CS247107B1 - Circuit of a telephone set with equipment for loud hearing and individual connection - Google Patents
Circuit of a telephone set with equipment for loud hearing and individual connection Download PDFInfo
- Publication number
- CS247107B1 CS247107B1 CS817525A CS752581A CS247107B1 CS 247107 B1 CS247107 B1 CS 247107B1 CS 817525 A CS817525 A CS 817525A CS 752581 A CS752581 A CS 752581A CS 247107 B1 CS247107 B1 CS 247107B1
- Authority
- CS
- Czechoslovakia
- Prior art keywords
- connection
- cbh3h
- resistor
- circuit
- resistors
- Prior art date
Links
- 239000003990 capacitor Substances 0.000 claims 1
- 238000013016 damping Methods 0.000 claims 1
- 101100066898 Mus musculus Flna gene Proteins 0.000 description 2
- RHMALYOXPBRJBG-WXHCCQJTSA-N (2s)-6-amino-2-[[(2s)-2-[[(2s)-2-[[(2s)-2-[[(2s)-6-amino-2-[[(2s)-2-[[(2s)-2-[[2-[[(2s,3r)-2-[[(2s)-2-[[2-[[2-[[(2r)-2-amino-3-phenylpropanoyl]amino]acetyl]amino]acetyl]amino]-3-phenylpropanoyl]amino]-3-hydroxybutanoyl]amino]acetyl]amino]propanoyl]amino]- Chemical compound C([C@@H](C(=O)N[C@@H]([C@H](O)C)C(=O)NCC(=O)N[C@@H](C)C(=O)N[C@@H](CCCN=C(N)N)C(=O)N[C@@H](CCCCN)C(=O)N[C@@H](CO)C(=O)N[C@@H](C)C(=O)N[C@@H](CCCN=C(N)N)C(=O)N[C@@H](CCCCN)C(N)=O)NC(=O)CNC(=O)CNC(=O)[C@H](N)CC=1C=CC=CC=1)C1=CC=CC=C1 RHMALYOXPBRJBG-WXHCCQJTSA-N 0.000 description 1
- 241001553014 Myrsine salicina Species 0.000 description 1
- 108700031620 S-acetylthiorphan Proteins 0.000 description 1
- 240000007313 Tilia cordata Species 0.000 description 1
- 241000023701 Uranophora Species 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- LCCNCVORNKJIRZ-UHFFFAOYSA-N parathion Chemical compound CCOP(=S)(OCC)OC1=CC=C([N+]([O-])=O)C=C1 LCCNCVORNKJIRZ-UHFFFAOYSA-N 0.000 description 1
- 230000029305 taxis Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M9/00—Arrangements for interconnection not involving centralised switching
- H04M9/08—Two-way loud-speaking telephone systems with means for conditioning the signal, e.g. for suppressing echoes for one or both directions of traffic
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Amplifiers (AREA)
- Crystals, And After-Treatments Of Crystals (AREA)
- Telephone Set Structure (AREA)
Description
-1-
OtjjiaCTb ΠΡΗΜβΗβΗΗΗ H3O6peTeHHH Η3θ6ρβΤβΗΗβ OTHOCHTCS K ΤβΠβφΟΗΗΟΜΥ annapaTy C yCTpoňCTBOM ΓΡΟΜΚΟΓΟΒΟ-pameň h HHAHBMnyajibHoň cbhsh c ΜκκροτβηβφοΗΗοϋ τργΒκοΗ, yKnaflbiBaeMoň HaKopnyc H ΓρΟΜΚΟΓΟΒΟΡΗΤβΠβΜ, κοτορωϋ, B HaCTHOCTH, HaXOflHT ΠρΗΜβΗβΗΗβ flJIHpauHOHaJiHsaunH ynpaBneHnecKoň pa6on>i. 3tot panHOHanH3aTopcKHft 3φφβκτ coc-toht a tom, ίτο KBK nocne Hanana nocbuiKH Bt>i3OBa, τβκ n b nponeccé pasro-BOpnoft cbhsh MoryT npoH3BOflHTbCH κοΗτροπΒ h BefleHHe pa3roBopa ot annapaTaΗΠΗ BbinOJlHHTbCH flpyrHe BHflbl fleHTeJlbHOCTH.
