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Tube DIY Asylum Do It Yourself (DIY) paradise for tube and SET project builders. |
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Tube DIY Asylum Do It Yourself (DIY) paradise for tube and SET project builders. |
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In Reply to: RE: Noise measurement posted by Paul Joppa on November 22, 2015 at 14:22:09:
"I would use batteries"
Yes, especially if the preamp will only see occasional use. Also, if one desires to make measurements down to DC, a split voltage source is required. Two 9V batteries are much less expensive than two regulated supplies. BTW, if two opamps with +30dB gain each are chained, only the first needs to be low noise. The second (and whatever follows) will have virtually no impact on the noise floor measurement.
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- RE: Noise measurement - Triode_Kingdom 15:45:56 11/22/15 (0)
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