GSM Module GND pin connecting to 220V AC Power phase line !

Status
Not open for further replies.

hm_fa_da

Full Member level 5
Joined
Sep 16, 2003
Messages
287
Helped
10
Reputation
20
Reaction score
4
Trophy points
1,298
Activity points
3,217
Hello,

I am working on a circuit in which the GND ping of GSM module connects electrically to phase line of 220V AC power line !

the power supply of the circuit is supplied by a SMPS, but the connection of gnd to phase line is done because i am measuring the phase line current through a shunt resistor.

now, does it make any problem in GSM module function ?
 

People invented the current transformer to avoid similar situations....

I don't believe that the high potential ground causes particular problems for the GSM module. Standard GSM antennas aren't necessarily designed with safe insulation, it's your job to make the design compliant to safety regulations.

You know that a GSM module needs 2A peak current? Is it provided by your power supply?
 

Thanks for your reply, but CT has it's own problems such magnetic tamper and higher price, anyway i am using shunt because of many reasons like price and accuracy.
and i know about 2A peak current for GSM module, my ps is 3A SMPS.
my question is not around safety of device, i am using gsm antenna inside the case so there is no physical connection to outside but i doubt for that high and wide physical network of power line to cause problems on telecommunication, GSM working and antenna radiation ...
 

Status
Not open for further replies.

Similar threads

Menu
Log in
Register
Cookies are required to use this site. You must accept them to continue using the site. Learn more…