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HsBecTHbt MHoroHHCjieHHMe τβπβφοΗΗΜβ annapaTbi c ycTpoňcTBOM γρομκογοβορη-meft h MKAHBHnyajjbHoň cbh3H, b kotophx pasnuqHbíM o6pa3OM npefloTBpamaioTCH : : HBJjeHHH napasHTHoft oĎpaTHoň cbhsh Meacny nepeflawmeň a npneMHoň ctopohoÁ,KOTopbie ORHaKo TpeSyioT noBbímeHHbix cxcmho—TexHHnecKHx η/ηπη KOHCTpyK.THBHwxsaTpar, a Taxxe SHanHTenbHbix MomHocTeň. 3to cnpaBennHBo, b nacTHocTH, απηpemeHHH cornacHo DE-AS 2758 573, κοτοροβ OTJiHnaeTCH ηβπηηηθμ οβΜπφΗργιοπίΗχ3BeHbeB b nepeflatonjeM h lipneMHOM xaHane. lípu stom ynpaenHioqaH cxeMa, coc-Toamaa H3 .qeTeKTopoB h cyMMHpyxnpix seeHbeB, ynpaBJíneT saTyxaHueM b xaHajiax.KpoMe Toro, hs DE-AS 22 58 415 HSBecTHo peweHHe, κοτοροβ o6ecneHHBaeT no-oaBjíeHHe napasHTHoft oCpaTHoft cbhsh 3a cneT τογο, hto TpurrepHaa cxeMa, HaxoTopyn oKa3bisaeT ΒΠΗΗΗΗβ ypoeeHb npneMa h nepeflann, ynpaBJíneT peryjiupye-MbíM npne’MHo-nepeflaTOMHbiM ycHnwreneM, κοτορωή npennouTHTenbHbíM o6pa3OM 6e-ρετ Ha ce6a ynpaBneHHH xaiianÓB no pasroBopnoMy cHrHany. OflnaKo τβηβφοΗΗΜϋannapaT, yripaBnneMuň no paarosopHOMy curHany, HMeeT HeflocTaTox, 3aKmonaio-muňca b yxyEtfiieHHH pasfiopnUBOCTH cnoroe h napaMeTpos nepe^ami.
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'HOft CBHSH, KOTOpaH npH MHHHManbHblX 3aTpaTaX 6β3 ΒΚΠΙΟΗβΗΗΗ AOnOJlHHTenbHblX 247107 -2- ΑβΜπφΗργιοπίΗχ 3BeHbeB npeflOTBpamaeT HB.neHHH napa3HTHoň oOpaTHoft cbh3H Meac-fly nepeflaiomeň h npHGMHoň CTopoHoň a rapaHTHpyeT xoponme napáMeTpbi nepeflaaHflJIH OonbIDOH βΠΗΗΜ HHHHH CBH3H. IIpH 3TOM ΕΧβΜβ flOJlWHa ΤβΚΜβ rap3HTHpOBaTbnpeflOTBpameHHe napa3HTHoťí očpaTHOft CBH3H Me®py nepeflamnnM η πρηθμημμ xaHa-JiaMH npH 6onblUOň rpOMKOCTH 3a ΟΗβΤ ΠρΗΗΗΤΗΗ noflXOSSlUHX Mep, Η 3TH Mepbl HeflOJiacHbí TpefíoBaTb hH HannanH cocTaBnairaneft ποοτοηηηογο ηηπρηκθηηη hh flonon-HHTenbHoro πητηηηη ηπη 6γφβρΗοή cxeMbi, ητοδω ofíecneaHTb βο3μοχηοοτβ ncnojib-30Β3ΗΗΗ JIHHHH CBH3H MaKCHMaJlbHOň flJIHHH, a TaX«e ΠΟΛΗΟΓΟ HCIIOJIb3OBaHHH OT“6HpaeMQH OT ΤβΠβφΟΗΗΟΗ CTaHUHH MOmHOCTH flJIH yCHJieHHH B ΠΡΗ6ΜΗΟΜ KHHaJIG HTpaHCJiHHHH aepe3 rpoMxoroBOPHTenb, a Taxace «na ycHneHHa b nepeflaromeM xa-Hajie.
