ptc thermistor

[polyal]

can i use a fuse type ptc thermistor as a power tool ( drill )
heat sensor..so the charging process ceases when the battery pack
reaches the permitted max temperature allowed by the charger circuitry

the charging stops when the thermistor exceeds appx 600R

 

[kellys_eye]

What you do is your business but messing around with charging processes can be either passive (simply doesn't work) or 'active' (where the battery explodes in a spectacular fashion) which is why most chargers - certainly for modern chemistry batteries - are made with some form of 'intelligence' about them i.e. they monitor charge status as well as cell temperature to regulate the charging process.

Your suggestion seems too simple to be safe and is something I wouldn't recommend either for safety reasons or for longevity of the battery.

 

[polyal]

i am not suggesting anything i want to replace a faulty thermistor
please read the post....and what i do is my business...
so if you dont know dont reply
regards

ps thermistors are passive components and modern batteries dont have intelligence
its the associated active and passive component circuitry that make them more efficient
and give them longevity and usefulness

 

[kellys_eye]

Well, bang goes my attempt at helping......

You seem quite capable (?) of figuring it out for yourself - carry on.

 

[polyal]

if i could sort it out myself i wouldn't be on this forum asking for advice ??
lets hope i can get a sensible response

to repost my queery :
can i replace a 'switching' ptc thermistor with a resetting 'fuse' type

any sensible info would be appreciated

 

[davenn]

ps thermistors are passive components and modern batteries dont have intelligence
its the associated active and passive component circuitry that make them more efficient
and give them longevity and usefulness

this is incorrect

@kellys_eye was setting you on the correct path, you would do well to pay heed to what he said .....

messing around with charging processes can be either passive (simply doesn't work) or 'active' (where the battery explodes in a spectacular fashion) which is why most chargers - certainly for modern chemistry batteries - are made with some form of 'intelligence' about them i.e. they monitor charge status as well as cell temperature to regulate the charging process

Dave

 

[polyal]

so you dont know either? ...somebody must be able
to answer my queery
CAN I REPLACE A SWITCHING PTC THERMISTOR WITH A RESETTING
FUSE TYPE.. AS A HEAT SENSOR IN AN ELECTRIC DRILL POWER PACK

in response to the 2 replies
Thermistor temperature sensing is one of the most sensitive properties or parameters for industries like petrochemical, automotive, aerospace and defence, consumer electronics, and so on. These sensors are installed into devices with the purpose of measuring the temperature of a medium accurately and efficiently in a given set of requirements

 

[Cannonball]

Why not replace it with a ptc thermistor.

You can't out engineer the engineers.

 

[(*steve*)]

CAN I REPLACE A SWITCHING PTC THERMISTOR WITH A RESETTING
FUSE TYPE..

YES YOU CAN.

I WOULDN'T, BUT YOU CAN.