AI News, Robotics/Components/Power Sources
- On Thursday, October 4, 2018
- By Read More
Though perhaps other power sources can be used, the main sources of electrical power for robots are batteries and photovoltaic cells.
Alkaline batteries are much cheaper and sufficient for most uses, but lithium batteries offer better performance and a longer shelf life.
Ni-MH batteries come in common sizes such as AA, but deliver a smaller voltage than alkaline batteries (1.2V instead of 1.5V).
Lead acid batteries are relatively cheap and carry quite a lot of power, although they are quite heavy and can be damaged when they are discharged below a certain voltage.
simplest solution    is to run the microcontroller on a separate set of batteries.
The voltaic pile was constructed from discs of zinc and copper with pieces of cardboard soaked in saltwater between the metal discs.
Most batteries have two terminals on the exterior, one end is a positive end marked “+” and the other end is the negative marked “-”.
Once a load, any electronic device, a flashlight, a clock, etc., is connected to the battery the circuit being completed, electrons begin flowing from the negative to positive end, producing a current.
the battery there is a chemical reaction going on producing the electrons to flow, the speed of production depends on the battery’s internal resistance.
Electrons travel from the negative to positive end fueling the chemical reaction, if the battery isn’t connected then there is no chemical reaction taking place.
Once the battery is connected from positive to negative pole, the reaction starts, that explains the reason why people have gotten a burn when a 9-volt battery in their pocket touches a coin or something else metallic to connect the two ends, shorting the battery making electrons flow without any resistance, making it very, very hot.
A typical lithium-ion battery can store 150 watt-hours of electricity in 1 kilogram of battery.
A NiMH (nickel-metal hydride) battery pack can store perhaps 100 watt-hours per kilogram, although 60 to 70 watt-hours might be more typical.
Using lead-acid technology, it takes 6 kilograms to store the same amount of energy that a 1 kilogram lithium-ion battery can handle.
And a SMALL chance they could burst into flames (internal short, separator sheet inside battery keeping the positive and negative ends apart gets punctured).
The anode, the positive end, is made of zinc powder because the granules have a high surface area, increasing the rate of reaction and higher electron flows.
Canisters on their own pose additional risks: Air escaping from a pressurized canister can freeze whatever happens to be in its way.
- On Sunday, January 20, 2019
15 Mistakes That Shorten the Life of Your Phone
How to charge the battery correctly? Why do the phone batteries decrease so quickly? We have 15 amazing tips that will make your smartphone live a longer life ...
The Truth About Wireless Charging
Be one of the first 73 people to sign up with this link and get 20% off your subscription with Brilliant.org! Listen to our new ..
Scientists’ Crazy Plan to Power Solar Panels with E. Coli
New biogenic solar cells could be cheaper and more efficient than current solar technology. Here's how they work. Your Gut Microbes Are Controlling Your Mind, ...
Are all battery banks built the same? - Head to head ~5000 mAh Showdown!
Does brand matter when it comes to battery banks? Sponsored by dbrand. Check them out at Pricing & discussion: ..
Electrochemistry: Crash Course Chemistry #36
You can directly support Crash Course at Subscribe for as little as $0 to keep up with everything we're doing. Also, if you ..
Do You Get Battery Anxiety?
3% Battery Remaining…... Support us on Patreon! We got merch! Tweet u
These Squishy Batteries Are Made Out of Water, Here’s How They Work
Electric eels and origami inspired scientists to create a soft battery that could revolutionize soft robotics. Here's what you need to know. This New 'Perfect' Battery ...
3 iPhone Battery Problems and How To Fix Them
iPhone suffering from sudden shutdowns? Seem like it can't hold a charge? Does it feel like it's burning when charging? Here are some fixes for your problems.
AGM Battery Restoration - Absored Glasss Mat - Northstar Optima Odyssey - Bundys Garage
Absorbed Glass Mat (AGM) batteries get to a point where they will not charge because they are below 8V - 5V, be that a Northstar, Odyssey, Optima, Deka, ...
Lec 10: Batteries and EMF | 8.02 Electricity and Magnetism, Spring 2002 (Walter Lewin)
Batteries - EMF - Energy Conservation - Power - Kirchhoff's Rules - Circuits - Kelvin Water Dropper This lecture is part of 8.02 Physics II: Electricity and ...