H3JIOJKGHH6 cymHocTH H3o6peTeHHH 3a#aaeH Η3θ6ρβτβΗΗΗ HBnaeTca cosnaHHe cxeMbi fljia τβπβφοΗΗΟΓο annapaTa c' npoBOflHbíM nHTaHHGM, xoTopaa npH MHHHMaJibHbK 3aTpatax H 6e3 BKHiOHGHHH ΛΟ- nOJIHHTGJlbHblX «ΘΜΠφΗργΜΠίΗΧ 3BeHbGB ΠΟΛβΒΠΗβΤ napa3HTHy!0 OĎpaTHyiO CBH3b MG®“ifly nepenaromeň η πρηθμηοη CTopoHoň. ΠρΗ 3TOM CTaBHTca Tax«G 3a#aaa ycTpaHe- HHH HGflOCTáTKa H3BeCTHbIX yCTpoňCTB rpOMKOrOBOpameň H HHflHBHflyaJlbHOH CBH3HC npOBOOHblM ΠΗΤΗΗΗΘΜ,, XOTOpblň COCTOHT B TOM, HTO Ha ΠΟββΒΠΘΗΗβ napa3HTHOÉoSpaTHOft CBH3H 33TpaaHBaeTCH aaCTb OTGHpaGMOH OT ΤβΠθφθΗΗθή CTaHlíHR MOUHO“cth, xoTopaa TaxHM oSpaaoM hg mojkgt 6ojigg Hcnonb3OBaTbca hh fljia ycHJiGHHaB npHGMHOM KaHajIG HH ΑΠΗ TpaHCJIHIJHH HGpG3 rpOMKOTOBOpHTGJIb, a KpOMG ΤΟΓΟ,npHBOflHT X OrpaHHHGHHJO flJIHHbl JIHHHň CBH3H JIHČO FpOMXOCTH TpaHCnHflHH HepG3rpOMKOťOBOpHTGJlb . IIomhmo 3τογο, b aaflaay bxoaht Taxise cHH3HTb yxyfltneHHG napaMGTpoB nofl-xnioHeHHH h nepeflaaH, npHGymee cxeMaM c αθμπΦηρυιοιπ;ημη SBeHbHMH, h saTpaT Ha • 3JlGMGHTbI H peaflH3aflHW φγΗΚΑΗΗ ynpaBfleHHH B CXGMaX C ynpaBJíaeMMMH yCHJlHTG-JIHMH HJ1H MOflyJlHUHeií ΠΟ BpGMeHH. i CorjiacHo Ή3ο0ρβτβΗΗΐο aaflaaa peraaeTca tgm, hto b H3bgcthoíí cxgmg pa3BGT“ ' ΒπβΗΗΗ nyTGM napaflflenbHoro nofíxaraaeHHa nocneflOBaTenBHoň flenoaxn ρβ3κοτοροΒíx pG3HCTopaM cxeMbi pa3BGTBJiGHHH pasMemeHa MocTOBaa cxGMa, xoTopaa pa36a- jŤíaHCHpyGTca b 3aBHCHMocTH OT aacTOTbi h ypoBHa xoppexTHpyxaxHM sbghom, cog-flHHGHHblM C flHaroHaJIHMH MOCT3. npH 3TOM COGflHHGHHG pe3HCTOpOB CXGMbl pa3BGTBHGHHa C ΜΗΚροφΟΗΟΜ OÓpa3yGToflHy Toaxy noflxníoaeHHa, a cpeflHaa Toaxa