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
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- CS
- Czechoslovakia
- Prior art keywords
- connection
- cbh3h
- resistor
- circuit
- resistors
- Prior art date
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Classifications
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- 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
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Amplifiers (AREA)
- Telephone Set Structure (AREA)
- Crystals, And After-Treatments Of Crystals (AREA)
Description
-1--1-
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CHman, cHHTMň c flHaroHaneň able 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 , bpeMa xax flHanaaoH aacTOT, πρηηη-MaeMoro cHrnana, onpeflenaionuin ocHOBHyw paaroBopHyio aacTOTy, ycHnHBaeTca nHHenHo. 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.3a CaeT BblSopa OTHOmGHHH BΠρΟΤΗΒΠβΗΗΗΗ B MOCTOBOH CXGMG ΒΠΗΗΗΗβ CXGMblpa3BGTBneHHH Ha Tpe6yeMyw pasCanaHCHpoBxy moctoboA cxeMbi npaxTHaecxH Heo-myTHMO. KoppGXTHpymeé 3ΒβΗΟ B COaeTaHHH C ΠΟΠΗΜΜ COnpOTHBnGHHeM BXOflOB 247,107 -3- yCHJIHTejIH ηρΗβΜΗΟΓΟ KaHSJía, aaBHCHMblM ΟΤ ypOBHH Β BblÓpaHHOM AKanaSOHeypoBHH, o6ecneMHBaeT 3φφεκτ cacaTHa tojibko ajih bwcokhx ypoBHeň, οτΕβτοτΒβΗ-Hux aa Β03ΗΗΚΗ0ΒβΗΗβ napa3HTHoň οβρβτΗοή CBH3H and ηηβκηθ ypoBHH Ha-He ofca sbisaeTca CKonbKo- HH6yflb cymecTBeHHoro uacTOTHon36npaTejn> Horo bjihhhhh.
BcneflCTBue saBUCHMoro ot ypobhh h nacTOTbi οφφβκτα, peajiBrayeMoro peme-ΗΗβΜ COrnaCHO Η3θ6ρθΤβΗΗΙ0, flJIH ΠρβΑΟΤΒρβΠξβΗΗΗ HBJíeHHň napa3HTHOft 06paTHoňCBH3H C03flaeTCH npesnOCbHlKa flJIH ΠρΗΜβΗβΗΗΗ yCTpoftCTBa HHflHBHflyaJIbHOň CBH“3H, oSnaflatomero 0οπβιιιημ ycHJienHeM b nepeflatomeM KaHane, πρκ HeaHaHHTenbHbixsaTpaTax Ha cxeMHo—TexHHHecKHe h aKycTHqecKHe cpeflCTBa h He Tpe6y»mero sa-Μβτκοή moujhocth fljia noflaBJíeHHa aapa3HTHoň ofípaTHoft cbhsh. ΠρΗΜβρ ocymecTBJíeHHH H3o6peTeHHH. Η3θ6ρβτβΗΗβ noHCHHeTCH noflpo6Hee Ha 4 npHMepax ero ocymecTBJíeHHH. HaΦηγ.1 noxasaHa npHHnHnHajibHaa cxeMa τβπεφοΗΗΟΓο annapaTa c ycTpoňcTBOMrpoMKorosopxmeň h HHflHBHflyanbHoň cbhsh.BcneflCTBue saBUCHMoro ot ypobhh h nacTOTbi οφφβκτα, peajiBrayeMoro PEME-ΗΗβΜ COrnaCHO Η3θ6ρθΤβΗΗΙ0, flJIH ΠρβΑΟΤΒρβΠξβΗΗΗ HBJíeHHň napa3HTHOft 06paTHoňCBH3H C03flaeTCH npesnOCbHlKa flJIH ΠρΗΜβΗβΗΗΗ yCTpoftCTBa HHflHBHflyaJIbHOň CBH "3H, oSnaflatomero 0οπβιιιημ ycHJienHeM b nepeflatomeM Kahan, πρκ HeaHaHHTenbHbixsaTpaTax Ha cxeMHo-TexHHHecKHe h aKycTHqecKHe cpeflCTBa h of He Tpe6y» mero sa-Μβτκοή moujhocth fljia noflaBJíeHHa aapa3HTHoň ofípaTHoft cbhsh. ΠρΗΜβρ ocymecTBJíeHHH H3o6peTeHHH. Θ3θ6ρβτβΗΗβ noHCHHeTCH noflpo6Hee Ha 4 npHMepax ero ocymecTBJieHHH. HaΦηγ.1 noxasaHa npHHnHnHajibHaa cxeMa τβπεφοΗΗΟΓο annapaTa c ycT least cTBOMrpoMKorosopxmen h HHflHBHflyanbHoň cbhsh.
