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Electrocompaniet

2017-12-23 05:46  
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The Electrocompaniet 2 Channel Audio Power Amplifier

 

Electrocompaniet.gif (15315 bytes)

 

?? ???? ????? 25W ??? ?????? ,????? ? ??????? ????????? , ??????????? ?????????? ?????????? ??? ???????, ???? ??? ????????? ??????? ???????????? ?????? , ??? ??????? ?? ?????? ?? ??????? ?????? ????????? , ??????????? ??????. ??? ????????? ??? ?????????? ?????????? o J. Lostroh ,????? ? ???. Mati Otala ,??? ????? ? ?????? ??? ?????? ??? ??????????? ????????????? , ??????? ??? ?.?.? (Transient Intermodulation Distortion). ???????????? ?? ??????? ??? ???????? , ?? ????? ??? ????????? ?? ??????? ??????. ?? ???? ????? ????????? ??? ??????? ????????, ???????????? ??? ??????????? ????????? (?? ????? ?????????, ??? ??????????? ?????????????? ??? ?????? ???????? ?????????) ??? ?????????????? ????????? ???????? ??? ?? ??????? ?? ?????? ??????, ??? ????? ??? ???????? darligton ??????????????? ??????????. ???? ????? ????????? Q1, ??????????????? ?? BCY87 (Philips), ?? ????????? ?????????. ? ????????? ??????? R1 ??? ???????? ????? ???? ?????? 1.8? ,??? ?? ???????? ??? ???????? ??? ?????????? ???? ????? ?????? 47?-100?. ?? ??? ?????? ?????????? ????????? ?????????????? ??? ??? ????? ???????? Q2 ??? Q3 ZTX384 (Ferranti). ???? ???? ??? Q1 ??????????? ? ???????? ???????? ???? ??? R18, R2, R4. ??????? ???? ??? ??????? ????????????? (??????? ????????? , ??? ?????????? ??? ?????? ???????? ?????? ??????????), ??? ???????????? ??? ??? R5 ??? C2. ???? ??????? ????????? Q4- BCY89 (Philips), ????????? ?? ??????? TR1, ?? ?? ????? ?????????? ??? ????????? ??? ???????? ??? Q2, ???????????????? ???? ??? ?????? ???????? ????? ???? ????? ??? ????????. ?? ??????? ??? ????????? ???? ??? ??????? ??????????? ????????????? ??????? ??? 0.2mA ??? ??? ????? ??? 0.4mA ??? ?? ???????. To ????? ????????? ??? ??????????? ?? Q5-Q6, ?????????????? ?? ????? ??? ??? ???????? ???????? Q8-Q9 .?? ?????????? Q8-9 ???? ??????????? ??? ?????? ?????? ???????? ??? ? ?????????? ???? ??????? ??? ???????? ??? ??? ???????????? ??? ???????, ??? ?????????? ??????????? ?? ??????? ??? ??? ????? ??? ?????????? ???????? ??? ??????????? ??????? ?????????, ??? ????? ???????????? ?? ???????. ?? Q7 ??? TR2, ????????? ??? ?????? ??? ??????? ?????? (????? ???????), ?????????????? ?????????? ??? ??????? ????????? (?????????? ????????????) ??? ????????? ???? ???? ?????? ?? ?? ?????????? ??????. ?? ?????? ?????? ????? ??? ?????????????? ??????? Darligton, ??? ??????  . ??? ?? ?????????? ??????, ????? ???????? ????????? ??? ????? ??????? ??????? ?????? ??? ???????? ??????????? (60W,60V,8A), ??? ???? ???????? , ???? ????? ??? ???????????????. O? ?????? D4-5 ???????????? ??? ??????????????????? ???????? ?? ????? . ?? ??????? ??? ?????????? ???? ?? ???????? ,?? ????????????? ??????? , ????????????? ?? ???????. ??? ???? ?????? ??? ???????? ??? ??? ????? ?? ???????? , ????? ? ?????????? ??? ??? ?? ???? ?????????? ????? . ???? ?? ????? ?????? ????????????? ?? ??????????? ?????? 19V ??? -44V ??? ????? ???????????????? ??? ?? ?????? ?????? ?? /-26V, ??? ??? ????? ??????????????? . ????? ? ??????????? ????????? ??? ??????? ???????? , ???????????? ??? ?????????????? ??? ??? ??????????? ,??? ??????? . ? ????????? ??? ??? ??????? ?????? , ?????? ?? ????????? , ???? ?? ??? ????? ??????????? ????, ???????? ??? ??? ???? ???? ???????. [????: ???? 9/79-?. ?????????].

Part List

R1-3-19= 1.8KohmsR24-31= 2.2KohmsD1= 15V 0.5W Zener
R2= 10 ohmsR25= 2.7KohmsD2-3= 1N4148
R4= 12KohmsR28-29= 10 ohmsD4-5= BY206
R5= 120 ohmsR32-33= 56 ohmsQ1=BCY87(Philips)
R6-7-27= 1KohmsR34-35= 1  ohms/5WQ2-3= ZTX384(Ferranti)
R8-13= 2.7KohmsR36-37= 1  ohms/5WQ4=BCY89(Philips)
R9-10= 1KohmsR38= 1 ohms/ 3WQ5-6=BD140
R11-12= 33 ohmsC1-6-7= 100nF 100V PolyesterQ7-8-9=BD139
R14-15-20-21= 10 ohmsC4-5= 680nF 100V PolyesterQ10= BD139
R16= 3.3KohmsC2= 2.2nF 100V PolyesterQ11=  BD140
R17= 4.7KohmsC3= 2.5nF 100V PolyesterQ12-13=BD203
R18-26= 470 ohmsTR1= 220 ohms TrimmerQ14-15=BD204
R23-30= 1 ohmTR2= 1Kohms     TrimmerAll R is metal film 1% except R34-38

SPECIFICATIONS

OUTPUT POWER25W/8 ohm - 40W/4 ohm
DAMPING FACTOR160  [8 ohm]
INPUT IMPEDANCE1Kohm
SLOW RATE125V/?s
FREQUENCY RESPONSE1W/8 ohm   DC-1MHZ
THD0.01% 12.5W
TIM0.03%  12.5W
S/N100dB

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