07-08-2014, 01:10 PM
"In multiple listening tests, with
different participants and at various locations around the country, the negative effects of even the best film
and foil polystyrene DC blocking input capacitors in the audio signal path was confirmed. It is therefore
recommended that DC blocking capacitors not be used in the signal path for mid to high-end audio
equipment. Where DC offset from another signal source may be a problem then the use of a DC servo
circuit that keeps DC offset from appearing at the output of the amplifier is recommended."
To kazu inzinjeri iz TI-a.
"Because the enclosure design was small, the close proximity of the two toroidal transformers to the circuit
board necessitated shielding both transformers with “Mu-Metal” for best performance. The Mu-Metal
mitigates the field interference generated by the transformers to the sensitive circuits on the amplifier
printed circuit board. Toroidal transformers already have low radiated fields when compared with iron core
transformers, but are more costly. Toroidal transformers are used extensively in high end audio equipment
for their low radiated magnetic field characteristic. However, even with the lower level magnetic fields that
they radiate, problems can still occur when trying to achieve the lowest possible distortion and noise. MuMetal type shielding is only effective when it makes a complete loop around the entire perimeter of the
toroidal transformer but it does not need to be grounded to be effective."
Da li ovo obican smrtnik iz Srbije moze da izvede po nekoj pristojnoj ceni. Za MuMetal sam prvi put cuo kod Lundahl transformatora, a sad vidim i da ga spominju i u ovom dokumentu.
Inace to je AN-1490 koji je prepun korisnih informacija nevezano za temu same AN.
different participants and at various locations around the country, the negative effects of even the best film
and foil polystyrene DC blocking input capacitors in the audio signal path was confirmed. It is therefore
recommended that DC blocking capacitors not be used in the signal path for mid to high-end audio
equipment. Where DC offset from another signal source may be a problem then the use of a DC servo
circuit that keeps DC offset from appearing at the output of the amplifier is recommended."
To kazu inzinjeri iz TI-a.
"Because the enclosure design was small, the close proximity of the two toroidal transformers to the circuit
board necessitated shielding both transformers with “Mu-Metal” for best performance. The Mu-Metal
mitigates the field interference generated by the transformers to the sensitive circuits on the amplifier
printed circuit board. Toroidal transformers already have low radiated fields when compared with iron core
transformers, but are more costly. Toroidal transformers are used extensively in high end audio equipment
for their low radiated magnetic field characteristic. However, even with the lower level magnetic fields that
they radiate, problems can still occur when trying to achieve the lowest possible distortion and noise. MuMetal type shielding is only effective when it makes a complete loop around the entire perimeter of the
toroidal transformer but it does not need to be grounded to be effective."
Da li ovo obican smrtnik iz Srbije moze da izvede po nekoj pristojnoj ceni. Za MuMetal sam prvi put cuo kod Lundahl transformatora, a sad vidim i da ga spominju i u ovom dokumentu.
Inace to je AN-1490 koji je prepun korisnih informacija nevezano za temu same AN.