The growing criticism of inline inductors is why put a low pass filter in line with a component with high speed current needs. It may reduce the symptom but by starving the part of current when the real issue is that a lower impedance power supply is needed. A PDN with no inductance and unlimited current would not need a ferrite, so how to get there in real life is the challenge. With that said, ferrites are still great for stripping noise off signals headed for the connectors, etc.
Inventor(s): Yi Song (Plano, TX) Assignee(s): BlackBerry Limited (Waterloo, Ontario, CA) Law Firm: Fish Richardson P.C. (Local + 13 other metros) Application No., Date, Speed: 15092274 on 04/06/2016 (1007 days app to issue)
The place I got the CSA803 from replaced the battery for me before shipping. Its one of the few components that when you design it in you know for certain you are using something that will fail in 8 years or so. There’s a bunch of youngsters that give me crap that stuff I designed 35 years ago breaks from time to time, and then they tell me how they would have designed it better, including making better chips. :/
I test this at work, and it doesn’t work for very long. A bigger cap takes just as much longer to charge up as it buys you on the discharge side, so your minimum on-time requirement isn’t changed.
The global inductor market is highly fragmented and the major players have used various strategies such as new product launches, expansions, agreements, joint ventures, partnerships, acquisitions, and others to increase their footprints in this market.
Due to the dedication and engineering efforts of some coilers, solid-state excitation is now feasible, even in very large coils, and serious experimenters are beginning to feel the same way as broadcasters with regard to operating with anything other than a solid-state rig.
There’s one caveat – the BLE chip on the so-called “knockoff” is not a Nordic device. It is possible that they copied parts of the silicon design, but it’s also possible it’s a purpose-built chip, only for tracking purposes, that actually outperforms the Nordic device. If it’s the latter case, I’d readily call them a competitive device rather than a knockoff. Either way, the devices are not even using the same chipset, so I’d really have trouble calling one a knockoff. I find it difficult to somehow claim that a rectangular device with a battery and buzzer somehow has enough merit to be “unique.”
Well, you could add a larger capacitor after your charge pump to store the charge and drive the gate… Depending on size it could keep it going for quite a while, since MOSFETs don’t need that much current. Mind you, I have no idea if this works.
Abstract: A system and method for attaching a device to a user includes securing a first plate to a user. The first plate can be secured to the user, for example, via one or more straps and/or a hook and loop fastener. The system and method further include securing a second plate to the first plate, wherein an article of the user”s clothing is sandwiched in between the first plate and the second plate. The first plate and second plate may be secured to each other by a magnetic connection, by engagement of a sliding pin that pierces a portion of the first plate and the second plate, or a combination of a magnetic connection and an engagement of a sliding pin.
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An illustration from ROKA Sports' Patent No. D837871 shows a new design for sport eyeglasses. [Source image: USPTO]
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