…its a Variable Voltage Mains power supply …built in afew evenings from a Cheaply adquired Variac & a bunch of rally components 
Its for testing equipment in under and over voltage conditions…
This build has got nothing to do with mios, tho it might interest some
looks cool
you keep saying you get bits from radio rallies what kind of radio you into
many moons ago i used to be into shortwave and general scanner noseyness …tho mainly it was just a good place to go get parts to feed my electronics hobby in general..
yea i still got a bearcat scanner and 446 dont use them so much but internet gateways are interesting, rallies are fun some good people interesting tat
anyway that enough of that
kris
Muha…I love such old nice things…put a MB in it ! ;D ;D
“turn with care”
I love that!! ;D
yes…
..oh also useful as an overkill way of making any soldering iron temperature 'controlled ’ 