On 13 Sep, 12:54, Paul Herber
wrote:
On Thu, 13 Sep 2007 04:47:27 -0700,
wrote:

Hi all,

Just an academic question.

What used to be used in Car Battery charger to convert the AC - DC
before silicon diodes/bridge rectifiers came along?

And did they do full rectification or just half wave?

http://en.wikipedia.org/wiki/Metal_rectifier

--
Regards, Paul Herber, Sandrila Ltd.
Electronics for Visio http://www.electronics.sandrila.co.uk/

Well, that was very quick! For a suplementry question (no extra
points i'm afraid) has technology moved on since the 70's? or are
todays chargers still a transformer, rectifier and a fuse in a box?