In Reply to: RE: RH84 : CCS regulator drop out ... posted by Alex Kitic on January 22, 2015 at 14:06:53:
With B+ off the rectifier (UF4007 full wave) of 300VDC :
Total power output before clipping : 3W RMS
Gain = 6.36
THD = 2.43% @ 2.75W RMS measured with ARTA
2nd harmonic = -34.64dB, 3rd harmonic = -36.62dB ,
4th harmonic = -48.47dB, 5th harmonic = -55.28dB
60 cycle below -80dB, 120 cycle below -60dB
I failed to match the designers benchmark of 1% distortion at 4W RMS.
Perhaps deviations from the original design or using cheap AES PT-31 OPT's is a contributing factor.
That is it for now.
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Follow Ups
- RE: RH84 : updated measurements ... - deathtube 667 17:15:53 01/22/15 (0)