sensing the existance of the AC power line
45229
How can I detect a power outage with a microcontroller?
61107
Easiest/affordable way to monitor what's using power in your home?
35417
Monitoring Bandwidth Across Multiple Systems in a Home Network
69035
Determining current in a branch having no resistor
106964
High voltage transmission, transformers and Ohm's law
78058
Is there any option to store AC voltage?
102134
A voltage graph in PGF plots
30498
Energy conservation and interference
74425
How precise is the frequency of the AC electricity network?
43715
Reverse polarity protection
69399
Alternating Current Inquires
140125
Electric power transmission
110
What's a good sensor for measuring high voltages
141144
Electrical Machines based on Electric Fields
49524
Frequency division and signal spectrum
41995
Dependent and Independent Variables in an Electrical Experiment
38256
splitting sensor signal line