But there's the basic idea a big analogue thing gives you a rough reading fast, and a digital one gives you an accurate reading slowly. Compare analogue clock face to digital watch. Compare analogue speedometer to digital.
Surely there are digital ones of those?
Much more likely 10. They've only been working on it since the early
1900s. every other aspect of motive power technology has moved ahead by quantum leaps and bounds while battery capacity has taken faltering bunny-hops,comparatively speaking.
But digital servos and arduinos make it SO much simpler!!!!!!
I think TNP has reached his ?new tech? limit.
The automatic headlights on my car are quite amazing. I haven?t worked out how the work but they?re a *lot* more sophisticated that a simple forward pointing photocell. I suspect some fairly serious image processing is going on.
Tim
An arduino is easy to program, has a/d converter built in, has native servo control, and is almost ideal for building an accurate analog meter of virtually any size.
I built an elevator trim control that could be controlled by a potentiometer (voltage reference) or up/down pushbuttons for an experimental aircraft using a quater scale servo and an arduino - under $100 for everything. A demonstration meter would be MUCH simpler and less expensive
Baker Electric
The car will go for about 4-5 hours on a single charge, roughly 25 miles an hour for 110 miles. This is still the range for today?s vehicles
Marketed as a form of women?s liberation, Electric cars did not have the dirtier aspects of a traditional vehicle of the time. They were not greasy, smelly or problematic to start up. Women could dress up and drive to lunch, visit friends or shop without fear of soiling their clothing or setting their dresses on fire.
Baker Electrics, Rausch & Langs and Detroit Electrics manufactured electric cars that were reliable across the board. They were even driven by the wives of major car companies. Clara Ford drove a 1914 Detroit Electric Brougham until the 1930s. Helen Joy, wife of the president of the Packard Motor Car Company, drove a 1915 Detroit Electric.
The Baker was a tall car, standing more than 7 feet tall. The car itself looks like a giant telephone booth. It had twelve 6-volt batteries under the front and rear covers to power the car?s 72-volt motor. Typically built with lead-acid batteries, customers had the option to use Edison alkaline batteries which were the result of a research program conducted at the turn of the century to create a lighter battery that was significantly more powerful and extended the range and speed of the Baker.
Replacing the lead plates and sulfuric acid, Edison batteries utilized iron, and nickelic oxide electrodes, and an alkaline electrolyte of potassium hydroxide. However, the first batteries out of production were prone to leaking and suffered electrode failure. Edison later closed the factory in 1905 and resumed production on the batteries four years later. As many owners express, the batteries still remain good to this day, you just rinse them out and replace the electrolyte and they are ready to be used again.
The car?s electric motor is roughly the size of a watermelon and is visible under the car. The motor drives the rear wheels using an enclosed-chain reduction system and a now-conventional driveshaft and differential. The car will go for about 4-5 hours on a single charge, roughly 25 miles an hour for 110 miles. This is still the range for today?s vehicles, a number that many car companies are hoping to increase.
While Baker had a lot to improve upon, especially when it came to aerodynamics, it was a revolutionary vehicle. Beloved by many, it hailed the turn of the century as a time of progress and ingenuity.
If you know how to use one, I've never even seen one. Do I have to use Linux?
And please stop removing the other groups, there are people discussing this in the UK and in an electronics group.
You did say anyone.
Substantial, I would expect.
They go into engineering in order to ensure they dont waste millions of other peoples money trying to invent stuff that will never work, because it cannot work.
BEVs are very mature technology. There is only a bit left to improve. Like aircraft and cars in general.
But believe what you will. Its nicer to beleive in warm cuddly optimistic s*it rather than face reality.
The best of them don't do it that way, they have electrically powered heat pumps.
Oh golly, a reversing camera with smarts! That will really increase the range
And what, pray *fundamental* difference does that make to the car?
Here we are with car with a battery we cant mine the minerals for with a range that is inadequate and a charge time that is excessive. I mean LETS ADD A SMART REVERSING CAMERA instead of solving the insoluble problems and call it 'new tech'
In my day we called it 'chrome, and tailfins'
God you are pathetic.
And how much has the increased the range?
You guys have to keep up. There is a huge incentive to have better batteries and soon.
Mention EVs and suddenly Charlie Duell pops up. In 1889, Charles H. Duell was the Commissioner of US patent office. He is widely quoted as having stated that the patent office would soon shrink in size, and eventually close, because? ?Everything that can be invented has been invented.?
We're coming full circle. My neighbor in CT had a Baker and it still ran well. He took it out a few times a year in the local parades.
Remember Ken Olson of DEC? He said the PC will never be popular as people don't want a computer on their desk. It was a silly idea.
In 1889, Charles H. Duell was the Commissioner of US patent office. He is widely quoted as having stated that the patent office would soon shrink in size, and eventually close, because? ?Everything that can be invented has been invented.?
No, you are pathetic. See my post about the new battery materials in the works. Sorry you cannot see the future. It will be fun for those of us that embrace it.
The raced has been on for over 120 years. Strides have been made, but there has been WAY more progress made on motor efficiency and controller efficiency in regards to EV range than in battery technology. Went from Lead Acid to Edison Iron - back and forth - then to NiCad and NiMh - and now various Lithium chemistries. Bunny hops in power density per lb and per unit of volume. They need to make about 5 or 10 times the progress in the next 10 years as they have over the last 120+ years to be better than gasoline by even a small margin for power density and recharge time.
The lead acid batteries in mine were free air cooled and the heat from the motor was adequate for defrosting in mild weather. I didn't drive it in the cold and doubt the heat would have been adequate. Perhaps if I had driven it HARD - which would have sucked the battery down pretty quickly. .48 volts, 165 Ah with today's batteries - I remember mine being 210 Ah for some reason.
They haven't spent 120 years with the type of research activity that is currently going on. There was little incentive for the kind of batteries (both EV scale and Utility scale) we're looking at today. Nor was the physics of energy storage understood as well as it is today.
Everything from supercapacitors to flow batteries are seeing rapid advances.
Have something to add? Share your thoughts — no account required.
Ask the community — no account required