nocnep,oBarent>Hoň flenoaxn napan-jiGJibHO noflxmouGHHbix peaHCTOpOB - flpyryio Toaxy nofíXjnoaeHHa flHaroHaneň moc-Ta, X XOTOpbIM aepG3 KOHfleHCaTOpH nOflXJIIOneH yCHnHTGJIb fipHGMHOrO XaHaJia, Bbl“.nOJIHGHHblň B BHflG ΑΗφφβρβΗΑΗΗΠΒΗΟΓΟ yCHJlHTGJIH, ΠρΗΗΘΜ HHBepTHpyiOHflrii BXOflycHJiHTena πρηθμηογο XaHana h xoppexTHpyromero SBGHa coeflHHaeTca c ToaxoňnOflKJHOHGHHH, o6pa3yeMOÍÍ ΜΗΧροφοΗΟΜ H pG3HCT0paMH, HepG3 flpyroň PG3HCTOP·KoppexTHpywmee 3BGH0 h cxeMa pa3BeTBneHHH hmgkt npH 3TOM o6myw onopHyioToaxy. CHman, cHHTMň c flHaroHaneň MOCTa h noflaHHMň Ha ycHJiHTeab πρηθμηογοxaHana, c noMombro xoppGKTHpyramero 3BeHa npH Hcnojib3OBaHHH xapaxTepHCTHKHnoJiHoro conpoTHBJíeHHH BXOflOB nocjie«ywmero ycroiHTena πρηθμηογο xaHana ποητηóe3 HexaweHHÉ cxHMaeTca c aacTOTHoň HsĎHpaTenbHocTbH) b flHana3OHG BbicoxnxaaCTOT, xoTopbie npeflCTaBnaioT ocHOBHyto npHHHHy bo3hhxhobghhh napa3HTHoňoópaTHoň CBH3H c xaHanoM nGpG«aaH, b· to BpeMa xax flHanaaoH aacTOT, πρηηη-MaeMoro cHrnana, onpeflenaionuíň ocHOBHyw paaroBopHyio aacTOTy, ycHnHBaeTca nHHeňHo. m _ ______
3a CaeT BblSopa OTHOmGHHH ΟΟΠρΟΤΗΒΠβΗΗή B MOCTOBOH CXGMG ΒΠΗΗΗΗβ CXGMblpa3BGTBneHHH Ha Tpe6yeMyw pasCanaHCHpoBxy moctoboA cxeMbi npaxTHaecxH Heo-myTHMO. KoppGXTHpymeé 3ΒβΗΟ B COaeTaHHH C ΠΟΠΗΜΜ COnpOTHBnGHHeM BXOflOB 247107 -3- yCHJIHTejIH ηρΗβΜΗΟΓΟ KaHSJía, aaBHCHMblM ΟΤ ypOBHH Β BblÓpaHHOM AKanaSOHeypoBHH, o6ecneMHBaeT 3φφεκτ cacaTHa tojibko ajih bwcokhx ypoBHeň, οτΕβτοτΒβΗ-hux aa Β03ΗΗΚΗ0ΒβΗΗβ napa3HTHoň οβρβτΗοή CBH3H, a Ha ηηβκηθ ypoBHH He ofca-sbisaeTca CKonbKo-HH6yflb cymecTBeHHoro uacTOTHon36npaTejn>Horo bjihhhhh.
