We first saw this feature in Sony’s DSC-TX1 and DSC-WX1 in mid-2009. Since then, it’s been mimicked by other manufacturers, but none seem to do it as well as Sony. In Handheld Twilight mode, the camera captures up to 6 shots in rapid succession, micro-aligns them with each other, and then adds them all together. The net result is that you can hand-hold ridiculously long exposures and still get sharp results, with very low image noise to boot. Combine this with Sony’s SteadyShot image stabilization and sharp handheld photos at half-second exposure times are feasible.
In the case of an opto-couple my ‘rule of thumb’ is for the min to be the distance between the pads on left and right rows of pins. ie nothing under the opto at all apart from the pads connecting the pins.
You really should drop the 110/240 volts statements and use 120/240 volts for residential installs. I don’t think 110 volts has been used since Thomas Edison.
And don’t trust the 15KV gloves you pick up a Dayton Hamvention for $20. There’s a reason they’re so cheap, unless you certify them they’re just as bad as having nothing at all due to unknown defects and misplaced trust.
But don’t believe brand names are any better, especially if you buy them from eBay or Amazon! There is too much profit to be made remarking parts to trust any of these type parts from anyone but a major distributor like DIGIKEY or MOUSER Electronics.
Indeed, I did a HV Course at a functioning power station where once you had isolated an 11kV switchboard you had to grab hold of the bus bars to show the other workers it was safe to carry out their work.
Even if a business without a license can charge you less, it’s worth looking for a licensed electrician like me. Most states require professional electricians to be licensed, so a person without one is a red flag. He or she might not have insurance and could stop picking up the phone if something goes wrong. As a licensed electrician, I will be held accountable—which is good news for my customers. Check out these other 35 things every homeowner needs to know.
No, because they are opposite phase. In this setup the neutral wire doesn’t carry any current, so the same 15 amps goes through both hot wires.
Why do the US still use 110v mains and 20A room circuit breakers? Those currents are dangerous, not the volts.
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And for the record, If I’m able to, I will breastfeed my children, because nutritional value, probiotics, and antibodies.
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