Posted by colinhester [ 65.186.5.10 ] on February 26, 2005 at 13:01:34:

Got the 5687 heater fired up last night. Man, that sure is a pretty sight. I'm using the RCRC filter (2 ohm and 1 ohm in lieu of 5 and 3, respectively - see link below) I measured the voltage and got 13.4VDC. This is supposed to run at 12.6 VDC. Do I need to pad the voltage back, or is this really that critical? I am within 10%. I know this will somewhat shorten tube life due to more heat being generated, but other than that are there any issues I can expect (ie., noise / hum.)

Guinevere should be singing tonight!!!!!!!Colin

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Replies:

• Re: 5687 heater voltage - what's too high - Wayne Parham 16:00:40 02/26/05 (0)
• Re: 5687 heater voltage - what's too high - Forty2wo 13:37:31 02/26/05 (5)
  • Measuring current - colinhester 13:43:44 02/26/05 (4)
    • heater Voltage - Tnuctipun 13:57:33 02/26/05 (3)
      • 2 and 2 it is - colinhester 14:05:31 02/26/05 (2)
        • Re: 2 and 2 it is - Tnuctipun 14:13:13 02/26/05 (1)
          • Re: 2 and 2 it is - colinhester 14:23:41 02/26/05 (0)