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OnopHaa TOHKa coenHHeHa c rpoMKoroBopHTeneM Lep, flpyroň buboa κοτοροτοCBH3HH C BUXOAOM yCWIHTeJia Β npHeMHOM KHHajie A, H C KHJIOft a COeflHHHTenh-Horo npoBOAa. ΠκτΒΗΗβ ycwiHTena b πρηθμηομ Kanane A οτ coeflHHHTenbHoronpoBOfla c xHnaMM a, b ocymecTBnaeTca nepes paseasuBau^ee sseHo EK. flna npeAOTBpaateHHa ΗβηβΗΗή napaaHTHoň oOpaTHoA cbhsh cuman, CHHMaeMbiílc τοπεκ npHcoeflHHeHHa B, D h Bosmncaranift aa caeT npeflHaMepeHttoft pasOanaH-CHPOBKH MOCTOBOft CXCMbi Π OJI 3 y HROM nOTeHflHOMeTpa R4, noflaeTCH C HHCTOTHOňκορρβκΑΗβή aepe9 KoppeKTupywmee seeHo K na Bxoflbí ycHnirrene B KaHane npHe-wa A. Ecjih aa exoflu ycunHTena β Kaaane npHeMa A «tepeš cxeMy c paajiHHHbíMHOTHomeHHBMH conpoTHBneHHň RV, KoTopue nonynaioTČa H3 oTHomeHHH cyMMU uac-τηηηογο conpoTHBneHna noTeHAHOMerpa R4 h conpoTHBneaHa pesHCTopa R5 κ οβ-meMy conpoTHBJíeHHio pesncTopoB R3 ... R5, noflaBaTb nocToaHHoe BxoflHoe na-npaxeHne τβηβφοΗΗΟΓο annapaTa, to cosflaeTca npeflnoHTHTeJibHbift 3φφβκτ cxa-THa. 3aBHCHMoCTb ypoBHH P rpoMKOCTH npHeMa flna nacTOT £1 a 300 Γιχ H f2 *> 2700 Γη οτ HasBaHHoro Bbíme oTHomeHHa conpoTHBJíeHnň npencTSBJíeHa aaΦηγ.2, nptraeM nacTOTa £2 2700 Γη HBJíaeTca κρΗΤΗΗβοκοή nacTOToň caMOBO3-i 247107 -4- eyxfleHHH, o6ycnoBJieHHoň reoMeTpueň ΜΗκροτεηεφοΗΗοή τργδκΗ. YpoBBHb P cnr~Hana C 9Toň qacTOToň He soracen npaBbnnaTb KpHTmecKofl PK .
Ha Φηγ.3 noKaaaH cxanox ypoBHH δΡ «jih TpaHcnanHH περε3 γρομχογοβορη-Tenb Ha Bbixone ycnnHTena b πρηομηομ xaHajio A πρκ noBbinieHHH ypoBHH Ha10 flB OTHOCHTOJlbHO HOpMajIbHOrO ypoBHH 0 flB BXOflHOrO HanpHX8HHH ΤεπεφΟΗ-Horo annapaTa b 3aBHCHMOCTH ot othodiohhh εοπροτΗΒπεΗΗΗ RV. H3 Φηγ.3 σπεβγετ, η το 3a επετ εοπετεκκΗ χορρεχτκργιοίζεΓο 3B8Ha Κ c ποη-HblM COnpOTHBJIBHHBM BXOflOB yCHnHTOJlH Β Κ3Η3Πβ ΠΡΗ8Μ3 A, 3aBHCHMWM ΟΤ ΥΡΟΒ“ΗΗ Β BbIČpaHHOM ΑΗ3Π33ΟΗ8 ypOBHOň, flOCTHraeTCH 33BHCHMbIH OT ypOBHH οφφεκτcxcaTHH wiH οπρεΛεπεΗΗΟτο οτηοιπθηηη εοπροτΗΒηεΗΗΗ. Φηγ.4 Ha πρΗΜερε pa3Hn~Hbi HacTOTHO3aBHCHMbix cxanxoB ypoBHH &P επξε pa3 ΗπχΗοετρΗργετ 3φφεκτ exa-THH flJIH ΠρεβΗβΜερεΗΗΟή 6anaHCHpOBKH. 