7119/7044/5687 Single Stage Differential Push-Pull Headphone Amplifier

     IN>--+            +------+          
          |            P      |          
        VR50K<--+--G<E182CC>  |  8K  8   
          |     |      K      +---++++--+-->OUT
          |   R560K    |          ||||  |
          |     |      |          ||||  |
          ~     ~      |          ||||  |
                       |     B+>--+||| R27/1W
      +-A<LM317T>I-----+          ||||  |
      |     O    <-25mA|          ||||  |
      +-R51-+          |          ||||  |
      |                K      +---++++--+-->OUT
      ~         +--G<E182CC>  | ITPP-3W |
                |      P      |         ~
                |      +------+
                |0
                ~

Ep=110V Ip=12.5mA Rp=4K Eg=-3.5V

   +-SW-+     100V    (128V)                           (115V)
>--+-SK-+--++++--+->|-+--R20/1W--+--R120/2W-+--R120/2W-+-->B+
        |  ||||  +-|<-)+         |          |          |
AC100V  |  ||||       ||     C100/160   C100/160   C100/160
        |  ||||  +->|-+|         |          |          |
>------+)--++++--+-|<--+---------+----------+----------+--<E
       || Z-02ES      (0V)                             (0V)
       ||                                              
       ||                                              
       ||                                              
       ||     6.3V
       |+--++++----+--+
       |   ||||    |  | HEATER
       |   ||||    >  > 640mA*2(7119)
       |   ||||    |  | 900mA*2(5687,7044)
       +---++++----+--+
           J632    |
                   ~

(2002.11.07 02:15)