ClipperCreek Looks To The Future With New 64 Amp Residential & Commercial EVSE | 19mm Momentary Push Button

There are numerous safe ways to do this, without reinventing the wheel. Like so: http://www.omega.com/pptst/HCS_HEATER.html (Need 240 mains? Hook two in series.) Precision control circuit can be found in the Data sheet for LM34 temp sensor. Uses an LM10 combo op-amp/ref to switch a solid state relay. Doc

While no standard is perfect, I have found that knowing the NEC and looking carefully at manufacturer listings and labels can save you time, your customers money, and help keep everyone safe.   

Also power the unit directly from the mains ( http://ww1.microchip.com/downloads/en/appnotes/00954a.pdf ) with the ability to power the unit directly with DC when (re)programming the ESP8266

It calls out a MOC3041M on the silkscreening. One can use a MOC3041 of course as they are the same form factor.

As explained elsewhere here, a major point of the Sony A33/55′s translucent mirror technology is to permit autofocus operation and image exposure to overlap each other, enabling very fast continuous burst shooting with accurate autofocus tracking. They in fact do a remarkable job of delivering 7fps or 10fps full-resolution shooting speeds, although in some respects, the experience is still rather different than shooting with high-end pro SLRs with that sort of burst capability. The heart of the difference has to do with what image the Sony A33 is showing you through the viewfinder at any given moment.

​So if I am looking to make the magnet more powerful, other than supplying more current, could I wire the primary and secondary coils of the microwave transformer together in series to get more turns (being mindful to keep the direction the current flows the same in both coils)? My thoughts are that it would increase the resistance a bit from the added wire but that the magnet would have a lot more turns. Am I missing something or am I onto something? Thanks in advance!

If a high-frequency current is large enough to be immediately painful, it’s large enough to immediately burn you, which is why hooking a tesla coil to a doorknob is rather dubious. It hurts, because it really hurts.

So far we have discussed your bench and associated equipment. We are not however quite done though, because there is one final component in keeping your bench safe: you. If you have a piece of equipment in front of you and you are about to open it up, the most significant part of your safety routine doesn’t lie with your equipment, but in how you approach it.

And if your primary and secondary are of different wire gauges, the thinner one becomes your limiting current factor. Wired in parallel gives the same ampere-turn count, but with less resistance, possible more AMPeres, so more aoere-turns.

And for the record, If I’m able to, I will breastfeed my children, because nutritional value, probiotics, and antibodies.

I would also use a solid state relay. And I would think about gluing the glass plate with high temp silicone to the PCB. This vastly improves thermal contact and so heat transfer which reduces peak temp and thermal lag in the control loop. Also it prevents exposed live wires even in case the glass breaks.

The control circuit for the 12V/24V can be as simple as a MOSFET and don’t even need to be isolated if you know what you are doing. Because you are using a regulated supply, the same heated bed can be used at different countries with different voltages. The safety regulatory stuff get you covered as 12/24V are considered to be low voltage.