tag:blogger.com,1999:blog-2514187889603153283.post547758878485811973..comments2023-08-24T07:01:18.979-04:00Comments on YZRandomE: Linear Regulated USB IsolatorYangoranghttp://www.blogger.com/profile/03413665327249318070noreply@blogger.comBlogger8125tag:blogger.com,1999:blog-2514187889603153283.post-24945403744793129882012-05-11T17:11:20.999-04:002012-05-11T17:11:20.999-04:00Took a couple more measurements.
Creative X-Fi Go...Took a couple more measurements.<br /><br />Creative X-Fi Go: 116mA - 118mA (depending on idle/active and loaded/unloaded).<br /><br />iPod Touch 3rd Gen, charging: 428mA.<br /><br /><br />I also tried the isolator with my Teralink-X2 USB to SPDIF converter. I have the "module" version that includes it's own rectifier and linear regulator. I use this inside my Buffalo II DAC for USB input. Originally I was planning to either give the isolator board its own power supply, or tap a 5V source from the Teralink-X2 board to feed it. But unexpectedly (to me anyway), the isolator LED lit up when I connected it to the powered Teralink, even before I plugged in the isolator's wall wart. That result was probably obvious, but I guess I'm still a bit of a noob at this.<br /><br /><br />I also found that a 4-40 screw fits nicely through the board holes meant for the 2.1mm power jack. That is, use one of the holes for a standoff. So even with the rev2 board, it can be easily mounted in an enclosure if you wire the DC power in through an off-board panel mounted jack.Yoga Flamenoreply@blogger.comtag:blogger.com,1999:blog-2514187889603153283.post-87030291045882466752012-05-04T02:19:20.007-04:002012-05-04T02:19:20.007-04:00Thanks for the current measurements - it's nic...Thanks for the current measurements - it's nice to have some references for how much current typical USB DACs require. (evidently my Audinst HUD-MX1 is very power hungry)<br /><br />As for cases I didn't really have anything particularly in mind. I kinda thought about it during the design but I couldn't find anything that it would fit nicely into. <br />I prefer to just use mine enclosure-less as I have pictured so it takes up the least space possible but I figured that people would just tape it down inside Altoids tins or whatever as they see fit. Just make sure your Altoids tin isn't shorting out anything on the board.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-2514187889603153283.post-56677083340515977972012-05-04T01:32:23.992-04:002012-05-04T01:32:23.992-04:00I've been using this for a couple days now. Wo...I've been using this for a couple days now. Works very well.<br /><br />I took some current draw readings with some different DACs just for fun.<br /><br />AMB Gamma2 (with the y1 section omitted)--<br /> USB mode, idle: 208mA<br /> USB mode, active: 225mA<br /> S/PDIF mode, idle: 199mA<br /> S/PDIF mode, active: 221mA<br /> any mode, self-powered: 17mA<br /><br />Creative Xmod--<br /> Idle: 82mA<br /> Active: 83mA<br /> Active with X-Fi mode: 87mA<br /> Active with CMSS-3D: 89mA<br /> Active with X-Fi + CMSS-3D: 93mA<br />(connecting to headphones didn't seem to affect the current draw)<br /><br />GrubDAC--<br /> Idle: 53mA<br /> Active: 54mA<br />(connecting to an amp didn't seem to affect the current draw)<br /><br /><br />The isolator board got hot as expected for the Gamma2. But with the other two DACs it was just a little warm. Is there a recommended case that pairs with this? If not I'll probably try and mount it sideways into an Altoids tin. :)<br /><br />I still have a couple other DACs to try pairing with this as time permits.Yoga Flamenoreply@blogger.comtag:blogger.com,1999:blog-2514187889603153283.post-82238835629207976362012-04-25T12:36:04.833-04:002012-04-25T12:36:04.833-04:00Unfortunately no - the ADuM4160 is limited to Full...Unfortunately no - the ADuM4160 is limited to Full Speed 12Mbps so if you need High Speed 480Mbps you're out of luck.<br />If you are still interested I have enough parts to construct one more unit (no power adapter supplied though like the previous listing) - it's always nice to have people testing with different applications.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-2514187889603153283.post-81882099950572025012012-04-25T11:50:37.096-04:002012-04-25T11:50:37.096-04:00Will this operate at USB 2.0 speeds (the note on c...Will this operate at USB 2.0 speeds (the note on copying a file made me wonder)? If so, there may be interest in this device for folks that are using USB-powered software defined radios (google 'rtl2832u sdr'). If you have any more you're willing to unload at a similar price, let me know and I will test them with that application Thanks!Bob Richhttps://www.blogger.com/profile/10624524087291307292noreply@blogger.comtag:blogger.com,1999:blog-2514187889603153283.post-46544761243257375502012-04-22T19:39:17.048-04:002012-04-22T19:39:17.048-04:00Thanks! Eagerly waiting for the board's arriva...Thanks! Eagerly waiting for the board's arrival now.<br /><br />The mini-USB suggestion is for the host side. It's not really that important. Just that I have lots of spare mini-USB cables.Yoga Flamenoreply@blogger.comtag:blogger.com,1999:blog-2514187889603153283.post-25409104447212108322012-04-21T20:39:03.037-04:002012-04-21T20:39:03.037-04:00I have a fully assembled Rev.2 board up for sale o...I have a fully assembled Rev.2 board up for sale on eBay if you're interested: http://www.ebay.com/itm/140742147734?ssPageName=STRK:MESELX:IT&_trksid=p3984.m1555.l2649<br />I don't expect it to sell for much as I'm mostly just looking for people to help me test it at this point.<br /><br />As for your Rev.3 suggestions I could probably squeeze in 2-3 holes somewhere for mounting.<br />Were you thinking of mini-USB on the host or device side?Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-2514187889603153283.post-66397818229311391322012-04-21T19:09:41.003-04:002012-04-21T19:09:41.003-04:00Sweet! Very nice work. I could use one of these in...Sweet! Very nice work. I could use one of these inside my DIY Buffalo DAC.<br /><br />A couple possibilities for Rev.3:<br /> - option to use a mini-USB receptacle<br /> - one or two holes for attaching standoffs (to mount in a large enclosure)Yoga Flamenoreply@blogger.com