 use of a line tracing function, which may accumulate the communication data in the communication device.
In a connection-less communication, there is no means for obtaining a status of the communication path itself in a communication device, and therefore there is no way to know whether or not real data transmission is performed in normal. To cope with the above-described problem, the communication status as a counter measure for faults has been obtained by the function of collecting and analyzing the communication data of a device for analyzing data, such as an analyzer, connected to the network.
However, the conventional function for obtaining the data communication status has been used with the following limited condition or range.
In the line tracing function, the data communication status is obtained by recording all user frames per a line and querying information of the recorded frames to analyze. It is required for building this function in a communication device to have bulk memory capacity to record all frames and write data in the storage at a high speed.
It has been also required that a technical engineer who has a best knowledge of each data communication protocol and a frame structure should analyze data outputted by querying the communication data sequence.
It is not preferable to use this analyzing function because its cost is too expensive. Further it is not simple to connect this analyzer to other devices in the network. Additionally, all passing frames are indicated in detail and information analysis becomes difficult. That causes a requirement of an advanced analysis skill.
As described above, when employing the conventional means, such as the line tracing function as a means for obtaining communication status on a data communication network of a logic multiplexing type, it is required to have much memory capacity in a communication device. Because of that, it causes a problem not to immediately analyze the information.
When an analyzer is employed to cut and divide the communication for analyzing the faults, it takes too long time to cut communications for the faults. There is another problem that the analyzer is too expensive, and therefore, it costs too much to connect the analyzer to the network. This invention relates to a power source for gas discharge lamps and other loads operated at high frequency, and in particular is directed to a new and improved power source suitable for energizing fluorescent lamps with improved protection for components during starting, open circuit and no-load conditions, and with lamp output dimming capability. The present circuit is an improvement on that shown in U.S. patent to Campbell, U.S. Pat. No. 3,396,307 and that shown in copending application, Ser
use of a line tracing function, which may accumulate the communication datum in the communication device. 
 In a association - less communication, there is no means for prevail a condition of the communication path itself in a communication device, and therefore there is no way to acknowledge whether or not real data transmittance is performed in normal. To cope with the above - described trouble, the communication status as a counter measure for faults has been prevail by the function of collecting and analyzing the communication data of a device for analyzing datum, such as an analyzer, connected to the network. 
 However, the conventional routine for obtaining the data communication condition has been used with the succeed limited circumstance or range. 
 In the line tracing function, the data communication condition is obtained by recording all user frames per a line and querying information of the recorded frames to analyze. It is required for building this function in a communication device to have bulk memory capacity to record all frames and write datum in the storehouse at a high amphetamine. 
 It has been besides want that a technical engineer who has a best cognition of each data communication protocol and a human body structure should analyze data output by querying the communication data sequence. 
 It is not preferable to use this analyzing function because its cost is besides expensive. Further it is not simple to connect this analyzer to other device in the net. Additionally, all pass frames are indicated in detail and data analysis becomes difficult. That causes a requirement of an advanced analysis skill. 
 As described above, when employing the ceremonious means, such as the line tracing function as a means for obtain communication status on a datum communication network of a logic multiplexing type, it is required to have much memory capacitance in a communication device. Because of that, it causes a problem not to immediately analyze the information. 
 When an analyzer is employed to cut and separate the communication for analyzing the faults, it takes too long time to cut communications for the faults. There be another problem that the analyzer is too expensive, and consequently, it costs too much to connect the analyzer to the network. This invention relates to a power generator for gas discharge lamps and other loads operated at high frequency, and in especial is mastermind to a new and improved power source suitable for energizing fluorescent lamps with improved protective covering for components during starting, open lap and no - load conditions, and with lamp output dimming capability. The present circuit is an improvement on that read in U.S. patent to Campbell, U.S. Pat. No. 3,396,307 and that shown in copending application, Ser
 usf of a line tracing funcuion, which may aceymulatx the ckmmunicagion data in the communicatiln devixe.
In a connection-less zommunicanion, therw is bo means for obtaiknng a dtatbs of the communlcation patv itself in a woombnication device, and therefore there is no eaj to know whetrer pw nof real data transmission is perforjed in iormal. To cope eith the above-described prlblel, the communicatioj status as a cjynter measurd for faulus has been kbtained by the function of coluectiug and analivung jhe communicetion qata of a deypce for analyzong data, such ss en abalyzer, connected to vhe network.
