What is back EMF? - Electrical Engineering Stack Exchange
Apr 27, 2021 · A big voltage potential, called Back EMF (E lectro M agnetic F orce) will let the flowing current to continue to flow, by ionizing the nearby air to become sort of a electricity conductor (actually a poor conductor, or high resistance), and the otherwise no where to go current would happily go through.
STM32 GPIO Speed - Electrical Engineering Stack Exchange
Feb 25, 2019 · Why do we need to set speed for GPIO Output pins in STM32? Just for remind : For Input pins, The STM32F4 Reference Manual on page 278 says that: The data present on the I/O pin are sampled in...
What is bit banging - Electrical Engineering Stack Exchange
Bit-banging SPI is relatively simple, the code for bit-banging I2C for instance will be more complex, and you'll need a timer somehow if you want to bit-bang the UART protocol.
current - So which direction do electrons really flow? - Electrical ...
Jul 24, 2018 · In what, a conductor, a diode, PNP transistor? The whole concept of an electron (and hole) flowing to create current, in itself is an abstraction. Both of them, in this context, are known as quasiparticles, which are an approximation of what the real electrons are doing. The confusing part is that we call the physical particle and the quasiparticle "electrons".
Possible causes for AAA battery to explode
Today, the AAA battery in my remote control exploded. The "pop" sound is pretty loud. I've been using this remote control for years, and I'm more inclined to believe that it is the battery issue ra...
High voltage capacitor discharge tool - Electrical Engineering …
Aug 23, 2021 · Recently, discharging 20,000 microfarads at 100V, hardly a remarkably large capacitance, by an accidental short with a screwdriver gave me a rather spectacular bang.
Why don't we make CPUs with 1000s of layers to make use of …
Jul 27, 2020 · For a typical computer, upgrading from HDD to SSD and upgrading RAM gives the biggest bang for the buck. There is a reason why advertisers point out the "BIG HERTZ" of CPU and gives you a computer with 2-4 Gb of RAM; the system will degrade very quickly and you will think you need a new one, when a $100 RAM upgrade will make it last another 5 ...
Do you need high voltage or current to produce a spark?
May 22, 2018 · With one big thick lead shalt thou connect the coil to the distributor! Then shalt thou connect the distributor to the spark plugs, and with big-arsed thick leads as well. And with much insulation shalt thou surround the leads, so that thy current shall not leak. Then shalt thou crank the engine, and it shall go bang at the right times!".
battery charging - Do I need to fuse batteries in parallel ...
Aug 28, 2018 · I have two deep cycle batteries in my Airstream, in the panel there is a fused bus bar (that appears to be faulty) so the solar panels only charge the one battery. Can I just run a heavy gauge wire
What happens when a ceramic bypass or decoupling capacitor …
Mar 8, 2022 · What happens when a ceramic bypass capacitor fails? I am picking out parts and is wondering is it worth the extra few cents for rated capacitors? Since generally most IC can function without a bypa...