Hi guys
Does someone has experienced on Aluminium Electrolytic Capacitors in low temperature, like -20 degree C or so.
I have tried three random caps in my junk box, here is what I got (measure at 100Hz):
Room temperature:
220uF - ESR 0.7 ohm
330uF - ESR 0.5 ohm
1000uF - ESR 0.4 ohm
After two hours in my fridge at about -18 degree C:
220uF - ESR 1.4 ohm
330uF - ESR 0.7 ohm
1000uF - ESR 1 ohm
Capacitance doesn't drop much.
Is there anything else I should worried about at low temperature?
Is my simple test seasonal correct? or Am I missing something important here?
Thanks guys
Does someone has experienced on Aluminium Electrolytic Capacitors in low temperature, like -20 degree C or so.
I have tried three random caps in my junk box, here is what I got (measure at 100Hz):
Room temperature:
220uF - ESR 0.7 ohm
330uF - ESR 0.5 ohm
1000uF - ESR 0.4 ohm
After two hours in my fridge at about -18 degree C:
220uF - ESR 1.4 ohm
330uF - ESR 0.7 ohm
1000uF - ESR 1 ohm
Capacitance doesn't drop much.
Is there anything else I should worried about at low temperature?
Is my simple test seasonal correct? or Am I missing something important here?
Thanks guys