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Showing posts from February, 2023

The Xfinity Prosumer: Internet Price and Performance

We all read the ads and have seen "reviews" about Internet service provider costs and performance, but it is 99.99% advertising and affiliate link disinformation. The Speed You Need Most people think they need a gigabit download performance for great Internet performance.  This is nonsense.  Most people are restricted by upload speeds, not download speeds. Why?  Because upload speed is almost always the bottleneck. Some examples of where upload speed is critical: Zoom and other video calling technology VoIP telephone calling Online real-time gaming Some examples where download speed is just not important The number of devices you own Streaming video  Streaming audio All these technologies have a need for timely packet delivery, and with upload speeds being relatively slow, this is where nearly 100% of bottlenecks occur.  If your video call or game isn't behaving well, you've almost certainly saturated your Upload performance. So let's take a look at the Comcast ...

Loving my SHNITPWR Adjustable DC Power Supply

I find or acquire a whole bunch of used electronics, and they often don't come with a power supply.  My adjustable power adapter solves this problem.  It's a pretty cheapo SHNITPWR Adjustable Power Adapter .  Yes, that is the name! For about $20, it solves a whole bunch of "I don't have the power adapter" issues. The Strategy of the Adjustable Power Adapter  The basic information I need to power a device includes the following: DC or AC current Voltage Polarity (center-positive or center-negative) Amps  Once I have all this data, then I configure my adjustable power adapter accordingly and plug it in!  If I find that the device is working appropriately and has some value to me, then I will buy a standard aftermarket power adapter from Amazon of the correct specifications. So what if I don't know this critical information?  Easy!  Strategy 1: Look at the label! I look on the device in hope that it shows the exact power spec.  Sometimes it...

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