Voltage Regulator Circuit Diagram Wanted!

[goldenarc]

I am currently doing a project on voltage control system. Could you
send me a circuit diagram for an automatic voltage regulator that
accepts input voltage of 100 - 260V AC at 50Hz and gives an output
voltage of 220V AC at the same frequency.

 

[Phil Allison]

"goldenarc"

I am currently doing a project on voltage control system. Could you
send me a circuit diagram for an automatic voltage regulator that
accepts input voltage of 100 - 260V AC at 50Hz and gives an output
voltage of 220V AC at the same frequency.

** My diagram involves a Monkey, a Voltmeter and a Variac.

Is that OK ?




........... Phil

 

[Jon]

My mother-in -law is available. Now all you need to do is find a
Variac and a voltmeter. But seriously folks; this sounds like a good
application for a ferro-resonant type AC regulator. They are simple
and reliable. Sola makes a line of these. You would have to use a 1:2
stepup transformer at the output of the regulator. I'm not sure that
Sola makes a 50 Hz model. Search for "ferro-resonant regulator" if you
want to design your own. Basically they are transormers with an
auxilliary winding that resonates at the line frequency. The resonant
winding causes the core to saturate, thus regulating the output.
Commercial models have harmonic correction circuits to correct for the
distortion produced by the core saturation.
~
One caveat: This type regulator is not very efficient.
Regards,
Jon

 

[Rich Grise]

I am currently doing a project on voltage control system. Could you
send me a circuit diagram for an automatic voltage regulator that
accepts input voltage of 100 - 260V AC at 50Hz and gives an output
voltage of 220V AC at the same frequency.

No, sorry.

Good Luck!
Rich

 

[Ken Smith]

** My diagram involves a Monkey, a Voltmeter and a Variac.

In China they use an automated version of this idea a lot. Id doesn't
involve an wiper contact. It is made more like a wound rotor induction
motor. When the coils turn to align, the voltage is stepped up. When
they turn to 90 degrees, it is 1:1.

You may be able to find a drawing for one with google.


BTW: it has to have a set of brakes (that work). Without them, when you
switch off the power, the thing swings around to full boost. When the
power returns, it takes a while to readjust and burns out the lights so
you can't see the thing to fix it until the morning.