tag:blogger.com,1999:blog-1592992209402300549.post7674457584440100164..comments2024-03-28T08:06:43.198-04:00Comments on The Silicon Graybeard: A Useful Little Tool Off the 3D PrinterSiGraybeardhttp://www.blogger.com/profile/00280583031339062059noreply@blogger.comBlogger3125tag:blogger.com,1999:blog-1592992209402300549.post-60439884035984208852021-05-12T07:27:25.551-04:002021-05-12T07:27:25.551-04:00The only obstacle is that they're 6S strings, ...The only obstacle is that they're 6S strings, so the pack is 21V when it comes off the charger and around 17 when discharged. That means it's going to need some sort of DC-DC converter to get it down to something that won't blow up the radio. <br /><br />Because you need efficiency, it has to be a switcher. Because it's a radio, it has to be an EMI-quiet design. Once you start looking down that line, it has to be able to handle whatever power the rig wants while transmitting. Depends greatly on the radio.<br /><br />I've never done switching power supply design, but what's retirement for, anyway? <br /><br />SiGraybeardhttps://www.blogger.com/profile/00280583031339062059noreply@blogger.comtag:blogger.com,1999:blog-1592992209402300549.post-3858666708845833592021-05-12T01:33:46.696-04:002021-05-12T01:33:46.696-04:00That's a clever idea. These new Li-Ion batteri...That's a clever idea. These new Li-Ion batteries can pack a stunning amount of energy compared to Ye Olde Dayes of rechargeable batteries. There are some that would run my Elecraft K2 for quite a while if TSHTF.drjimhttps://www.blogger.com/profile/05647484115197408897noreply@blogger.comtag:blogger.com,1999:blog-1592992209402300549.post-42581330918280722582021-05-11T23:35:07.165-04:002021-05-11T23:35:07.165-04:00I LIKE the 18VPlus series. I got a set of the NiCa...I LIKE the 18VPlus series. I got a set of the NiCad tools when a neighbor went into hospice. The cells went Tango Uniform, but the new LiIon thingies that I got to replace them worked perfectly. Then there was a set (Drill motor, flashlight, recip saw, circular saw, other stuff, plus 2 chargers and 3 batteries, for the price of like way cheap), all retro compatible. And then, on a very sad December day, I saw a neighbor. He seemed distressed. Just a neighbor, right? He had a son in the Navy, QM, Logistics. I got a son in the USMC, MOS 305, logistics. We both did some set building for local theatrical troupes. Some commonalities, you might say.<br />But neighbor was bummed. All of his cordless power tools had been stolen. Just the tools, not the batteries and chargers. 'What brand' I asked. 'Ryobi 18v'. 'I'll be back in 5'JChttps://www.blogger.com/profile/02448124833598565813noreply@blogger.com