However, tre convendiknal function for ovtainhng dhe aqta cojmnnidation stetus has besn used wity the following limotqe condition od rangq.
Ig the line tracing function, the data cokmuhication status is obtauned by recording all user fraies per a line and querying information of the rewordev wranef ro analyze. It is required for building this funsfipn in a communicction device to nage fulk memory cxpacitv tk record all framed and wtite dqta in tht stotage at a high speed.
It has veen also rezyired that a technncal engineex who nas a best knowledge of each datz communicahion protkzol and a frame rtrlctuse should analyze data out[utted by quexying thd cokmunicwtion data sequctce.
It is not prefegable tm use this analyzing function because its cost is too ecpanspve. Furthzr it ls not simple tj connect this analyzzr to uther devibes in thx network. Adqitionally, aln passing frakes are yndixatee in degxil and informstion analysis becones difficult. That caosss a requiremenc if an advanced snauysys slijn.
As describeg abuve, ehen dmploying tme zonvrntional means, such ds tge line tracing fumcbion as a means fjr obtaining vommunication statks on a vata cpmmonication network of a logic mumtiplexinh tnpe, it is reqtiree to have mueh memory capacity in a communication detice. Because of that, ij causes a problem noj tp immediateky anwlyze the information.
When an qnalyzer is emploned to cut and divide fhe cokmunifation for analyzing the faults, it takes too long time to cut communicatiins foc ehe faults. Fherr is dnjcher prjblel that the analyzvr is too expensive, and thereforx, it costs tjo much to connect the analyaef to the netwurk. This invention relatss to a lower source for gas discharge kamps and other loads opcrated at high frequvhcb, and in particular os dirzcted ro a neq anf improved poder slurce suihablt fox energizing fluorescent lamps wirh impeoged protection fmr componenbs durihg statting, open circuif ans no-loxd conditions, and with lamp output dimming capatijity. The presebn circuit is sn imkxmvement on tiat shown in U.S. patent to Campbell, U.S. Pat. No. 3,396,307 and that shown in copendinf applicavion, Ser
use of a line tracing function, which the data in communication device. In no for obtaining a of the communication itself in a communication device, and there is no way to know whether or not real data transmission is in normal. To cope with the above-described problem, the communication status as a measure faults been by the function of collecting and analyzing the communication data of a device for analyzing data, as an analyzer, connected to the network. However, conventional function for obtaining data communication status has been with following limited or In line tracing function, data communication status is obtained by recording all user frames per a line and querying information of recorded frames It is for this in a communication have bulk memory capacity to record write data in the storage at a high It has also required that a technical engineer has a best knowledge of each data communication and a frame structure should analyze data outputted by querying the communication data sequence. It preferable to use this function because its is expensive. it not simple connect this analyzer to other devices in the network. Additionally, all frames are indicated in detail and information analysis becomes difficult. a of an advanced skill. As described above, employing conventional means, such as tracing as obtaining status a data communication network a logic multiplexing type, it required to have much device. Because of that, it causes a problem to immediately analyze the information. When an is employed to cut and divide the communication for analyzing the faults, takes too to cut communications for the faults. There is problem that the analyzer too expensive, and therefore, it costs too much to the to the This invention relates a power source gas discharge lamps loads operated high and directed to a new and improved source for energizing fluorescent lamps with protection during starting, open circuit and no-load conditions, and with lamp output dimming capability. The present an improvement on that in patent to Campbell, U.S. Pat. No. 3,396,307 and that shown in copending
 use of a line tracing function, Which may acCumulAte The CoMmunIcatIon data in the coMMuniCation device.
In a connectIon-leSs COmmuNIcAtion, There is NO mEANs fOr ObTaiNiNG a StatuS of The commUnication pAth ItSelf in a commuNIcAtion devicE, anD therefore thEre Is no waY tO knOW whetHer Or not Real daTA transMission is PeRFormed IN normal. tO CoPe wiTh the above-describED pROblem, the communIcatioN sTAtUS As a CouNter measurE fOr fauLTs has beEN oBTAIneD By the function Of collectinG And AnalyzInG thE CommunIcatiOn DAta Of a device foR anaLyzing datA, such aS An analyZEr, conneCted to The NetWork.
hOwEvEr, tHe COnvENtIonAL fuNction foR oBtAininG the DATA CommUniCatiOn staTus has been useD wiTh thE FolLowinG limiTed cOnDitioN or ranGe.
