Posted by Tnuctipun [ 172.149.52.152 ] on March 05, 2005 at 12:30:00:

In Reply to: Guinevere - Next step? posted by colinhester on March 05, 2005 at 11:21:05:

I would suggest battery bias of the CCS plate loads. 2x 3.3V Li-Ion button cells, perhaps 3 of them. You'll need to add cathode-cathode connected 18V 500 mW zener diode pairs to protect the gate-source voltage limit of +/- 20V. A good .033-.1 uF capacitor to R-C decouple the batteries from the gate is also recomended.

at 2x bateries, R-3 is ~910 R. With 3x it goes to ~1k2 Ohms.

Enjoy for a bit...don't tweak too quickly. How are you guys fixed for gain?
rgards,
Douglas

Replies:

• Re: Guinevere - Next step? - colinhester 13:30:13 03/05/05 (7)
  • Re: Guinevere - Next step? - manualblock 14:59:44 03/05/05 (1)
    • oeps.... - Tnuctipun 20:40:30 03/06/05 (0)
  • Re: Guinevere - Next step? - Tnuctipun 13:59:11 03/05/05 (4)
    • Re: Guinevere - Next step? - colinhester 18:25:09 03/05/05 (3)
      • 12B4's - Tnuctipun 18:37:41 03/05/05 (0)
      • Re: Guinevere - Next step? - Tnuctipun 18:34:45 03/05/05 (0)
      • Re: Guinevere - Next step? - manualblock 18:26:08 03/05/05 (0)