21 Sep
2018
21 Sep
'18
2:20 p.m.
On Fri, Sep 21, 2018 at 1:38 PM, Noel Chiappa via cctalk <
cctalk at classiccmp.org> wrote:
My understanding is that, without using a transformer
(which creates an
independent circuit loop - more below), there's no way to increase the
_amperage_ out of circuit over what's fed into it: since amps are
electrons/second, the electrons/second out more or less have to equal
electrons/second in, since one can't easily 'create' electrons - at least,
in
normal electonic gear!
No, a switching buck converter can definitely have more current out than
in. In fact, that's common. The buck regulator on your PC board may supply
100A at around 1V to your CPU, but doesn't draw anywhere near that many
amps from its 12V input.
Although it works differently than a stepdown transformer, it does the same
job, converting power at a higher voltage but lower current to a lower
voltage at a higher current.