You seem to have quoted the secondary current as 500mA, yes? Presumably the primary current will be much less, yes? In which case a 1A connector would be more than enough.warpie said:So (if I understood correct) in my case where the transformer is rated at 600mA and the circuit draws no more than 500mA, it is safe (and in accordance to international safety standard 60065) to use an IEC connector rated at 1A.
joaquins said:I have my doubts about the transformer, will it be able to manage inrush currents and peaks for charging the caps? If so, the average rating it's ok, check the peaks rating and your circuit, if you don't have the rating of the transformers at least be sure your circuit inrush and peaks currents aren't insanely high compared to the average.
JS
warpie said:joaquins said:I have my doubts about the transformer, will it be able to manage inrush currents and peaks for charging the caps? If so, the average rating it's ok, check the peaks rating and your circuit, if you don't have the rating of the transformers at least be sure your circuit inrush and peaks currents aren't insanely high compared to the average.
JS
Yes, I was thinking the same last night so I decided to go with a transformer rated at 1A so that should be fine, right?
In that case the IEC connector will be 2A.
joaquins said:What voltages are you using, your mains and the sec of the transformer?
What type of IEC connector is rated at 1 amp?warpie said:Hi ppl,
Is it safe to use an IEC connector rated at 1A with a 600mA (Secondary Current Nom.) transformer if the circuit draws around 500 mA? If so, is there any danger by doing so? Thanks
abbey road d enfer said:What type of IEC connector is rated at 1 amp?
warpie said:Sorry for the confusion. ..
Maybe a moderator can change the title?
You need the transformer current rating to be at least 1.5 times the DC current. If the DC current is +30Vdc 500mA, -30Vdc 500mA, then a 50VA transformer will be fine.warpie said:So, you suggest a 85VA 2x28V for a circuit that draws no more than 500mA? Interesting. I'll look into this.
warpie said:Sorry my mistake, it's +/-28V but I don't think it makes much different.
It's actually the TG-1 project that I'm trying slowly slowly to complete. People use 50VA 2x25V transformer for this project (some people even used 30VA 2x25).
So, you suggest a 85VA 2x28V for a circuit that draws no more than 500mA? Interesting. I'll look into this.
Thanks for your help!
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