Hi Patrick,
Why use a Relay instead a simple switch?
The floating supplies need separate "switches" and relays are more convenient as you may control multiple with a single simple switch.
Well, one can in theory also use those multi-deck switches as used in the Cordell THD Analyser.
http://www.diyaudio.com/forums/solid-state/154260-my-implementation-cordell-distortion-analyser.html
Patrick
http://www.diyaudio.com/forums/solid-state/154260-my-implementation-cordell-distortion-analyser.html
Patrick
Patrick
does 18VAC 1.6 A transformer proper choice for charging 4 x 14 x 1.4 NiMH batteries with one LM317
I believe that each stack of 7 cells will "eat" 60 mA. This is 60 x 4 = 240 mA
18V x 0,25 A = 4,5VA and yours is 1,6A x 18V = 28,8 VA
seems OK
For the moment I'm only making tests.
But I think that I'm not making an eco friendly I/V because a resistor I/V is better to save the energy of the planet.
For now the problem to solve is to obtain low noise and after I'll try other shunt configurations.
Thanks and I'll keep you informed.
Ciao
Guglielmo
But I think that I'm not making an eco friendly I/V because a resistor I/V is better to save the energy of the planet.
For now the problem to solve is to obtain low noise and after I'll try other shunt configurations.
Thanks and I'll keep you informed.
Ciao
Guglielmo
If it should need 70mA extra to drive a 35mA load, then maybe you should consider using something else, like Walt Jung's shunt.
Of course you can shunt less, but as usual performance is better the more you shunt (as long as you can cool it).
But the minimum current of SSLV1.1 in original design is 100mA if i'm right, but you can always change some fets to lower it.
It's just as simple as performance vs power-usage/heat.
> It's just as simple as performance vs power-usage/heat.
Even if this is the wrong thread I'm curios towards the validity of this postulated "simple" correlation between performance vs power usage.
1) Is it true for a constant current loads?
2) What is the correlation coefficient? You get 10% or 0.001% better performance by doubling the power usage?
curios minds want to know....maybe I should ask Salas
Even if this is the wrong thread I'm curios towards the validity of this postulated "simple" correlation between performance vs power usage.
1) Is it true for a constant current loads?
2) What is the correlation coefficient? You get 10% or 0.001% better performance by doubling the power usage?
curios minds want to know....maybe I should ask Salas
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