Posted by Tnuctipun [ 64.12.116.14 ] on February 02, 2005 at 08:29:12:

In Reply to: Re: Presenting.... posted by Wayne Parham on February 02, 2005 at 08:05:19:

Rev 1. bi-polar PS 5687 foreplay. +/- 180V supplies for a bigger cathode load on the output buffer cathode follower.

Rev 2. CCS on the amplifier plate, then cathode folower, then back to the plate. Still cathode-follower output.

Rev 3. Eliminated the CF, and ran the mu-follower CCS like Guinevere

Rev 4. new chassis, shunt regulated PS. small C, C-L-C, 3x 0C3 and a 12SN7 amplifier triode.

Rev 5. new chassis, Hg-vapour rectified( 816's ), choke input supply and 2x VR150/0D3 shunt regulator strings for each channel. L-C filter for filament DC as well. 8BD octal plug for the twin triode. Direct 12SN7 but with adapters 12B4A was best fitted to system gain structure.

Rev 6. is the valve CCS I developed at Wayne's sugestion. unregulated L-C power supply with damper diodes.

Rev 7. plans..increase B+ to mid 500's and use the DHT 10Y as the amplifier valve. More DC filaments...
regards,
Douglas

Replies:

• Re: Presenting.... - Wayne Parham 09:36:51 02/02/05 (2)
  • Re: Presenting.... - Tnuctipun 09:50:56 02/02/05 (1)
    • Re: Presenting.... - Wayne Parham 10:09:01 02/02/05 (0)