yahoo,
I am working on a circut which uses a EEPROM made by Parallax to
animate a string of christmas type lights. I intend to have four
separate 120vac outlets that are switched on and off (dimming would
be nice) by the EEPROM. Obviously, the outputs EEPROM can not handle
much current at all.
Memories of any kind are not designed to drive anything but other circuits.
In addition digital devices won't like AC. What you will need is a triac for
each AC device. In addition I would use opto isolators to couple the
controlling signals to the triacs and probably buffers to control the opto
isolators. An opto isolator is a device that uses some kind of light source,
usually LED's to turn on and off another device, like a transistor or a
triac, etc. A buffer is a device that draws very little current from the
input device but can deliver larger current to the output device.
Jim
I thought of using the EEPROM to control a small
relay and hook the contacts of the small relay to a coil of a larger
relay to turn the light on and off, but I would like to use some kind
of solid state circut to control the 120vac (that way I could
implement dimming). Any thoughts on how I can control the 120vac with
a small current. Sorry I don't know the exact peak current the
outputs on the EEPROM can handle.
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