Reply #17: Who said "diode"? [View All]

[DrGregory]

Besides, that is old technology. We use zero-crossing circuits without rectifier diodes now.
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Who said "diode"? I didn't say diode - I said "rectifier";
a term that includes old fashioned diodes and zero-crossing circuitry.

Rectifier is the whole CLASS of devices.

This is what we in science call a "straw man" tactic.

You take something someone said, interpret it in a way
that is useful for your side, and then proceed to attack
the interpretation that you made.

When used in a scientific circles - it is regarded as SLEAZY.

I gave the cite to one of the companies that makes the items;
and they quote the efficiency of the chargers to be in the
range of 60% to 80%

In order to be conservative, I chose the most efficient value
for the chargers.

The chargers for batteries are not just rectifiers, and filters.

Especially, for new batteries like the lithium-ion; the manufacturers
of which specify / constrain the charging rates and voltages. Therefore,
the chargers for lithium-ion are quite complex and have to tailor the
voltage and charging rate to the depleted condition of the battery.

That's a LOT of regulation and voltage / current control; which eats
into your efficiency.

The old lead-acid batteries weren't as finicky as the newer lithium-ion,
and you didn't need as sophisticate a charging circuit.

Dr. Greg