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Old 10th July 2012, 04:56 AM   #1
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Join Date: Apr 2002
Default Do batteries still rule?

Hi, I powered my light dependant resistor pre-amp (LDR lightspeed) off a 12V battery (deep cycle lead acid) and found that it sounded better (more seperation of instruments, voices, etc).
Prior to this, I was using either a ALW super reg or the Teddyreg. So I'm thinking of making the battery supply permanent, which of pcurse leads to two questions:
1. Is it still the case that batteries exceed the performance of discrete regulators?
2. What would be the best recharging circuit for the lead acid battery?

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Old 10th July 2012, 06:14 AM   #2
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Location: Cascais
Not sure why you compare batteries to regulators. After all the complete mains PS involves transformers and rectifiers and these need to be optimised before serious comparisons are done. Clearly regulators don't do much, if anything for the RF in the mains.

Not many diy projects also involve some of the more advanced rectification solutions, like synchronous or mains-isolated rectification. Surely there is room for improvement there.

So, yes, batteries still offer an easy solution. Probably not lead acid since Lifepo4 batteries are widely available.
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Old 10th July 2012, 07:19 AM   #3
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Thx analog_sa. So, any suggestions on mains-isolated rectification?
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Old 11th July 2012, 11:30 AM   #4
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Been thinking of building something alone these lines

but probably using a micro

Too many projects atm
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