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Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ. |
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Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ. |
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In Reply to: Dual Power Supplies in Preamps and Electronic Crossovers posted by ccd on July 28, 2000 at 05:37:14:
I'm not sure if by "dual power supplies" you mean dual polarity such as +15V and -15V. Assuming this is what you mean, one of the primary reasons is to avoid coupling capacitors on the input and output. With only single polarity supplies you have no chance to direct couple since a DC offset is always present. You are also faced with using psuedo-grounds as reference points to keep the circuit "centered" between the power supply voltage and ground so that it can produce both positive and negative voltage excursions. The psuedo-ground must be somehow derived from the power supply voltage so is subject to noise.Dave
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Follow Ups
- Re: Dual Power Supplies in Preamps and Electronic Crossovers - Dave I 10:06:31 07/28/00 (5)
- Re: Dual Power Supplies in Preamps and Electronic Crossovers - ccd 10:43:16 07/28/00 (4)
- Re: Dual Power Supplies in Preamps and Electronic Crossovers - Dave I 11:05:27 07/28/00 (3)
- Re: Dual Power Supplies in Preamps and Electronic Crossovers - rcrump 13:09:07 07/28/00 (2)
- Re: Dual Power Supplies in Preamps and Electronic Crossovers - Dave I 15:34:45 07/28/00 (1)
- Re: Dual Power Supplies in Preamps and Electronic Crossovers - rcrump 16:42:33 07/28/00 (0)
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