Electrical conducting pivot
Electrical conducting pivot
(OP)
I need to add a small lever to a Printed Circuit Board (PCB) to push a small plastic part with a max force of about 200g. This is part of a high impedance, low power circuit running at 0.5 A at 4.5V for 1 second with an infrequent duty cycle (in simple terms, I'm dumping 3 AAA into 1/2 ohm resistance load with in line current limiting resistance added to keep it at 0.400 mA). The power runs through this pivot/bearing. I need to keep the resistance down to below 5 ohms and the resistance needs to be constant over time. The pivot (a round PCB PEM nut that press fits into the PCB) is described as "300 Stainless Steel Passivated and/or tested per ASTM A380" The pivot has an OD of 0.219". A tubular sleeve with lever arms fits over the pivot. A wire is connected to the pivot arm that carries the current.
My questions are:
1) Is a similar SS material the best choice for the sleeve/arm or can I use easier to machine steel and plate it (and plate it in what way)?
2) Should I use conductive grease?
3) How much slop should I allow for between the pivot and the sleeve?
FYI, more details of the KPS6 pivot: http://sel ect.pemnet .com/inter activeSear ch.php?FAS TACT=ISEAR CH_PRODUCT 2& FPRODUCTID =2424& amp;PAGEID=
Thanks
My questions are:
1) Is a similar SS material the best choice for the sleeve/arm or can I use easier to machine steel and plate it (and plate it in what way)?
2) Should I use conductive grease?
3) How much slop should I allow for between the pivot and the sleeve?
FYI, more details of the KPS6 pivot: http://sel
Thanks





RE: Electrical conducting pivot
If it has to rotate continuously, the traditional solution is a carbon button and a stainless leaf spring, like in a distributor cap and rotor.
Mike Halloran
Pembroke Pines, FL, USA
RE: Electrical conducting pivot
Keith Cress
kcress - http://www.flaminsystems.com
RE: Electrical conducting pivot
Dan - Owner

http://www.Hi-TecDesigns.com
RE: Electrical conducting pivot
Z
RE: Electrical conducting pivot
macgyvers2000's comment is good as pogo pins are generally gold.
Keith Cress
kcress - http://www.flaminsystems.com
RE: Electrical conducting pivot