3aBHCHMblft OT ypOBHH H H3CTOTH 3φφεκτCXaTHH flJIH npOHOTBpamOHHH HBJíeHHH Π3Ρ33ΗΤΗΟΗ 'oSpaTHOň CBH3H οβεεπεΗΗΒΗΒΤnpefllIOCbUlKy flJlH ΠρΗΜεΗβΗΗΗ yCTpOHCTB HHflHBHflyaJIhHOH CBH3H C BblCOKHM yCH-Π8ΗΗ8Μ Β ΠερεββΚΜξεΜ KaHaJIB, KOTOPH8 p8aJIH3yWTCH H3B8CTHHM o6pa3OM npOCTbl-MH CX8MHO-T8XHHHeCKHMH H axyCTHHOCKHMH CpeflCTBaMH, a T3KX8 BbHlOJlH8HH8ΤρεδΟΒβΗΗΗ K nOJIHOMy HCnOJIb3OB3HHK) OTĎHpaeMOň OT ΤεπεφΟΗΗΟΖ CTaHUHH MOnj- :HOCTH flJIH yCHJWHHH Β ΠρΗβΜΗΟΜ XaHaJie H TpaHCJIHlíHH H8P83 ΓρΟΜΧΟΓΟΒΟΡΗΤβΗΒ,a Taxxe ajih ycHJieHHH β nepeflameM KaHane. ΦορΜγΠβ Η3θ6ρεΤ8ΗΗΗ
Cx8Ma τεπεφοΗΗΟΓΟ annapaTa c ycTpoůcTBOM rpoMKoroBopameň h ηηαηβηηυ-aJIhHOH CBH3H C npoBOflHblM ΠΗΤ3ΗΗ8Μ H OTflOJlbHblMH yCHJIHTejIHMH Β ΠρΗβΜΗΟΜ HnepeflaiomeM xaHanax 6ε3 flonojiHHTenbHbix βεΜπφΗργκχηΗχ 3BOHb8B b sthx xaHa-nax, oTJiHHaioniaflCH tom, hto napajinojibno κ p83HCTOpaM (R 1, R 2) Η3βεετΗοήCXCMhl pa3B8TBJI8HHfl BKJnOH8H3 nOCJI8flOBaT8JIbHaH Ι^εΠΟΗΚΗ peaHCTopoB (R3...R5),xoTopwe b cepepjme o6pa3y»T Tonxy npncoep,imemifi (D) fíuaroaaneň MocTa,flpyroň TOHKoň npHcoenHHOHHH (Β) χοτορωχ hbjihctch cooahhohho ρβ3ΗοτοροΒ(R 1 , R 2) H3BeCTH0H CXeMbl ρ33ΒβΤΒΠβΗΗΗ C ΜΗΚροφΟΗΟΜ (Mi) , Η HTO X 3THMTOHK3M npHCO8flHH8HHH (B, D) nOflKJBOHBHbl KaK KOppeKTHpyKHHee 3B8HO (K) , TaXH H8pe3 KOHflOHCaTOpbl (C1, C2) yCHJIHTeflb B ΠρΗβΜΗΟΜ Kanajie (A), ΒΗΠΟΠΗβΗ-Hbrií Β BHH8 ΑΗφφερεΗμΗβΗΒΗΟΓΟ yCUJIHTOJIH, npHHOM B CBH3b C TOHKOft npHCOeflH”H8HHH (B), nonyqaaMoň H3 coBM8CTHoro BKJitoneHHH pe3HCTopos (R 1, R 2) paa-BeTBJlHlOmeH CXeMbl C ΜΗΚροφΟΗΟΜ (Mí) , BB8fl8H P83HCTOP (R 6) , Η ΟΠΟρΗβΗ TO.H“xa xoppaxTHpyramoro 3BeHa (K) CBHaaHa c h3B8cthoh pasBeTBJíHtoeaeíl cx8Moň.
