This robot uses AI to find Waldo, thereby ruining Where’s Waldo | Lrd12 Overload Relay

Did you keep records so that you actually know you repaired 15,000 TVs? I don’t believe it, and if it is not true then I doubt your other statements on this evidence alone. People should classify their statements as to fact, fiction, or opinion, not just leave them in an ambiguous interpretive limbo.

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As someone who started playing with electronics in the days of B+ in the 350VDC range with double that across the main xformer’s secondary, I was utterly appalled at the idea of tying myself to a hard ground when working with some of the newer (for the time) solid-state stuff that was coming out. We had a respect for high voltage then that is often missing these days, this article is an excellent reminder that this is still needed.

You are correct and if you design this type of solution you already know this. With PCB design, the alternatives are heavier copper, wider traces, plating up copper in the areas that carry heavy current or a combo of any of the three. But you can only go so far with these solutions. Hack apart a known good SSR and I bet they use the exact same solution.

Reading the related article will help you to not jump with such conclusions. It is stated very clear, to BE USED WITH FUSE!. Is no fuse on the board because the FUSEs module is separate from the command board. Just some common sense modular desing.

No, he is using a MC3041 to drive a BT137 which can handle 8 amps continuously (if properly heatsinked).

Aluminum wire has a lower ampacity than the same gauge copper wire, meaning aluminum must be larger to accomplish the same ampacity job as copper wire. The rule-of-thumb sizes rely on the lowest allowable temperature rating of the wire; in some cases, the circuit may have a higher ampacity if the insulation on the wire and the connection endpoints are all rated at 75°C (167°F) or 90°C (194°F).

There’s one more multi-shot feature on the Sony A33 that’s worth mentioning; namely Auto HDR (High Dynamic Range). HDR photography increases the range of brightness values represented in a scene by combining two or more shots taken at different exposures, combining highlight detail from some and shadow detail from others. In the past, this has involved locking the camera down on a tripod, shooting several images at different exposures, and then working on a computer to combine them. Lately, though, the capability to do this directly in-camera has been appearing from a number of manufacturers, with varying levels of success. The auto HDR feature on the Sony A33 works pretty well, since the camera does the same micro-alignment trick it uses for its other multi-shot features. Options for HDR include an Auto setting, where the camera determines how much of the effect to apply, and manual settings ranging from 1 to 6(!) EV of exposure range.

With this kind of economy available, I don’t care a bit about all-electric cars. I’m having my cake and eating it, too. Any EV with a sufficiently large battery to meet my traveling needs would be carrying too much unnecessary battery weight (and expense and charging time) to suit my local shopping and errand needs. So the future is already here, and it’s bright. I haven’t felt the need to upgrade my home charging, either. The car recharges in five hours, and I try to get at least that much sleep every night.

around the town of Wentworth in New South Wales the feral pigs are huge, there are lots of them, the scrub is very thick and even back in those days you were not allowed to use a semi automatic centre fire rifle of any kind. The boar in question had lower tusks that were 5″ long.

A relay with its contacts can take some inrush current. I found value’s between 15A and 30A for a typical 10A relay. Some datasheets even specify motor load with FLA and LRA (locked rotor amp, the max. value you get at start up.

It is not enough to have the proper tools, you also have to use them in a safe way. The basic five rules go like this: 1. Disconnect from mains. 2. Secure against reconnection. 3. Verify that the system is really dead. 4. Perform earthing and short circuiting. 5. Provide protection from nearby live parts.