Posted by Tnuctipun [ 64.12.116.132 ] on March 05, 2005 at 18:54:30:

hey-Hey!!!,
It seems the amp has been settled upon. It will use the guinevere power Iron comfortably.

PP 1624's. this is a glass enveloped version of the 1619. Front end will be a cascode differential amp. One grid grounded so it will SE:PP phase split. One GZ34 rectifier, two 2.5V/2.5A Hammond filament TX's( or perhaps a 5vCT/2.5v-parallel connection with seperate 2.5v windings( PN TBD ). One L-C filter. The 10 Hy/300 mA Hammond is a likely suspect. Perhaps a custom Heyboer... OPTx will be a 10k a-a with g2 taps at 20 and 30%, perhaps 40% as well for future as yet undetermined application/experimentation.

CCS for the cathode of the input stage would be very similar to the Guinevere plate loads. Additional CCS for Ec2 ref would be LND150N3 based and similar construction.
regards,
Douglas

Replies:

• 1619's - Cheetah 16:08:20 03/07/05 (0)
• Re: the Amp - Wayne Parham 00:13:26 03/06/05 (0)
• Re: the Amp - manualblock 19:40:02 03/05/05 (9)
  • Re: the Amp - Tnuctipun 19:54:51 03/05/05 (8)
    • PCB for CCS - colinhester 20:50:51 03/05/05 (7)
      • Re: PCB for CCS - Wayne Parham 00:15:07 03/06/05 (0)
      • Re: PCB for CCS - Tnuctipun 21:37:39 03/05/05 (5)
        • Re: PCB for CCS - manualblock 06:46:21 03/06/05 (4)
          • T-220 mounting sockets - colinhester 07:16:27 03/06/05 (3)
            • Re: T-220 mounting sockets - manualblock 08:29:17 03/06/05 (2)
              • No minimum but a service charge - colinhester 09:55:14 03/06/05 (1)
                • Re: No minimum but a service charge - manualblock 10:05:12 03/06/05 (0)