Michigan Escapee
ArboristSite Operative
40/60/80v chainsaws are nothing new, but now at least there's some attempt at backward compatibility by allowing the battery packs to operate in 3 x 20 volt banks in parallel, or 3 banks in serial for the higher voltage.
and a few gizmos that are, from an electrical engineering perspective, looking like the special olympics.
Wow! 120 AC out of 72v DC under load! Only $400 for a 3600 watt peak inverter!
But hey, it's got more electrolytes!
Just how much of an engineering challenge is such a device, hmm, lets just say none. 3 chip, off the shelf H bridge + drivers. http://www.irf.com/technical-info/refdesigns/irsolwib.pdf
They also mention that they didn't want it to be a high current charger to keep down the heat. lol! Hmm, could it be that they're so cheap they recycled some of the H bridge circuitry to function in a charging capacity when it's plugged in? That would be silly! You'd lower your service life from 5-10 years down to 2-5 by doubling up on the same components.
But the good news is, simple is better when it comes to certain types of tools. And there's certainly no shortage of 120v tool motors out there that can be re-purposed for cordless lines. Will this lead to some amazing new things from Dewalt? Nah!
However, Milwaukee is certainly playing around with tool crib management phone apps.
http://www.coptool.com/todays-biggest-tool-question-what-is-milwaukee-one-key/
And, who knows, maybe Ryobi will finally release that 20v 5Ah battery they've had around for 2 years onto the US market finally. ;P
and a few gizmos that are, from an electrical engineering perspective, looking like the special olympics.
Wow! 120 AC out of 72v DC under load! Only $400 for a 3600 watt peak inverter!
But hey, it's got more electrolytes!
Just how much of an engineering challenge is such a device, hmm, lets just say none. 3 chip, off the shelf H bridge + drivers. http://www.irf.com/technical-info/refdesigns/irsolwib.pdf
They also mention that they didn't want it to be a high current charger to keep down the heat. lol! Hmm, could it be that they're so cheap they recycled some of the H bridge circuitry to function in a charging capacity when it's plugged in? That would be silly! You'd lower your service life from 5-10 years down to 2-5 by doubling up on the same components.
But the good news is, simple is better when it comes to certain types of tools. And there's certainly no shortage of 120v tool motors out there that can be re-purposed for cordless lines. Will this lead to some amazing new things from Dewalt? Nah!
However, Milwaukee is certainly playing around with tool crib management phone apps.
http://www.coptool.com/todays-biggest-tool-question-what-is-milwaukee-one-key/
And, who knows, maybe Ryobi will finally release that 20v 5Ah battery they've had around for 2 years onto the US market finally. ;P
