Samsung | Hi-Fi.ru
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  1. #151

    13.04.2008
    2,198
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  2. #152

    25.06.2007
    530

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    ; 04.06.2018 06:53.
    youtube TheBankAudio

  3. #153

    27.03.2006
    15,645

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    88 -32,5, S-10, Ri-3,25k.
    , 4,7 7/32 .
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    ; 04.06.2018 08:11.
    , ... , . mailto:gegen48(dog)mail.ru

  4. #154

    04.01.2006
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    1,174
    47

    0,47, 50 6,8, . -, 6.
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    ...BFG 9000>>>IDKFA...

  5. #155

    27.03.2006
    15,645

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    . - 0,1 7 , , Ra=0,7, Ri=3,2k.
    3,2/0,7=4,57+1=5,57 -15
    ; 04.06.2018 10:06.
    , ... , . mailto:gegen48(dog)mail.ru

  6. #156

    13.04.2008
    2,198
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    220/15 , , .
    ; 04.06.2018 10:45.

  7. #157

    25.06.2007
    530

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    youtube TheBankAudio

  8. #158

    09.06.2007
    ., 25 -
    446

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  9. #159

    04.01.2006
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    1,174
    47

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    ...BFG 9000>>>IDKFA...

  10. #160

    13.04.2008
    2,198
    2

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:	117 
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ID:	212426  

    ; 05.06.2018 00:39.

  11. #161

    13.04.2008
    2,198
    2

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  12. #162

    27.03.2006
    15,645

    1940
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  13. #163

    25.06.2010
    563

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    CHEL_EV; 11.06.2018 21:34.
    . 8-908-050-66-86

  14. #164

    27.03.2006
    15,645

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    1. , , 1 , 3-4 , 10 - 200-300 R3, 100-150 R17.
    2. 6, 7, 8, 9 100 -6 16, 0,33, 0,5.
    3. . 1, R14 1000 /50, +40
    4. 1 100-200, 2 5 50-100.
    30.

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    ; 12.06.2018 10:06.
    , ... , . mailto:gegen48(dog)mail.ru

  15. #165

    27.03.2006
    15,645

    , , .
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:	237 
:	174.8  
ID:	212901  

    ; 23.06.2018 11:33.
    , ... , . mailto:gegen48(dog)mail.ru

  16. #166

    25.06.2010
    563

    10, 1965


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:	295 
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ID:	212905
    . 8-908-050-66-86

  17. #167

    20.01.2008
    Kiev
    274

    . , . . , 3, 1956 . .20-23.
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:	171 
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:	212 
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ID:	213101    . 

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:	202 
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ID:	213102

  18. #168

    27.03.2006
    15,645

    .
        . 

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:	242 
:	265.1  
ID:	213293  

    , ... , . mailto:gegen48(dog)mail.ru

  19. #169

    28.09.2012
    .,
    669

     Ten Watt Valve Amplifier

    Elektor: Ten Watt Valve Amplifier With Just Four Valves
    This amplifier design was published in Elektor Electronics 114 of November, 1984.
        . 

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:	102 
:	89.5  
ID:	213479
    In common with many of our designs, all the components, except for the transformers, fit onto a single printed circuit board.
    Of late (1984) there seems to be a renewed interest among audio enthusiasts for valves. Valve amplifiers are 'in'. Those in the know now say, as, indeed, they always have, that valves sound better than transistors. The fact that we have designed a valve amplifier does not necessarily mean that this is our opinion. Appreciation of sounds is, in any case, purely a personal matter so everybody simply has to decide what he personally prefers. That is now very easy, at least for anybody who builds this 'good-old-fashioned' amplifier it is.
    Specifications
    Nominal output power: 10 watt into 4, 8 or 16 ohm
    Maximum output power: 12 watt harmonic distortion: 0.5% (50 Hz - 20 kHz)
    Signal/noise ratio: depends on individual circumstances
    Input sensitivity: 200 mV RMS
    Input impedance: 1 MΩ
    Damping factor: 25
    Frequency characteristic: 20 Hz. - 40 kHz 1 dB (at 1 watt)
    Feedback: about 26 dB

        . 

:	art008b.jpg 
:	279 
:	280.0  
ID:	213481
    The circuit diagram for this amplifier is very unusual for Elektor. The reason for this is, of course, the fact that it contains four valves. Note that the values of C2 and R4 depend on the impedance of the loudspeaker used.

    Resistors:
    R1, R8 = 1 MΩ 0.25 W
    R2 = 1 kΩ, 0.25 W
    R3 = 100 Ω, 0.25 W
    R4 = see figure 2
    R5, R11, R12 = 100 kΩ, 0.5 W
    R6 = 3k9 Ω, 0.25 W
    R7 = 68 kΩ, 0.5 W
    R9 = 180 kΩ, 0.5 W
    R10 = 33 kΩ, 0.5 W
    R13, R14 = 820 kΩ, 0.25 W
    R15, R16 = 4k7 Ω, 0.25 W
    R17, R18 = 270 Ω, 1 W (carbon)
    R19, R20 = 47 Ω, 1 W (carbon)
    R21 = 1 kΩ, 0.5 W
    Capacitors:
    C1 = 10 μF 16 V
    C2 = see figure 2
    C3 = 330 pF (polyester)
    C4, C7, C8 = 100 nF 400 V
    C5, C6 = 10 μF 50 V
    C9, C10 = 47 μF 25 V
    C11, C12 = 50 μF 450 V (may be combined in a single package)
    Semiconductors:
    D1 - D4 = 1N4007
    Valves:
    V1 = EF86
    V2 = ECC83
    V3, V4 = EL84
    Miscellaneous:
    F1 = fuse, 1 A slow blow (with holder)
    S1 = double-pole mains switch
    Tr1 = output transformer for 2 x EL84, primary: 2 x 4 kΩ preferably with screen grid tap-off points: secondary: 4, 8, or 16 Ω
    Tr2 = mains transformer; 250 V at 75 mA and 6.3 V at 2 A
    4 off B9A socket for valves
    1 off phono socket (for input)
    2 off output sockets (eg wander plug type)
        . 

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:	100 
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ID:	213482    . 

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:	110 
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ID:	213483
    ; 13.07.2018 10:11.

  20. #170

    27.03.2006
    15,645

    63.

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:	311 
:	148.8  
ID:	213858  

    ; 31.07.2018 03:46.
    , ... , . mailto:gegen48(dog)mail.ru

  21. #171

    04.09.2005
    .
    221

    , .
    88 -32,5, S-10, Ri-3,25k.
    , 4,7 7/32 .
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    Old Rat; 08.08.2018 09:30.

  22. #172

    27.03.2006
    15,645

    , 2. "" () 1968.
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    "-62".
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:	189 
:	236.5  
ID:	215035  

    ; 07.10.2018 10:25.
    , ... , . mailto:gegen48(dog)mail.ru

  23. #173

    27.03.2006
    15,645

    1939.
        . 

:	radiotron_AWA A503 circuit_2.jpg 
:	149 
:	197.6  
ID:	215799  

    , ... , . mailto:gegen48(dog)mail.ru

  24. #174

    25.06.2010
    563


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    - 66 in triod c 0,01, 10.
    2, , - Raa=4k Ra 1, .
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    . 8-908-050-66-86

  25. #175

    27.03.2006
    15,645

    , , Raa-8k, Ra-2k; .
    , ... , . mailto:gegen48(dog)mail.ru


 

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    : 14.03.2018, 19:51
  2. .
    U.L.F. , ,
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    : 63
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  4. 40-50
    vadim
    : 25
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  5. DSD , ,
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