AHHOTaUHH
CxaMa τεπεφοΗΗΟΓΟ annapaTa c ycTpoiicTBOM rpoMXoroBopamoň h HH«HBnny-anbHoň CBH3H o6ppy#oBaHa, b nacTHocTH, fljiH panHOHajiHaanHH ynpaBJíeHHOCxoňpa6oTbi yxjiaflbiBaaMoň Ha xopnyc ΜΗκροτεπβφοΗΗΟΗ Tpy6xoň η ΓρόΜχοΓΟΒορκτε-ji8M. ΙίεπΒ Η3ο6ρετεΗΗΗ coctoht b tom, hto6m cosflaTb cxBMy τεηεφοΗΗΟΓΟ an-napaTa C nROBOflHblM nHTaHHOM H C ycTpoiicTBOM rpOMKOrOBOpnmaň H HHAHBHfly-aJIbHOň CBH3H, KOTOpaH ΠρΗ MHHHMajIhHhlX 3aTpaTaX npeflOTBpamaeT BO3HHXHOB8-HH8 napasHTHoií oSpaTHoň CBH3H M8Hwy CTopoHOit περεηβΗΗ η ετοροΗοή npHOMa,a Taxx8 rapaHTHpyBT xopomHe napaMeTpbi nepenann πρκ 6ojihmoň flnHHe πηηηηCBH3H. Πρκ 3T0M CTaBHTCH 3anana yCTpaHGHHH H8flOCTaTXa H3B8CTHblX yCTpOňCTBrpOMXOrOBOpnmaň η HHflHBHnyaJIbHOft CBH3H, XOTOpblft 3aXJH0Ha8TCH B TOM, UTOHa noflaBJíeHHa napasHTHoň oČpaTHoft cbhsh aaTpa^HBaeTCJi saMeTHaa uacTb ot-6hp38moh ot τεηεφοΗΗοϋ CTaHijHH moq^hocth h hto, πομημο 3Toro, orpaHHUHBa— 247107 5 eTCH flnHHa JiHHHň cbh3h h MomnocTh, pacnonaraeMan flJin TpaHcnayHH uepearpOMKOrOBOpHTenb.
CornacHO Η3οβρβτβΗΗ» 3anana pemaeTca τθμ, ητο b HseecTHoň cxeMe pas-BeTBJíeHHH paaMemeHa μοοτοβηη cxeMa, κοτορβΗ pa36anaHCHpyeTCH c aaBHCHMO'-CTbJO OT ypOBHa H M8CT0TM KOPpeKTMpyKSUHM 3ΒβΗ0Μ, COeflHHeHHbJM C flUarOHaJIH"mm MocTa. CurHan, οηητμΛ c nuaronajieň moct a h noaaHHbiň Ha ycHJiHTenb npHfeMHoro KanaJia c πομοπιβιο KoppexTHpyiomero 3βθ,ηη h npn HcnonbsoBdHHH xapax-TepHCTHKH noJiHoro conpoTHBjíeHHH BxoflOB nocnenyrotnero ycHJiHTena πρπβΜΗΟΓΟKaHajia πομτη Čes HCKaxeHHň cxHMaeTca c nacroTHoň H36MpaTenbHocTbio b flHa-naaoHe bmcokmx nacTOT, b to speMa xax ««anasoH nacTOT npHHHMaeMoro CHr-toana, onpenenaiomHň ocHOBHy» pa3roBopHyio naoTOTy, ycmiHBaeTCH HHHeftHo. ΠρΗ3ΗΗΗθ H3o6peTeHHeM no pe3ynbT8TaM 3KCnepTH3bi, ocymecTBJíeHHofl BeflOM-ctbom no nenaM HaoSpereHnň η πητθητοβ PflP. 2 nepTexa 247107
Claims (1)
- PfiEDMfiT VYNÁLEZU 247 107 Obvod telefinního přístroje se zařízením na hlasitýposlech a individuální spojení s drátovým napájením ajednotlivými zesilovači v příjmovém a vysílacím kanálu .bez doplňkových tlumicích členů v těchto kanálech, vyzna-čující se tím, že paralelně k odporům (Rl, R2) rozvodnéhoobvodu je připojen sériový řetěz odporů (R 3 ·· R 5)> kte-ré uprostřed tvoří místo zapojení (D) úhlopříček můstku,když druhým místem zapojení (B) těchto úhlopříček je spo-jení odporů (Rl, R2) rozvodného obvodu s mikrofonem (Mi),přičemž k těmto místům zapojení (B, D) je připojen jakkorekční člen (K), tak i přes kondensátory (C 1, C 2) ze-silovač v příjmovém kanálu (A) v provedení rozdílovéhozesilovače, přičemž do spojení s místem zapojení (B), ježvzniká ze společného zapojení odporů (R 1, R 2) rozvodnéhoobvodu s mikrofonem (Mi), je zaveden odpor (R 6) a opětnémísto korekčního členu (K) je připojeno k rozvodnému ob-vodu.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DD22657380A DD154419A1 (de) | 1980-12-23 | 1980-12-23 | Schaltungsanordnung fuer einen fernsprechapparat mit mithoer-und freisprecheinrichtung |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CS752581A1 CS752581A1 (en) | 1985-06-13 |