IlOCJieflywnme pHCyHKH WUHOCTpHpyiOT HaCTOTHO3aBHCHMblft 3φφβκτ CJKaTHH npHΗ3ΜβΗβΗΗΗ OTHOnieHHH ΟΟΠρΟΤΗΒΠβΗΗή RV Β MOCTOBOft ΟΧβΜβ. IIpH 3TOM φΗΓ . 2 ΠΟ“xaabiBaeT xapaKTepHCTHxy np« hoctohhhom bxoahom ηηπρη»6ηηη τβπεφοΗΗΟΓο an-napaTa.IlOCJieflywnme pHCyHKH WUHOCTpHpyiOT HaCTOTHO3aBHCHMblft 3φφβκτ CJKaTHH npHΗ3ΜβΗβΗΗΗ OTHOnieHHH ΟΟΠρΟΤΗΒΠβΗΗή RV OC MOCTOBOft ΟΧβΜβ. IIpH 3TOM φΗΓ. 2 ΠΟ "xaabiBaeT xapaKTepHCTHxy np" hoctohhhom bxoahom ηηπρη »6ηηη τβπεφοΗΗΟΓο an-napaTa.
Ha Φηγ.3 npencTaBJíeHa xapaKTepHCTHKa b aaBHCHMocTH οτ βχοαηογο ypoBHaΤεηβφοΗΗΟΓΟ annapaTa, a Ha Φηγ.4 - KpHBaa KOMneacanKH. ÍIpHHUHnHanbHajj cxeMa τβπεφοΗΗΟΓο annapaTa c ycTpoňcTBOM rpoMKoroBopameňh HHOHBHnyanbHOň cbh3h no Φηγ.1 coctoht H3 HSBecTHOň cxeMbi paaBeTBneHHH,oÓpasyeMoft 6anaHCHoň cxeMoň N peencTopaMH R1 h R2 η ποηημμ conpoTHsneHH-gm, oeycnoBneHHUM noflKmoaeHHeM coeflHHHTenbHbix npoBOflOB Ha xima, b. Πρκ3TOM B CXeMy ρβ3ΒβΤΒΠβΗΗΗ H3BeCTHblM O0pa3OM ΒΚΠΜΗβΗ ΜΗΚρθφθΗ MÍ. 3β ΟΗβΤnapannejiEHoro noflKmoqeHHH nocneflOBaTenbHoň nenoHKH pe3HCTopoB R3 ... R5κ pe3HCTopaM R2, R1 cxeMU paaBeTBneHHa peanH3yeTCH MOCTOBaa CxeMa, β κοτο-ροή b oTBone nonsyHKa noTeHUHOMerpa R4 h cosflaeTca τοηκβ npHcoeflHHeHHa DflHaroHaneft mocts, a τοηκβ coeflHHeHHa pe3HCTopoa R1, R2 npeflCTasnaéT coCoňflpyryio Toaxy npHcoeflHHeHHa B flHaróHaneň moct a. Ha τοκκγ npHcoeflHHeHHa Btiepes peaHCTop R6 h KOHfleHcaTop C2 ποηκπωπεΗ HHBepTHpywnmň Bxofl (-) ycwm-TejjH npHeMHoro Kaaana A, a κ oTBofly nonsyHKa ποτβΗμΗΟΜβτρβ R4 aepea koh-neHcaTop C1 - HeHHBepTHpyonHň bxoa (+) ycunHTena β πρκβΜΗΟΜ Kanóne A. Κ τοΗΚβ npHcoeAHHeHHx Β h τοηκβ coeflHHeHHa pesncTopa R6 c KOHfleHcaTo-poM C2 ποβκπιοΗβΗο, Kpowe Toro, HacTHosaBHCHMoe KoppeKTHpyioqee 3Ββκο K,CBHsaHHoe τβκκε c onopHQíi τοηκοή cxeMbi. *Ha .3ηγ.3 npencTaBJíeHa xapaKTepHCTHKa b aaBHCHMocTH οτ βχοαηογο ypoBHaΤεηβφοΗΗΟΓΟ annapaTa, and Ha Φηγ.4 - KpHBaa KOMneacanKH. ÍIpHHUHnHanbHajj cxeMa τβπεφοΗΗΟΓο annapaTa c ycTpoňcTBOM rpoMKoroBopameňh HHOHBHnyanbHOň cbh3h well Φηγ.1 coctoht H3 HSBecTHOň cxeMbi paaBeTBneHHH, oÓpasyeMoft 6anaHCHoň cxeMoň peencTopaMH N R1 R2 H-η ποηημμ conpoTHsneHH gm oeycnoBneHHUM noflKmoaeHHeM coeflHHHTenbHbix npoBOflOB maxima Ha, b. Πρκ3TOM B CXeMy ρβ3ΒβΤΒΠβΗΗΗ H3BeCTHblM O0pa3OM ΒΚΠΜΗβΗ ΜΗΚρθφθΗ ME. 3β ΟΗβΤnapannejiEHoro noflKmoqeHHH nocneflOBaTenbHoň nenoHKH pe3HCTopoB R3 ... R5κ pe3HCTopaM R2, R1 cxeMU paaBeTBneHHa peanH3yeTCH MOCTOBaa CxeMa, β κοτο ροή-b oTBone nonsyHKa noTeHUHOMerpa 4 h cosflaeTca τοηκβ npHcoeflHHeHHa DflHaroHaneft mocts and τοηκβ coeflHHeHHa