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Sci.Electronics.Basics -> Here's a development one can use - for AC/DC power control
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Author: defaultDate: 19:06 30-10-06
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http://www.alliedelec.com/Images/Products/Datasheets/BM/AROMAT/Aromat_Industrial-Control_7
880258.pdf
This is one of the new crop of mosfet drivers. A chip that takes
enough power (or about 1/6th) to light an LED.
The chip incorporates a series of photovoltaic diodes (in series) that
are illuminated by the driver LEDs. That provides the microamps of
drive a MOSFET requires to turn on.
So you get a mosfet driver that isn't referenced to ground. Easy! to
apply to "high side" control or AC power control - see the data
sheet..
The downside is the speed - a few milliseconds to turn on and,
relatively speaking, slow to turn off - fractions of a ms. Cost is
$1-$3 each depending on one's parts outlet.
On the plus side - this is a dynamite high side/low side, driver for
most DC applications, and slick easy to apply. Easy to use for an
AC/DC solid state relay.
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