Tagged Questions
0
votes
2answers
300 views
how to use CT to measure current [duplicate]
I have purchased CT but don't know what his terminals means and how to identify primary and secondary coils terminals. I am software engineer but currently learning pic controller. as for I have read ...
0
votes
1answer
287 views
Current Transformer with pic16f877a
I am currently working with a current transformer (CT) to measure the load current of a system. I am connecting the CT with a pic16f877a microcontroller using a basic circuit I found on the internet. ...
2
votes
2answers
672 views
Using a CT to measure the current in home electronic devices
I am developing a project that consists of measuring the consumption of a power strip (not sure how it is in english/figure below). I'm already able to measure the instantaneous voltage using a ...
1
vote
1answer
1k views
Why are CT's(Current Transformers) on an ammeter / energy meter connected to ground?
It's understandable that a CT, needs to be shorted (or a burden resistor) if there's nothing connected to its output, otherwise it would work as a step-up transformer.
But why is it that energy ...
1
vote
2answers
257 views
How do I protect against voltage surges from sensors?
I'm attempting to use a CT to measure AC current. I got a lot of information in this answer to another question which led me to huge amount investigation.
I want to measure the current in use by an ...
0
votes
2answers
627 views
When converting 120vac to 12vdc, does the wattage & amperage change?
I'm trying to calculate how long my UPS will power my cable modem and router.
I know that together the two draw 2.25 amps at 12 volts (27 watts), but this is on the DC side of the power brick. Does ...