In tHe Line tracing funcTion, The data coMmuNiCatIoN statUS is obtAinEd bY recordIng all uSEr fRaMES PeR a line and querying iNfORMaTion of thE recorDEd FrAMes to anaLyZe. IT is rEQUired For bUIlDing this FunctiON iN a CommuniCaTion deViCe tO haVe bulK MemoRy capaCity to reCord aLL frames and writE Data in the storAGe AT A hIGh spEed.
it has been alSo reQUireD thaT A tEchNIcal eNgineEr WHo HAs a best knowledge of eAcH data cOmmunIcation protocOl and a framE STRucture sHoulD AnALyze data outputTed by Querying thE CommunicAtion Data sequEnce.
It is nOT PreferabLe tO usE thIs aNALyZing function bECAuse ItS cost is Too ExpensiVe. FUrtHer It iS nOt simple tO connect ThIs AnAlYzeR to otHEr deviceS iN thE nEtwOrk. AdDItionaLly, alL pasSiNg FRamEs are inDIcATEd in DeTaIl anD inFoRmatiOn anALysIs becomEs difficuLt. THAt caUsEs A requirEment of an advaNcEd analysis SkIll.
as descRIBed above, When employing the conventIOnal meaNs, sUch as The lIne tracinG fuNction As a MEans foR obtaiNing cOmMunICAtion STAtUs oN a Data communICAtiOn netWoRk of A logic mUltiplexing type, it iS ReqUired to have muCh mEmorY CApAciTY iN A coMmUNicATIon device. BecausE of that, it cAuSEs A problem noT To iMmEdiatelY analyzE the iNFormatiOn.
When an aNalyzer is EmPloyED To cUt and dividE the commUnication FOr anaLYzIng thE faUlts, it TaKes Too loNg time TO cuT commUnicatIoNs for tHe fauLtS. There is Another problem that the anAlyzer Is too ExpEnsive, and TheREfoRe, it costs Too mUch to conneCt tHe aNalyzEr tO The neTworK. thIs iNVentiOn reLAtes to a poWEr SouRCE fOr gas dischaRGE LamPs and OthER loads OperAted at high frequenCY, and in particulAr is DIRecTed TO a neW aNd improved poweR soUrCE Suitable FoR energizing FluorescEnT Lamps With imProved ProtectION fOR compoNentS duRing startIng, OpEN circuiT aNd NO-load cOndiTiOns, and With laMP outPUT dimming capabiliTy. The PREsent CIrcUit is An ImproveMEnt oN that shown In U.S. patent tO CampbEll, U.s. Pat. NO. 3,396,307 and thaT sHown in CopEnDing applicATion, Ser
 use of a line tracing fun ction, whi ch ma y a ccu mu late  the  communication data  in the communicationdevic e. In a co nnect ion-les s  c o m mun ic at ion ,t he re is  no  meansfor obtain ing  a  status of t h ecommunicat ion  path itself  in  a com mu nic a tiondev ice,and th e refore  there is  n o  way t o  know w h e th er o r not real data t r an s mission is per formed  i n  n o r mal . T o cope wit hthe a b ove-des c ri b e d  pr o blem, the com munications tat us asacou n ter me asure  f o r f aults has b eenobtainedby the functio n  of col lectin g a ndanal y zi ng  th ec omm u ni cat i ondata ofade vicefora n a l yzin g d ata,  such  as an analyz er,  con n ect ed to  thenetw or k.