| CS247107B1 true CS247107B1 (en) | 1986-11-13 |
Family
ID=5528312
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CS817525A CS247107B1 (en) | 1980-12-23 | 1981-10-14 | Circuit of a telephone set with equipment for loud hearing and individual connection |
Country Status (6)
| Country | Link |
|---|---|
| CS (1) | CS247107B1 (cs) |
| CU (1) | CU21478A3 (cs) |
| DD (1) | DD154419A1 (cs) |
| DE (1) | DE3129506A1 (cs) |
| HU (1) | HU187462B (cs) |
| RO (1) | RO85240B (cs) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3307552A1 (de) * | 1983-03-03 | 1984-09-06 | Hans Widmaier Fabrik für Apparate der Fernmelde- und Feinwerktechnik, 8000 München | Schaltung zur pfeifunterdrueckung bei fernsprechapparaten mit lauthoerverstaerker |
| DE3329476A1 (de) * | 1983-08-16 | 1985-03-07 | Telefonbau Und Normalzeit Gmbh, 6000 Frankfurt | Schaltungsanordnung zur einschaltung von steuereinrichtungen bei fernsprechapparaten |
| DE3505213A1 (de) * | 1985-02-15 | 1986-08-21 | Deutsche Fernsprecher Gesellschaft Mbh Marburg, 3550 Marburg | Schaltung in einem fernsprechapparat |
| DE4329638C2 (de) * | 1993-09-02 | 1996-10-24 | Telefunken Microelectron | Lauthöreinrichtung |
| DE29614668U1 (de) | 1996-08-24 | 1996-11-14 | Kroos, Heinz Thomas, 33129 Delbrück | Freisprecheinheit für Mobiltelefone (Handys) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL155700B (nl) * | 1971-12-08 | 1978-01-16 | Philips Nv | Luidsprekende telefooninrichting. |
| DE2607016A1 (de) * | 1976-02-19 | 1977-08-25 | Manfred Lau | Elektronischer telefonverstaerker |
| FR2376576A1 (fr) * | 1976-12-31 | 1978-07-28 | Girard J Philippe | Perfectionnements aux postes telephoniques a mains libres |
-
1980
- 1980-12-23 DD DD22657380A patent/DD154419A1/de not_active IP Right Cessation
-
1981
- 1981-07-27 DE DE19813129506 patent/DE3129506A1/de active Granted
- 1981-10-14 CS CS817525A patent/CS247107B1/cs unknown
- 1981-10-22 HU HU307581A patent/HU187462B/hu not_active IP Right Cessation
- 1981-12-22 CU CU35575A patent/CU21478A3/es unknown
- 1981-12-22 RO RO106073A patent/RO85240B/ro unknown
Also Published As
| Publication number | Publication date |
|---|---|
| CU21478A3 (en) | 1987-10-12 |
| CS752581A1 (en) | 1985-06-13 |
| RO85240A (ro) | 1984-09-29 |
| RO85240B (ro) | 1984-10-30 |
| DE3129506C2 (cs) | 1989-09-07 |
| DD154419A1 (de) | 1982-03-17 |
| DE3129506A1 (de) | 1982-07-01 |
| HU187462B (en) | 1986-01-28 |
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