kikusui_orc_27a 电路图.pdf

l1(il:i ;. (, 1., . Ti-i (, .1t,t /.,ii)ti ()l,l,lir, l-!(l., . ,.,i .,1 t.ii.L.,.L I lll,l,(ill(_r)rl( :, ( (,riti, ( , , : - r r , , : - l : : l : t r , . 1 , . r - - l i . , - , : , , : . . ; , i , I . . i . , , l , ! i t r . i - . ( I .t; : _( RadioFans.CN 收音机爱 好者资料库 ( ()i iL)! I Ot)llI?A1l(l (O.illlirlltAf l() ,u iATNTi.lA( f, o (iI?tL Il Dl.A(,RA,-; ( RadioFans.CN 收音机爱 好者资料库 V 1U SPECIFICATIONS Type - Wien Bridge RC Oscillator Power Rcqui:ement 24C -y, 50,/6OH:- Approx, 3ovA Dimer;sions JOO(W) r 170(U) :; 153(D) mm ( Mar ) toOiw) x 1s0(u) x 110(D) mm Worght Vacuum Tube Accessones Frcquency Rangc Calibration Accuracv frequency regulation Frequency response Approx. 5kg 5AV6 6AR5 1zAT 7 6)4 Operation I4anual Test Data xl x 1O x 1OO x 1k -3- : a : 1 1 18 - 2OOHz 1BO - 2OOOHz 1 800 - 20000Hi 18 - 200kHz 1 2 1 4 I From 18tlz to loOklz , ! (2% + 1 tz ) For AC -?.40_V, t 5%t Less than * 1% Sine : Less than j O,5 dB ( reference : l kHz ) Square : Less than i 0,5 dB ( referencc : 1 kHz ) up to 2Okllz Maximum Output Sine : more ttran 5 V rms Squa.re ; more than 10 Vp-p Complex : morc than 1O Vp-p Distortion o-f Sinc Wavc l,css than 1 f, at 1kl1z , / Lo= than 1 clB . Sag or Overshoot of Sqare Wave 7 Lcss than 1 Complex Wave Basc line frequency Superposed Wave lBHz - ?OOkHz Amplitude Ratio Approx, ;1 / Output ImpedanceLess tiran 3 kil RadioFans.CN 收音机爱 好者资料库 / Frccluencl- control -2 Irequenc , AuoOutput Leve.I - A - Por,rcr srvitch OutJrut tcrminals for replacement 2o FLTNCTION OICTONTROLs AND TERIutNALb uaveform Rcmovc this panel of thc:rmi stcr oRc,27A OSCILLATOR I r q -3 OPERATION .1 INIIIAL PROCIIDURII Conrrect tire porver ca=irlc to a po.,er line of thb snecifietl voltagc ancl frcquettc, Turn the pol,er sn.tch to ON., 1hc lamp of dial illumination uill light and tirc irrstrument will opcratc aftcr a fe:w minutes warm -up It will ber w-itliin specifications after 3O minutcs. 3.2 I RIiQUIINCI Se:t tlto RANGE and liRFjQUIINCY cor.rtrols for thc clcsired frequcrrcl,- Thc frequencv di:rl scale must be multpliccl i:-v thc multipll-ing factor indicated b5 the RANGtr sn,itch setting to obtain the oscillatorfrequencyc llxAtvIPLE: 1oo ( on clial scale ) x 1o (multiplS,ing factor indicated bI RANGIT :IWITCH settilir ) : t tUz When the rot:rr-v s.vitch r,irich sclccts WAVEFORIyi is sct in the position of CON4PLEX, thc r.a.luc ol.,taincd above is tlic frccllrency of superpaseC wave , lvhilc- the base frcquency is constant ( .= linc frequency ) at any position of the RANGIT and FREQUtrNCY controls settingo 3 OUTPUT TER4INALS The unbalanced output is ol-.,tained from the potcntiomctcr connectecl betrry-ecn the cathode of the cathocie follor,ver and ground . Ihc Ialue of thc output impedancc valics nearly frorn zr:ro to 3 kQ according to ilre position of the output control , beirrg maximum near its center positiol The load resistance higher than 1O ke is desirecl to avoicl the increase of distortion in or.rtput r,vaveformo The lorver value of resistancb