Battery:Rechargeable Ni-MH battery
hobie1dog wrote:I haven't been able to find a better price than the one in the link below so I'm probably going to go ahead and get this one for $240.00
https://tensnet.com/products/mobicushio ... -cushion-1
Burgerman wrote:The alerta one. But made my own cushion. Since they are all too small and just a lump of floppy foam.
Burgerman wrote: If you want to do that on the fly, just get an xlr plug, and a cheap ebay buck inverter board - which are very small - and a plug that fits the pump charge socket. Then you can tuck that out of the way somewhere on the chair just in case. I must say that I never found the need.
Even a single 3 leg volt reg chip would do it. The current is low. So not much heat to waste. But buck inverter is a better way.
Theres even ready to go ones in a tiny box, 12V and up to 40V input. Just add an XLR plug and you have a charging lead. Up to 3A. https://www.ebay.co.uk/itm/Voltage-Conv ... 0005.m1851
Worth noting that there are now 'drop-in' buck converter replacements for the old fashioned 3-leg regulator chips like the 7805 and friends.... Claim is that they are the same package style, pin-out, and use the exact same support circuitry as the originals, but are 90+% efficient.... No excuse for the old style chips inefficiency and waste heat.... However still probably better to get a ready made unit unless you are really into hacking up your own circuits, making boards for them and so on...
3-leg regulator chips
Burgerman wrote:Worth noting that there are now 'drop-in' buck converter replacements for the old fashioned 3-leg regulator chips like the 7805 and friends.... Claim is that they are the same package style, pin-out, and use the exact same support circuitry as the originals, but are 90+% efficient.... No excuse for the old style chips inefficiency and waste heat.... However still probably better to get a ready made unit unless you are really into hacking up your own circuits, making boards for them and so on...
Interesting. Any links to where to buy?
Burgerman wrote:Its not meant to feel confortable... Its meant to lift the skin that has been supporting you, OFF the deck so blood can reoxygenate the cells so they dont die. As such the pressure must be high enough to lift you in the other places... Which is likely not very comfortable. It should feel like you are sitting on a few hard bits. That change slowly to few different hard bits every 10 mins. A 20 min cycle.
If its comfortable its not doing that. I cant feel a thing.
snaker wrote:3-leg regulator chips
Is it the one in the link below? I intended to use it to convert 24V -> 5V in a project. But a friend told me that it was not simple to use it alone. It requires conjunction with some other things like e.g capacitors. He advised me using a bulk module (that already has all needed components soldered on a tiny pcb). And a bulk module is more efficient, cooler than a regulator chip. Is he right?
https://www.adafruit.com/product/2164
wheelie junkie wrote:Initial impressions of the Apex 500 aren't good, both ischials are pinker after 3 hours than from the Roho contour. Possibly got the settings out using setting 2 of 5 so will experiment with higher and lower.
I was hoping for a miracle fix sadly now realise that there is not one especially with a skinny low fat arse and ischials that have been damaged too many times.
wheelie junkie wrote:I was hoping for a miracle fix sadly now realise that there is not one especially with a skinny low fat arse and ischials that have been damaged too many times.
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