EH,EH....
Hi,
While not adressed at my idea...it confirms my thinking...
Ta,
Hi,
Apart from the floating charging circuit your proposal is ideal (well, apart from bias stability).
While not adressed at my idea...it confirms my thinking...
Ta,
Batteries and PSRR
Batteries are great not because they are quiet (although they are), but because they allow you to disconnect your heater supply from the noisy mains supply. Adding a charger instantly destroys that advantage. Of course, batteries change their terminal voltage as they discharge, so a driven valve has varying gm, which could be a problem.
Batteries are great not because they are quiet (although they are), but because they allow you to disconnect your heater supply from the noisy mains supply. Adding a charger instantly destroys that advantage. Of course, batteries change their terminal voltage as they discharge, so a driven valve has varying gm, which could be a problem.
RE:Batteries and PSRR
Hi,
First of all I can't be bothered with SLA supplies for heaters...they may sound better or not...
They're just too much hassle and I doubt they have that big an impact to justify their use.
That can be solved by using higher B+ than needed and keep it constant, again, whether it's worth it is the question at hand...
I doubt it...
It is my conviction that good PSU design can really isolate the circuit from the mains to such an extend that battery supplies only become a rather expensive option that I just can't justify.
Cheers,
Hi,
First of all I can't be bothered with SLA supplies for heaters...they may sound better or not...
They're just too much hassle and I doubt they have that big an impact to justify their use.
Of course, batteries change their terminal voltage as they discharge, so a driven valve has varying gm, which could be a problem.
That can be solved by using higher B+ than needed and keep it constant, again, whether it's worth it is the question at hand...
I doubt it...
It is my conviction that good PSU design can really isolate the circuit from the mains to such an extend that battery supplies only become a rather expensive option that I just can't justify.
Cheers,
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