may be uscd at the lorner voltage of the output without thc increase of distortion I r+:,. e: r 4.1 CHANGtr IN OUTPUT CAI*ISED ElY The example of chanp ir , the frequency of oscill:rtion- and the output voltage is slioun in Fig 1 , LINE VOLTAGE VARIATION +4 2 o 2 4O OPERATING CONSIDERATION -6- -4 -6 -a Fig 1 l- output are shown in Figo oO 70pF ehuhted lOkQ TOpF shunted Ll t rq () as 42 FREQUENCY . Frequency RESPONStr response of Frequency Output Voltage sine and square warre Load resistance 2. !t a t k : l* s tr F o too 3fi FREQ (Hz) Fig 43 SQUARE WAVE t Square wave in this instrument is sha.ped from sine wave through the clipper circuito The faster rise time is obtained nearly propbrtional to frequencyo However, the quality of the waveform becomes poor because of the upper frequency limit of the circuitso I I I f:taooHz L.NE YOLTAtions and thc t1-pical f)C voltage r.,rittr:n in thc cirer.rit cliagrarn 5.1 RtrMO,AI-, O, CA:;tr cre ) C T C W Top vicwBottom view Iig 3 5. 2 RtrPI,ACEN4ENT Otr TIERMISIOR Tho-rmistor of this instrumorrt is easily rc;rlaced by removing tl.c srnall square panel on thc rear of thc czrsc, 5 3 IRtrQUtrN(-)Y CAI,IBRATION To removc tjrc ca,sc, r:emove fivc: front pancl slrorvn in Fig, 3, and instrumonto It is lrecommcnclecl to c1 uring a bove proce-.clule, scr()ws on tlic top elnd l-rottom of fho sliclc thc,. case to tl-re rcar arrtl off tlier pu11 off tlrc poucr cablc fr:om the linc I Tire resistors and turring ca.pacltor of the frequc-.ncy cletcrmining netrnork in thc instr:umcut are sck:ctcd accor:<ling to thc splecified rating, The instrumcnt uill oscillateor.cr all rangcs properly at tirc frc-c1ucnc1- indicated on thc frequency dial if the calibration os made at onl-v* one point ncar: high end of the dial Thc follorving procedur:e is recommcnded ,hen the frequencll sta.ndard of 2OOOHz for instance is availablc, -B- (r) cHECK FoR Low oF DIAL Check the dial nee<ile is exactly on tr O fof the even scale beneath the ! mi:ror when turning capacitor is in thc position of maximum capacitancee (2) cAPAcITY BALANIE ot- BRIDGE Set the turning capacitor in the ma: l Lr- f a - t , q. : d !i o f a l Bt t t hl s A r 5;x lri ?i:f l; i N o i d N f -o t l ilt | -8f+a,w-o ly -l lf -rt-AVo*-<, lai dfr.i 9AAno : ;i i -t3 :.1 L l i ini 5rl ,l l,; vl I <i r.- a Ar! . r-l d.t I J I I An v,v ;5: -. lt: - .-.-=-)k- 11 , a 6 UsirS i E r J t v l L:j 1*# i t:. ;: .i., lf0Dgli OR0-8?A B-C 0S0IttrTOA rSST DATT 8eria1n, -L?-QJIE_51 Fr equencY : i Range i X I i Dla $oalo ,i FrequenoY -sq i-ta: _!o ,_l 62P r nn i - - DlNtortl0a (1xBs, t00 K obsLoad. * at nar. outFut )alf-r Ineulation ( Dc 1000v betrYoBtl ae and Cbasale Mo ro thau ) 0 M ohns ( ,./) x T( tln. vol tlrso * *4Q- - -v Datc . $iil- *?- l$ln- - 0 Hr* Fowrr ecac,rroptlf,o - - l/-*- A r l . . )KRoon Ttnp.& R.H 1J-trlb-S Fltal ,rrrrY-Wrrn/O Ineprnr. /fu-W xL0 Fr equenoy x 100 F requenoyFr eguenoy BIruSgI BLSSgRoHrsg eonF. *.,*,-.- :il ffi a r I i : :,i i. 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