How to chose damping resistor (animation)

[6666]

I have been looking for this post for ages, and have just found it again
its a nice little animation of how to chose the damping resistor.

http://www.geotech1.com/forums/showpost.php?p=122955&postcount=373

[satdaveuk]

I have been looking for this post for ages, and have just found it again
its a nice little animation of how to chose the damping resistor.


http://www.geotech1.com/forums/showp...&postcount=373

brilliant idea, thanks for reposting

[Alexismex]

Thank you 6666, i have see years ago this gif , very good for student ...this time i save it

[authere]

Hi All,

One problemmo!, don't forget to preset the potentiometer or things get fried like a minelab GP3000.

Ron

[satdaveuk]

Hi All,

One problemmo!, don't forget to preset the potentiometer or things get fried like a minelab GP3000.

Ron

Good valid point
would be better to put low value resistor in series with the pot just incase as a safety measure, then when measuring incl the both.

Regards

[Qiaozhi]

Good valid point
would be better to put low value resistor in series with the pot just incase as a safety measure, then when measuring incl the both.

Regards

I use a 10k pot with a series 270 ohm resistor, both in parallel with a 1k2 resistor, which provides an adjustment range between 220 ohms and 1k1. Then you don't end up frying the mosfet.

[bernte_one]

hello
where i have to connect scope probe on baracuda pi
to measure damping range?

regards

[6666]

Should be pin 6 of NE5534
make sure the coil is away from all metal

[bernte_one]

thanks to australia