Ameriprise Finl Com (AMP) Shareholder Fdx Advisors Has Increased Stake by $342,804; Fukoku Mutual Life Insurance Company Stake in Amazon Com (AMZN) Raised as Share Price Declined | Circuit Breaker Parts

253V above. The 3% voltage reduction equalled 5% of the load and 6% voltage reduction 10% of the load I seem to remember. Over 15 years ago.

I don’t approve of that design. It lacks the third relay, which means that if you plug into two circuits on the same phase, you get 0 volts between the two hots, but both are still 120 volts away from ground. That means that the equipment doesn’t work, but it’s not safe to poke at. I prefer to insure that the 240 volt outlet is guaranteed to either be completely dead, or properly powered.

First off, I would set the system up more like a safety-critical system. I would have an independent, segregated processor running the heated bed. I would have checks in the system processor and re-checks built into an independent circuit built from discrete analog/digital circuits on the system. I would use two, independent temperature sensors on the board, plus at least one thermal fuse, as well as one overload protection mechanism (most likely a fuse).

The gate resistor will eventually short to the trace after so many cycles. It may take a while, but it will eventually happen. We had that problem years ago with a product. Resistor has to be lifted up above the trace. Traces and such seem fine for 120VAC for low current loads. Wouldn’t pass muster overseas.

I started my hacking adventures decades ago with vacuum tubes and high voltages, and have to say that this is an excellent and important article. I’m not sure of the country of the author, but one piece of translation for those just getting started. The “Residual Current Circuit Breaker” here in the U.S. is called a “Ground Fault Circuit Interrupter”; but, provides the same protection. Another more recent protection innovation is called the Arc Fault interrupter and actually contains DSP type circuitry to determine if a dangerous arc is present on the line. Flipping a light switch or running a small motor creates an arc; but, the AFCI can tell the difference between that source and a frayed power wire that could overheat and start a fire. The largest voltage I’ve ever worked on was an amateur radio linear amplifier that ran 2600 VDC @ 600 ma for the finals, which brings me to the main point of this post. One additional rule: Always keep one hand in your pocket or one finger hooked in a belt loop. While it makes handling equipment more tricky, it keeps the power from having a path across your chest, which is also across the heart and lungs, which are electrically operated and can be severely damaged or stopped. BTW, I love the image of the sign/sticker in this article which hit’s the nail right on the proverbial head.

http://www.canadiantire.ca/en/automotive/interior-auto-accessories/winter-accessories/automotive-accessories/polar-pad-engine-heater-125w-0300004p.html

It’s also worth noting that some of the quibbles, such as wind noise and the slightly fidgety ride, are still being worked on. What appears to be a good car could yet get even better.

A path is the key. To be thrown across a room and to be banged up, ie bashing into a wall, must have been a low current high voltage event that made a path!

Nose Relief. The Sony A33′s viewfinder eyepiece projects back a bit, leaving a bit more room for your nose.

My Tesla Model 3 came a week ago, Thursday, and I traded in my Volt. So, I swapped out the NEMA L6-20, for an Eaton box with NEMA 14-50 receptacle, 8ft of 6-4 wire, and a 50 amp double-pole breaker. About $75 at Lowes. Yes, the Tesla came with a L2 EVSE that charges at 32 amps. You could buy the Tesla HPWC for $350, I think, but it’s totally not necessary for most.

I flashed Tasmota firmware onto the Sonoff, and configured GPIO2 as a counter, and I now have the whole setup reporting to Node Red, which switches the pumps on and off on schedule, or as desired. I’m quite chuffed with the result, although now I need to learn a lot more about how Node Red works!

The new CMOS image sensor in the Sony A33 features on-chip column A/D conversion, which helps increase readout speed. It also includes the same on-chip analog and digital noise reduction that featured previously in the Sony A900. The Sony A33 also sports an updated BIONZ image processor, with reworked algorithms to allow its signature high-speed burst shooting, plus digital compositing and Full HD movie recording. The Sony Alpha A33 offers sensitivities ranging from ISO 100 to 12,800 equivalents, and can automatically select an ISO sensitivity between ISO 100 and 1,600 equivalents.