Leo Maximus wrote:... With an adequate NTC, we will have 230V after a short time since the resistance will drop to 0 ohms ...
I correct: will approach 0 ohms.
Leo Maximus wrote:... With an adequate NTC, we will have 230V after a short time since the resistance will drop to 0 ohms ...
Remundo wrote:yes, hence the advantage of an NTC resistor which always ends up not "giving a hand" by heating because its resistance collapses.
dirk pitt wrote:it works with a bulb and the consumption in the bulb is negligible (do not trust its characteristics) because it is in SERIES with the compressor so the voltage across its terminals is low.
the difficulty, on the other hand, is to find the right bulb value which will make a current limitation compatible with starting the compressor.
indeed, the compressor may not be able to start if the current is too low.
Exactly and you can also use a PTC (positive temperature coefficient), as a peak current limiter.Leo Maximus wrote:See the link for EPCOS NTC (or CTN) thermistors where it is indicated that it is intended for the "soft start" of electric motors: https://en.tdk.eu/inf/50/db/icl_16/P27.pdf
For an acceptable temperature (50 to 75 ° C) one can have a resistance lower than 1 ohm, see the graph.
izentrop wrote:Don't you have a 1000 W halogen in your drawers?
It is nickel-chromium, temperature coefficient much too low for this function.Leo Maximus wrote:We could (maybe) take a toaster resistance.
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