Denizen of a bygone age.
Still very useful.

Fun - DIY with 12V transformers
http://sparkbangbuzz.com/mag-amp/mag-amp.htm


_______________

1951 US Navy paper
Fascinating
http://teslapress.com/magamp.pdf

            and http://teslapress.com/magamp.html

      and
http://www.themeasuringsystemofthegods.com/magnetic%20amplifiers.pdf

_________________

1960 book. 100 pages
http://www.pmillett.com/tubebooks/Books/mag_amp.pdf

[Related site - excellent]
http://www.pmillett.com/tubebooks/technical_books_online.htm

______________

http://www.vias.org/eltransformers/lee_electronic_transformers_09_12.html

PE 1960
http://www.rfcafe.com/references/popular-electronics/magnetic-amplifiers-ju=
l-1960-popular-electronics.htm

http://electronics.stackexchange.com/questions/33587/controlling-a-current-=
with-another-home-made-alternatives-to-the-transistor

http://www.transformerssigma.com/magnetic-amplifiers-and-reactors.html

*h:* *A half-wave push-pull magnetic amplifier*
http://commons.wikimedia.org/wiki/File:Magnetic_amplifier_push-pull.png

WikiP
http://en.wikipedia.org/wiki/Magnetic_amplifier



Linked images
https://www.google.co.nz/search?q=3Dmagnetic+amplifier&tbm=3Disch&imgil=3DW=
zYgHNlzAzKgaM%253A%253Bhttps%253A%252F%252Fencrypted-tbn0.gstatic.com%252Fi=
mages%253Fq%253Dtbn%253AANd9GcRdfoxtQPf92Ar7UMINzgVuNpDpnDB5-kURsK54gyMFffy=
O8vMy%253B383%253B289%253BvW41il_UKwH9MM%253Bhttp%25253A%25252F%25252Fspark=
bangbuzz.com%25252Fmag-amp%25252Fmag-amp.htm&source=3Diu&usg=3D__jDiZQNfVPH=
1johwm4PRTEe_tuVM%3D&sa=3DX&ei=3DuFfBU4qhGcLikAXvkYCYBg&ved=3D0CDAQ9QEwAg&b=
iw=3D1536&bih=3D826
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