pe3HCTopoa R1, R2 npeflCTasnaéT coCoňflpyryio Toaxy npHcoeflHHeHHa B flHaróHaneň and able. Ha τοκκγ npHcoeflHHeHHa Btiepes peaHCTop 6 h KOHfleHcaTop C2 ποηκπωπεΗ HHBepTHpywnmň Bxofl (-) ycwm-TejjH npHeMHoro Kaaana a and κ oTBofly nonsyHKa ποτβΗμΗΟΜβτρβ R4 AEPE KOH neHcaTop C1 - HeHHBepTHpyonHň bxoa (+) ycunHTena β πρκβΜΗΟΜ canyon A. κ τοΗΚβ npHcoeAHHeHHx Β h τοηκβ coeflHHeHHa pesTc R6 c KOHfleHcaTo-poM C2 ποβκπιοΗβΗο, Kpowe Toro, HacTHosaBHCHMoe KoppeKTHpyioqee 3Ββκο K, CBHsaHHoe τβκκε c onopHQii τοηκοή cxeMbi. *
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 .OnopHaa TOHKa coenHHeHa c rpoMKoroBopHTeneM Lep, flpyro buboa κοτοροτοCBH3HH C BUXOAOM yCWIHTeJia Β npHeMHOM KHHajie A, H C KHJIOft and 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 Cumana CHHMaeMbiílc τοπεκ npHcoeflHHeHHa B, D, h Bosmncaranift aa Caeté npeflHaMepeHttoft pasOanaH-CHPOBKH MOCTOBOft CXCMbi Π OJI THUNDER nOTeHflHOMeTpa y 3 R 4, C noflaeTCH HHCTOTHOňκορρβκΑΗβή aepe9 KoppeKTupywmee seeHo K on Bxoflbí ycHnirrene npHe Kahan B-WA A. Ecjih aa exoflu ycunHTena β Kaaane npHeMa A «smitest cxeMy c paajiHHHbíMHOTHomeHHBMH conpoTHBneHHň RV KoTopue nonynaioTČa H3 oTHomeHHH cyMMU UAC-τηηηογο conpoTHBneHna noTeHAHOMerpa R4 R5 H conpoTHBneaHa pesHCTopa κ οβ-memes conpoTHBJíeHHio pesncTopoB R3 ... R5 noflaBaTb nocToaHHoe BxoflHoe on-npaxeHne τβηβφοΗΗΟΓο annapaTa , to cosflaeTca npeflnoHTHTeJibHbift 3φφβκτ cxa-THa. 3aBHCHMoCTb ypoBHH P rpoMKOCTH npHeMa flna nacTOT £ 300 Γιχ 1 and H f2> 2700 Γη οτ HasBaHHoro Bbíme oTHomeHHa conpoTHBJíeHnň npencTSBJíeHa aaΦηγ.2, nptraeM nacTOTa 2 £ 2700 Γη HBJíaeTca κρΗΤΗΗβοκοή nacTOToň caMOBO3-247107 and 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 Η3θ6ρεΤ8ΗΗΗHa Φηγ.3 noKaaaH cxanox ypoBHH δΡ «South TpaHcnanHH περε3 γρομχογοβορη-Ha tenbi Bbixone ycnnHTena b πρηομηομ xaHajio A πρκ noBbinieHHH ypoBHH Ha10 FLB OTHOCHTOJlbHO HOpMajIbHOrO ypoBHH 0 FLB BXOflHOrO HanpHX8HHH ΤεπεφΟΗ-Horo annapaTa b 3aBHCHMOCTH rpm 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. .4ηγ.4 Ha πρΗΜερε pa3Hn ~ Hbi HacTOTHO3aBHCHMbix cxanxoB ypoBHH & P επξε pa3 3πχΗοετρΗργετ 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 y CH-Π8ΗΗ8Μ Β ΠερεββΚΜξεΜ KaHaJIB, KOTOPH8 p8aJIH3yWTCH H3B8CTHHM o6pa3OM npOCTbl-MH CX8MHO-T8XHHHeCKHMH H axyCTHHOCKHMH CpeflCTBaMH and T3KX8 BbHlOJlH8HH8ΤρεδΟΒβΗΗΗ K nOJIHOMy HCnOJIb3OB3HHK) OTĎHpaeMOň OT aεπεφΟΗΗΟΖ CTaHUHH MOnj-: HOCTH flJIH yCHJWHHH Π ΠρΗβΜΗΟΜ XaHaJie H TpaHCJIHlHH H8P83 ΓρΟΜΧΟΓΟΒΟΡΗΤβΗΒ, and Taxxe ajih ycHJieHHH β do not ignore 