Not really a question but I felt there's no other way to bring up a topic this topic.
As we all know an active low signal means that something is asserted only when an incoming/outgoing signal is pulled low from a high value.
The reverse is true for active high, it is only asserted when the...
patprimmer
I respect yours and kenvlach's comments.
Kenvlach can the roller as you mentioned have etches made into them so that I can roll over areas I don't want to have TPU'ed?
For example could I etch a line in the roller and roller over something so I don't heat over the TPU covering that...
I can't use fabrics with PU already on it because for my apllication I want to hermitically seal objects within the thermoplastic. I'm sure companies wouldn't manufacture hand held sonic welders if you couldn't do this. If not thermsoplastic PU then some other kind of thermoplastic must be used...
Does anyone know what thermoplastics I should consider to weld onto fabrics using a hand held ultra sound welder at 20khz-40khz low amplitude?
I've heard two different answers for polyuretahne film adn am unsure about this material.
Thank you in advance.
I actually just referenced from somewhere that sing ultra sound to weld is pretty poor as you guy said, but RF might work for TPU sinec the heat generated is much greater. Problem with thatis I would still need a hand held version for the shop.
I figured I could use TPU and fine weld designs for my own pair of gloves or pairs pants.
I thought companies that make sports gloves use TPU on the palm portion of the gloves enabling better gripping.
It would be great if the thermoplastic was abrasion resistant. Any suggestions?
Thank you...
Is there anything that can securely fasten .75mm (0.029 inch dia) Polymethyl Methacrylate polymer (PMMA) core fiber optics strands?
I want to be able to place a fiber in and not have to worry about it falling out. It should have a good retention force (I think I used that term correctly)...
I'm electrical seeking advice about materials. I want to use an Ultra Sonic hand held welder to weld TPU on fabric. The welder I'm thinkng of purchasing is 500Watts and operates at 20khz.
I'm not sure what types or grades TPU comes in I just know I need something thin and can be bonded with...
Thank you all!
I interpretted the units wrong. Makes sense now. It should be like when the electric comapny reads your meter in KW*hours. Which is how much power hourly is being delivered to your home.
But because a rated for 500mA is not continous (by that I mean as the battery provides...
I know mAh stands for milliamps per hour but does that mean what the battery can deliver as the max for any time frame? In other words I'm powering a circiut that demands 500mA and the battey is rated for 500mAh guaranteed can I expect that battery still have enough life for reasonable...
In resposne to itsmoked:
Yes the PS does have a dial to adjust voltage, current and power limits.
In my first post I did want to increase the current limit but I just wasn't sure how high was safe enough to cover the inrush without casuing damage to the rig.
At my job someone more familiar...
In response to waross and sreid, yes these devices do have an energiztion surge.
My power supply may not be able to handle the initial surge. In that case is there some way to set it so it can handle the surge current?
thanks for ur help by the way
