eeh said:
Hi,
Recently I need to control Triac by MCU. I wonder if there exists some
protection equipments to develop these kind of embedded system such as
current limiting of main AC as I am just a beginner.
I usualy rely on my wits to protect me although i have learned the hard way
to clearly mark any mains plugs/leads used to conect the equipment under
test to the mains
as other posts have sugested bulbs in series etc also variac and isolation
transformer of course. dont forget that about only a mere 20ma at mains
voltage is considered enough to be hazardous to health.
fusible resistors can also be a help as they initialy limit the curent and
also disconect it
(any metal film resistor will fuse at high overload, puting a sleave over it
wil stop bits hiting you in the face when it explodes) you can also get re
setable curent trip devices.
other personal safety devices often get tripped far too easily if you have
much in the way of interfence supresion or scopes conected to it etc.
Colin =^.^=