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.Cx8Ma τεπεφοΗΗΟΓΟ annapaTa c h ycTpoůcTBOM rpoMKoroBopameň ηηαηβηηυ-aJIhHOH CBH3H C npoBOflHblM ΠΗΤ3ΗΗ8Μ H OTflOJlbHblMH yCHJIHTejIHMH Β ΠρΗβΜΗΟΜ HnepeflaiomeM xaHanax 6ε3 flonojiHHTenbHbix βεΜπφΗργκχηΗχ 3BOHb8B b sthx xaHanax, oTJiHHaioniaflCH that HTO napajinojibno p83HCTOpaM κ (R 1, R 2) Η3βεετΗοήCXCMhl pa3B8TBJI8HHfl BKJnOH8H3 nOCJI8flOBaT8JIbHaH Ι ^ εΠΟΗΚΗ peaHCTopoB (R3 ... R5) xoTopwe b cepepjme o6pa3y »T Tonxy npncoep, imemifi (D) fíuaroaaneň can, flpyroň TOHKoň npHcoenHHOHHH (Β) χοτορωχ hbjihctch cooahhohho ρβ3ΗοτοροΒ (R 1, R 2) C H3BeCTH0H CXeMbl ρ33ΒβΤΒΠβΗΗΗ 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 npHCOeflHH8HHH (B), nonyqaa May H3 coBM8CTHoro BKJitoneHHH pe3HCTopos (R 1, R 2) paa-BeTBJlHlOmeH CXeMbl C ΜΗΚροφΟΗΟΜ (M), BB8fl8H P83HCTOP (R 6), ΟΠΟρΗβΗ TO.H ”x and xoppaxTHpyramoro 3BeHa (K) CBHaaHa c h3B8cthoh pasBeTBJiHtoeaeil cx8Mo.
AHHOTaUHHAHHOTaUHH
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.CXAM τεπεφοΗΗΟΓΟ annapaTa ycTpoiicTBOM rpoMXoroBopamoň c h HH «HBnny-anbHoň CBH3H o6ppy # Obah b nacTHocTH, fljiH panHOHajiHaanHH ynpaBJíeHHOCxoňpa6oTbi yxjiaflbiBaaMoň Ha xopnyc ΜΗκροτεπβφοΗΗΟΗ Tpy6xoň η ΓρόΜχοΓΟΒορκτε-ji8M. ΙίεπΒ Η3ο6ρετεΗΗΗ coctoht b that hto6m cosflaTb cxBMy τεηεφοΗΗΟΓΟ an-voltage C nROBOflHblM nHTaHHOM HC ycTpoiicTBOM rpOMKOrOBOpnmaň H HHAHBHfly-aJIbHOň CBH3H, KOTOpaH ΠρΗ MHHHMajIhHhlX 3aTpaTaX npeflOTBpamaeT BO3HHXHOB8-HH8 napasHTHoií oSpaTHoň CBH3H M8Hwy CTopoHOit περεηβΗΗ η ετοροΗοή npHOMa and Taxx8 rapaHTHpyBT xopomHe napaMeTpbi nepenann πρκ 6fromHHe πηηηηCBH3H. Πρκ 3T0M CTaBHTCH 3anana yCTpaHGHHH H8flOCTaTXa H3B8CTHblX yCTpOňCTBrpOMXOrOBOpnmaň η HHflHBHnyaJIbHOft CBH3H, XOTOpblft 3aXJH0Ha8TCH B TOM UTOHa noflaBJíeHHa napasHTHoň oČpaTHoft cbhsh AATP HBaeTCJi saMeTHaa uacTb ^ rt-rt 6hp38moh τεηεφοΗΗοϋ CTaHijHH MOQ hocth h ^ HTO, πομημο 3Toro, orpaHHUHBa- 247107 5 flnHHa etch 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 247107CornacHO Η3οβρβτβΗΗ »3anana pemaeTca τθμ, ητο b HseecTHoň cxeMe waist-BeTBJíeHHH paaMemeHa μοοτοβηη cxeMa, κοτορβΗ pa36anaHCHpyeTCH c aaBHCHMO' CTbJO OT-ypOBHa M8CT0TM KOPpeKTMpyKSUHM 3ΒβΗ0Μ H, C COeflHHeHHbJM flUarOHaJIH" mm can. CurHan, οηητμΛ c h nuaronajieň able noaaHHbiň Ha ycHJiHTenb npHfeMHoro KanaJia c πομοπιβιο KoppexTHpyiomero 3βθ, ηη h npn HcnonbsoBdHHH xapax-TepHCTHKH noJiHoro conpoTHBjíeHHH BxoflOB nocnenyrotnero ycHJiHTena πρπβΜΗΟΓΟKaHajia πομτη Ces HCKaxeHHň cxHMaeTca c nacroTHoň H36MpaTenbHocTbio b flHa-naaoHe bmcokmx nacTOT b it SPEM XAX «« anasoH nacTOT npHHHMaeMoro CH-Toan, onpenenaiomHň ocHOBHy »pa3roBopHyio o OT OT 3 3 3 3 3 Π Π Π Π Π Π Π Π Π Π Π Π Π 3 3 3 3 3 3 3 3 3