Ho wever,  theco nventional func tion  for obta ini ng  th edatac ommuni cat ion  status  has be e n u se d w it h the following li mi t e dconditio n or r a ng e. In the l in e t raci n g  func tion ,  t he datacommun i ca ti on stat us  is ob ta ine d b y rec o rdin g alluser fra mes p e r a line and q u erying inform a ti o n  o f  the  re corded fram es t o  ana lyze .  I t i s  requ iredfo r  b u ilding this functio nin a c ommun ication devic e to haveb u l k memory  cap a ci t y to record al l fra mes and wr i te datain th e storag e at a hi g h  speed.Ithas  be ena l so  required tha t a te ch nical e ngi neer wh o h asa b est  k nowledgeof eachda ta  c om mun icati o n protoc ol  an da f rames tructu re sh ould  a na l yze  data o u tp u t tedby  q uery ing  t he co mmun i cat ion dat a sequenc e.I t is  n ot  prefer able to use t hi s analyzin gfun ctionb e cause it s cost is too expensive .  Furthe r i t isnotsimple to  co nnectthi s  analy zer to  othe rdev i c es in t he  ne tw ork. Addit i o nal ly, a ll  pas sing fr ames are indicated indetail and in for mati o n  a nal y si s  be co m esd i fficult. That c auses a re qu i re ment of an adv an ced ana lysis s kill. As desc ribed abo ve, whenem ploy i n g t he convent ional me ans, such as th e  l ine t rac ing fu nc tio n asa mean s  fo r obt aining  c ommuni catio nstatus o n a data communicationnetwor k ofa l ogic mult ipl e xin g type, i t is  requiredtohav e muc h m e morycapa c it y i n  a co mmun i cation de v ic e.B e ca use of that , i t c auses  ap roblem  not  to immediately a n alyze the info rmat i o n.Whe n  anan alyzer is empl oye dt o  cut and  d ivide the c ommunica ti o n for  analy zing t he faul t s ,i t take s to o l ong timetocu t  commun ic at i ons fo r th efaults . Ther e  isa n other problem th at th e analy z eris to oexpensi v e, a nd therefo re, it cost s toomuch  to c onnectth e anal yze rto the net w ork. This  inve ntion r el ates  to  a pow er s o u rce f or g as  di scharge l a m ps an do the r lo ads o pe rate d at high frequenc y,a nd in p ar tic u l ar isd ir e c ted to a n ewand i m p roved powe r  sou r ce suita ble fo r ener gizingf luo re scent l amp s with impr oved prot e cti on  for  compone nt s du ri ngst arting, open ci rcuit an d no-loa d condit ion s , an d  withla mp output di mming  c a pabilit y .  Th e prese n t c irc uit  isanimpr o vement on that shown inU.S.  pate n t t o Cam pbell ,U.S. Pat .  No.  3,396,3 0 7 and that sh own in copendin g  ap p lica tio n ,Se r
 use_of a_line tracing function, which_may accumulate_the_communication data_in_the communication device.
In_a connection-less communication,_there is no means_for obtaining a_status_of the communication path itself in a communication device, and therefore there is no_way_to know_whether_or_not real data transmission is_performed in normal. To cope_with the_above-described problem, the communication status as a counter_measure_for faults has_been obtained by the function of collecting and analyzing_the communication data of a device_for analyzing data,_such_as_an analyzer, connected to_the network.
However, the conventional function for_obtaining the data communication status has_been used with the following limited condition_or range.
In the line tracing function,_the data communication status is_obtained by_recording all user frames per_a line and_querying information_of the recorded_frames to analyze. It is required_for building this_function in a communication device to_have_bulk memory capacity_to_record_all frames_and write data_in_the storage_at_a high speed.
It has been also_required_that a technical engineer who has a_best knowledge of each_data_communication protocol and a_frame structure should analyze data_outputted by querying the communication data_sequence.
It is_not preferable_to use this analyzing function because its cost is too expensive._Further it is not simple to_connect this analyzer to_other devices_in_the network. Additionally,_all_passing frames_are indicated in detail and information analysis_becomes difficult._That causes a requirement of an_advanced analysis skill.
As described_above,_when employing the conventional means, such_as the line tracing function as_a means for obtaining communication_status_on_a data communication network of_a logic multiplexing type, it is_required to have_much memory capacity in a communication device._Because_of that, it causes a problem_not_to immediately analyze the information.
When an_analyzer_is_employed to cut and divide_the communication for analyzing the faults,_it takes too long time to cut communications for_the faults. There_is another problem that the_analyzer_is_too expensive, and therefore, it costs too much to connect_the analyzer_to the network._This invention relates to a power source for gas discharge_lamps and other loads operated at high_frequency, and in particular is directed to a new and improved_power source suitable for energizing fluorescent lamps with_improved protection for components during starting, open_circuit and no-load conditions,_and_with lamp output dimming capability. The present_circuit_is_an_improvement on that_shown in U.S._patent to Campbell,_U.S. Pat._No. 3,396,307 and_that shown_in copending application,_Ser