Maker Pro
Maker Pro

Toroidal mains Tx inrush limiter - retrofit

N

N_Cook

Jan 1, 1970
0
It looks as though you use the de-rating curve
http://www.rtie.com/ntc/surggard.htm
So for 7 amp NTC running outside of short duration peaks say an average 1/3
of 7 amps of mains 240V for driven amp and less than rated mains fuse then
125 degrees would be the operational maximum of the thermistor.
Would be nice to know a rule of thumb formula for real life "black body"
radiator/convector temperature and power consumption whether disc
thermistors or rod
resistors
 
N

N_Cook

Jan 1, 1970
0
Testing this SG 130 on a 12V SLA and headlamp, stabilised at 2.8 amp, .91V
over it and 102 deg C (ambient 18 deg C), no woven glass sleeve covering
 
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