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DD22657380A DD154419A1 (en) | 1980-12-23 | 1980-12-23 | CIRCUIT ARRANGEMENT FOR A TELEPHONE DEVICE WITH MITHOER AND HANDSFREE DEVICE |
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 (en) |
CU (1) | CU21478A3 (en) |
DD (1) | DD154419A1 (en) |
DE (1) | DE3129506A1 (en) |
HU (1) | HU187462B (en) |
RO (1) | RO85240B (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3307552A1 (en) * | 1983-03-03 | 1984-09-06 | Hans Widmaier Fabrik für Apparate der Fernmelde- und Feinwerktechnik, 8000 München | Circuit for howl suppression in telephone sets with loudspeaker amplifiers |
DE3329476A1 (en) * | 1983-08-16 | 1985-03-07 | Telefonbau Und Normalzeit Gmbh, 6000 Frankfurt | Circuit arrangement for switching on control devices of telephone sets |
DE3505213A1 (en) * | 1985-02-15 | 1986-08-21 | Deutsche Fernsprecher Gesellschaft Mbh Marburg, 3550 Marburg | Circuit in a telephone apparatus |
DE4329638C2 (en) * | 1993-09-02 | 1996-10-24 | Telefunken Microelectron | Loudspeaker |
DE29614668U1 (en) | 1996-08-24 | 1996-11-14 | Kroos, Heinz Thomas, 33129 Delbrück | Hands-free unit for mobile phones |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL155700B (en) * | 1971-12-08 | 1978-01-16 | Philips Nv | SPEAKING TELEPHONE DEVICE. |
DE2607016A1 (en) * | 1976-02-19 | 1977-08-25 | Manfred Lau | Telephone amplifier for both voice and call bell - has analog delay line to prevent acoustic feedback and transistor bell signal amplifier |
FR2376576A1 (en) * | 1976-12-31 | 1978-07-28 | Girard J Philippe | ADVANCED HANDS-FREE TELEPHONE STATIONS |
-
1980
- 1980-12-23 DD DD22657380A patent/DD154419A1/en not_active IP Right Cessation
-
1981
- 1981-07-27 DE DE19813129506 patent/DE3129506A1/en active Granted
- 1981-10-14 CS CS817525A patent/CS247107B1/en unknown
- 1981-10-22 HU HU307581A patent/HU187462B/en not_active IP Right Cessation
- 1981-12-22 RO RO106073A patent/RO85240B/en unknown
- 1981-12-22 CU CU35575A patent/CU21478A3/en unknown
Also Published As
Publication number | Publication date |
---|---|
CS752581A1 (en) | 1985-06-13 |
CU21478A3 (en) | 1987-10-12 |
HU187462B (en) | 1986-01-28 |
RO85240A (en) | 1984-09-29 |
DE3129506A1 (en) | 1982-07-01 |
RO85240B (en) | 1984-10-30 |
DE3129506C2 (en) | 1989-09-07 |
DD154419A1 (en) | 1982-03-17 |
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