How to Fix a Broken Air Conditioner | Circuit Breaker Parts

But despite them being ‘commercial’, they’re still pretty hideous bits of cheap Chinese kit that I wouldn’t trust as far as I could throw them.

The use of isolation transformers that is suggested here is very dangerous as the residual current detector of the installation won’t detect anything if one gets electrocuted from the secondary of the transformer. I’d rather not use an isolation transformer unless I really need.

Like many things, it’s the few psychopaths who spoil it for the rest. For most people, it’s quite possibly an emotional disability.

The second upgrade to the Sony A33′s LCD is the TruBlack technology we first saw on other recent Sony cameras. This is a combination of anti-reflective coatings and a darker mask around the LCD pixels, to keep shadow areas darker. It does seem to be an improvement over LCDs lacking it, but to my eyes, the difference isn’t dramatic.

And the MOC3041 can not handle a 1 amp load, “Peak repetitive surge current” is what it can handle for 0.0001 seconds at every 60Hz cycle before getting (possibly) damaged. The continuous load limit is far less than 1 amp.

As far as litigation goes? I know enough about Chinese law to know that it’s really up to Fotek and whether Fotek applied for trademarks in China or not, and whether they did the rest of the intellectual property legwork in China (which is really tricky because China doesn’t use common law like Western countries do, so it’s a harder system to navigate). If they did, then yea, the counterfeiters could probably be sued although it’s a whack-a-mole game, the counterfeiters come up faster than they can be whacked down. But if Fotek didn’t go through the China IP process to protect their brand, then the counterfeiters may have actually applied for the trademark themselves in China, gotten the right to use the name, took the likeness and everything, legally (at least in China). Best Fotek could do at that point is try to keep them from being imported into the USA (similar to the Sparkfun fluke-colored DMM’s a few years back) but again that’s a whack-a-mole game that they wouldn’t win.

Step 4:  Use the V-I curve (Fig. 3) in the MOV’s datasheet to verify that leak voltage will be less than the 300-V ceiling.

Jamie Spinelli’s job as a case manager for Community Services Northwest takes her to parks, homeless shelters, the jail and…

If you wrap your own coil, consider wrapping a thermistor or thermocouple into the windings. Insides may heat up before outsides. Expoxies have limits. You don’t want failure halfway up 50 stories, whether mangni-shoes or a load of pig iron.

The Sony A33 offers a lot of control for shooting contrasty subjects. Dynamic Range Optimizer (DRO) adjusts contrast and brightness to optimize the camera’s use of available dynamic range. Auto HDR modes use three quick shots to cover an amazing tonal range. (The shot on the right represents the maximum range of 6 EV.)

“AC is safer than DC. You can let go of two AC terminals but not DC as DC keeps your muscles clenched. AC doesn’t. ”

There are people that play with high voltage stuff like Tesla coils, induction heaters etc. Now those know enough to respect high voltage.