Move to the far North of Canada for my CO-OP term for school and decide to create a youtube project channel. Eventually I'll be designing my TR project and would love the community to contribute.
2:45 so is that why when I plug in my ebike charger pops in the socket ? because I don't have the battery attached to the charger before I plug in the thing in the socket... so what's the best way to do it ? plug into the battery and then socket ?
That's because capacitors initially act like a short circuit, only held back by their ESR and ESL. So, when you apply voltage, they draw an inrush current, which depends on the resistor in the circuit. That’s often what causes the spark. Connecting the battery first and then plugging it in won’t really help because we’re dealing with a switching converter. If this were a capacitive dropper, not having the battery would leave the circuit open, and you'd be dead by now, and capacitive droppers also puts input voltage (mains voltage) across the load during startup (again, they act like a short-circuit) until they're completely charged up. So while the advice to "connect to the battery before the socket" won’t stop the spark and pop, it’s still suggested to connect and secure the load first. This can prevent any contact bounces that might stress out the AC-DC buck converter (that's usually a DC-DC converter with a full-wave bridge rectifier and a huge filter capacitor). If you want to reduce the spark, you could try adding a small inductor to limit the current consumption at startup, though that might also cause a spark when the load disconnects or switches. The most reliable method is to use a soft-starter. A simple NTC thermistor can do the job, but it will continuously waste power. Plus, you'll need to check if the thermistor is hot; if it is, you shouldn’t turn on the load (like in situations where power comes back on after a few second outage). Using an auto-transformer to slowly bring up the load might work, but keep in mind that at lower voltages, the buck converter could be under more stress due to higher current demands. So overall, a fast ramping soft-starter can be be used to reduce the sparks! Secure the battery in place to reduce any contact bounces and sparks from the battery which can cause wear and tear to the contacts, causing heat and burnout in the future.
But how does this work? When we apply AC voltage, what happens first? It flows via caps in one direction first, then in other? How does the caps get charged, if they are connected opposite to each other? How current flows from - to + ? As far as I know it isn't allowed to apply voltage to a polarized cap in reverse polarity. Never explained. Please, someone help understand the principle.
I have those pliers and the 7-in-1 version from Milwaukee and heck yeah they are good pliers for what they are and they come in handy for what they are also.
If you are going to compare pliers they should have the same handle. If you use cobra handles for Knipex then use journeyman handles from Klein or just use silicone grips on both.
You not comparing apples to apples. 8 inch needle nose to 6 inch needle nose. Klein also makes journeyman series and the handle is a closer comparison. The knipex are great but more delicate smaller tip. The Klein cut better and are more robust. Both are better in certain applications.
You can improve your circuit by using diodes instead of resistors across the capacitors. The ratings of the diodes have to be appropriate, the cathodes connect to the positive side of the capacitors. I have used this for motor starting a couple of times and it worked fine, the capacitors are only in the circuit for a second or two so it's not a problem.
Kleins are excellent tools, used them for 30 years. But now i discovered Knipex, thats a whole new pleasure that brings me back to my first job after school, i had cheap pliers and the company i worked for (Alcoa in Brazil) issued me a pair of Gedore combination pliers and German tools are another level. knipex till i hang the bag for good!
The Knipex high leverage combination pliers com in a few different sizes. You got the largest one so naturally it will be a little longer then the Klein’s. Maybe a better comparison would be their 8” ones in the 200mm size.
Handle color to identify tools…I’d rather have all my tools match and store them blade up so it doesn’t cut my expensive veto bag. When you load a dishwasher, you load the utensil basket sharpe side up. I’m glad at least you mentioned you do the same. I have no clue when guys jam sharpe tools into a canvas pocket and then cry when they’re bags rip.
Holy Crap. Why the hell is actual electric blueprinting so stupidly, needlessly, redundant? Like, is it just me or do you actually need to learn an entire language of terms that literally no one else uses just to understand electrical circuits?
