Mains Voltage Current LED Indicators
Mains Voltage LED Indicator
This is a mains 230V AC voltage indicator and is a LIVE
CIRCUIT, so
take care. The Resistor has to be a fusible ceramic wire wound and the
capacitor 630V AC or higher capacity.
This circuit has been drawn from my memory and i
have not tried it out again, just see if it is ok and then try. You
should use the fuse of 100mA a slow blow if you want but it is very
important. This circuit has to be enclosed in a plastic sealed
enclosure to avoid contact.
Mains Current LED Indicator
This is a mains 230V AC load current
indicator and is a LIVE CIRCUIT, so take care. The Resistors have to be
a fusible ceramic wire wound.
This circuit has been drawn from my memory and i have not
tried it out again, just see if it is ok and then try. You should use
the fuse of 1A a slow blow if you want but it is very
important. You can design the shunt R3 and Fuse rating as required by
your load. Note that this circuit is to be put in series with the load
like an
ammeter. If you put it across the supply like a voltmeter it will fuse
out or
burn out. This circuit has to be enclosed in a plastic sealed enclosure
to avoid
contact.
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