinches,distheseparationbetweenadjacentplatesininches,,(calledamil)ofthick--ingpropertyofthedielectric,thehigheritsresistance,andthelessdi-,highvoltagepowersupplies,minimizingallsourcesoflossisimpor-tanttopreventunduepower-,plasticsarebyfarthebestmaterialsforlargeca--,andPlexiglasinparticularareeasytoglue,andcanbecutwithatablesawusingaplas-ticsblade,oracarborundumimpreg-natedall-purposecuttingbladelikeZippity-Do(whichischeaper).Asabresawwithareallycoarsewoodbladewillalsowork(otherbladetypesclogorchip).Suchplasticsmaybedrilledwithhighqualitysteeldrillbitsorspe-cialplasticbitsJheymustbedrilledat300RPMorslowertopreventchip-pingandmelting,,Polyethylene,Nylon,andes--rialsistouseagluespecificallyde-(orjustPVC)ismoderatelyslipperyItcanbegluedwithaPVCcement,orfoilplatescanbeat-tachedusingsiliconeRTvGlassis,inprinciple,,,itisfragile,andmaycontainimpuritiesthatallowconductivepathsforde-,foryourfirstcapacitorortwo,wesuggestthatyoutryatypemadewithglasstogainexperience,sincetheygotogethereasilyandarecr)--,,,itcanbeusedinavarietyofsimplewaystomakeverygoodhighvoltagecapac-,adandyvariableDCcapacitorcanbemadebyimmers-ingajunkedAM-radiotuningcapaci-torofthemovable-platetypeinmineraloilsoitsshaftandconnectionleadscomeoutofthecontainer’,makeabso-lutelycertainthe"cold"platesofthecapacitor(themovingplates),large,non--to365-pFvariablecapacitorwitha1-kVDCbreakdownvoltage(/’.e./aplatespacingof1mm)becomesa270-to985-pFunitwith7500-VDCbreak--voltvariablecapacitorsometime,andyou’llseetheadvantagetothisap-proach!---pensivecapacitorbyinterleavinglayersofdrypaperwithaluminumfoil,-madecapacitorsisthatthetapeorglueusedtobondtheassem-blymustbeoil-(bond)(Lexan),(rigidtype)(Mylar),:,2Testedat300HZusingaHealthkitIM-,"gapwithstoodover10,!Thisfreearticalofnewsdealswithsubjectmatterthatcanbehazerdoustoyourhealthandlife!,
severalthingstoconsiderwhende-’spointouteachonebeforemovingtotheconstructionde--spitetheromanceofhighvoltage,-thalvoltages,observanceofallsafetypracticesforhighvoltage(orHV),seetheboxedtextentitled"HighVoltageSafety"Thenextaspecttoconsiderisca-pacityIfyouhaveaspecificcapaci---hapsyoupreferexperimentingin-,whenbuildingforthefirsttime,wesuggestmakingsmalldesignsfirsttogetusedtotechniquesandquirksbeforeyouinvestlotsoftimeandmoneyYoumustalsotakeintoconsidera--,butanarcisserious:,-cialcaseswheretheinsulatorisa"self-healing"type(,andsomeplastics),,,youaremultiply-ingitshazardmanyfold!Therefore,experi-mentersmusttakeextraprecautionstoavopidpainfulshocksandpossibleelec--lowwhenworkingwithhighvoltage:Labelyourprojectinseverallocationswith:“DangerHighVoltage〞whereappro-.(SeeFigw).KeepChildren,petsandothersawayfromyourcapacitoretc...Coverallbareleads,wires,wires,connectionterminals,,LocateyourHVprojectawayfromappliances,metaldoorswindowframes,heatingducts,vents,radiators,-...Usegoodventilation,projectsusingTeslacoilsandJacob
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caseofDC,agoodruleofthumbisa50margin,Forexample,sayyouneeda500-voltDCcapacitorusingpolystyrene,ConsultingTable1,notepolystyrene’sbreakdownis500voltspermil,,whichisade-quateforpureDC,Youcanalwaysuseathickerdielectricifit’sexpedient,providingthatyouadjustthenumberofplatesortheirsizetoaccommo--ingapapercapacitor,,DCputsrela-,ACreversesthedielectrics’-,whenconsideringdielec+ricsinACapplica--age—notrms(/?ootMeanSquare)voltage—thattheywillbeexposedto,Ifyouwishtoconvertanrmsvoltagetoitsequivalentpeaksinewavevalue,multiplyitby1,414,So,toroughlycalculatethepropervoltageratingneededforanACca-pacitor,-tion,alloneneedstodoismultiplythe