New Hybrid Technology

[MWR]

Originally Posted by Nash270

Of course someone with tesla as their picture will be weighing in on a discussion about AC power

...but explain this idea of needing AC to charge a cap? Im either missing part of the discussion or this is wrong. You Can charge a capacitor with DC, Capacitors are used in AC primarly for rectify circuits and Filters in signal processing. ( however their are MANY other uses). Capacitors are used in DC circutis on a regualar basis for voltage regulation. Capacitors Discharge DC curret as well.

Or they could just eliminate all this stuff and install a flux capacitor. Once you get the flux capicator fluxing, you are home free.

Or so they say.

[Nash270]

Originally Posted by MWR

Or they could just eliminate all this stuff and install a flux capacitor. Once you get the flux capicator fluxing, you are home free.

Or so they say.

that works too, they just better pimp the delorean, i need some rims.... somebody call Xzibit

[Rasputin_Vol]

Originally Posted by Nash270

Of course someone with tesla as their picture will be weighing in on a discussion about AC power

...but explain this idea of needing AC to charge a cap? Im either missing part of the discussion or this is wrong. You Can charge a capacitor with DC, Capacitors are used in AC primarly for rectify circuits and Filters in signal processing. ( however their are MANY other uses). Capacitors are used in DC circutis on a regualar basis for voltage regulation. Capacitors Discharge DC curret as well.

The capacitors are used at the load side of rectifiers to smooth out the DC output. If you had no caps at the load side of the rectifiers, the waves would look like this...



The dashed lines below the zero axis represent what the normal/unrectified waveform looks like on the input side (sinusoidal).

With a capacitor in the circuit, you are still "charging" the caps with an AC signal, but only now, the capacitor is able to maintain the voltage close to the wave peaks before it gradually discharges.



As you can see, the output of the waveform is relatively more steady. Once the wave form reaches it's peak in this second graph, the capacitor begins to discharge at a rate that is slower than the rate it would decay in the the first graph. The capacitor both levelizes the output voltage of rectifiers (removes the noise) and also is able to maintain the peaks for a longer period of time.

Of course, we are talking about at 120 hz (double what is normal for unrectified 60 hz signal)...

[MWR]

Originally Posted by Rasputin_Vol

The capacitors are used at the load side of rectifiers to smooth out the DC output. If you had no caps at the load side of the rectifiers, the waves would look like this...



The dashed lines below the zero axis represent what the normal/unrectified waveform looks like on the input side (sinusoidal).

With a capacitor in the circuit, you are still "charging" the caps with an AC signal, but only now, the capacitor is able to maintain the voltage close to the wave peaks before it gradually discharges.



As you can see, the output of the waveform is relatively more steady. Once the wave form reaches it's peak in this second graph, the capacitor begins to discharge at a rate that is slower than the rate it would decay in the the first graph. The capacitor both levelizes the output voltage of rectifiers (removes the noise) and also is able to maintain the peaks for a longer period of time.

Of course, we are talking about at 120 hz (double what is normal for unrectified 60 hz signal)...

Of course!

[volinbham]

For those wondering about the acceleration potential of electric cars:

YouTube - Electric Drag racing: White Zombie

Instant full torque is pretty appealing.

[MG1968]

Originally Posted by volinbham

For those wondering about the acceleration potential of electric cars:

YouTube - Electric Drag racing: White Zombie

Instant full torque is pretty appealing.

it works great as long as there's a full charge in the batteries. The big drawback to batteries is that they're nowhere near as effective at 1/4 to 1/2 charge. As long as a gasoline engine has fuel, it will run just as fast at 1/4 as it does with a full tank. Perhaps even faster since it's slightly lighter.

[Nash270]

i agree rasputin, learned about rectifying and time constants, in Circuits 1 (but it has been awhile). I didnt have the context of the earlier post, but that earlier post with out the context is not entirely true.

Yeah Electric cars are WAY more efficent (than combustion engines) at acceleration. I cant jump for the youtube vid, but their are videos of a car running solely off laptop batteries that can beat a high-end sportscars in a quarter-mile.

[WA_Vol]

Chevy Volt 230 mpg: Chevrolet Volt's official fuel economy: 230 mpg - Aug. 11, 2009

[droski]

didn't obama's team tell us just a couple of months ago that the chevy volt wasn't viable?

[MG1968]

Originally Posted by oklavol

Chevy Volt 230 mpg: Chevrolet Volt's official fuel economy: 230 mpg - Aug. 11, 2009

wait til it hits real world applications.

and by "real world" I don't mean a single person who has a 5-mile commute to work with the occasional weekend jaunt to a golf resort 30 miles away. The Volt is, admittedly, perfect for such a person, but only if you can rationalize it's high price tag.

I want to see a family of four who lives in Pittsburgh who makes regular trips to Cleveland, OH or Charleston, WV.

[droski]

the ridiculous part of this is that it's basically a electric car, not a hybrid. you still have to plug it in every night and god knows what that will do for your electricity bill. is the mpg even relavant?

[Plano Vol]

Originally Posted by droski

considering 70% of all electical production comes from coal i'm not sure an electric car fits team obama's agenda

Agreed from the carbon footprint point of view but I would much rather pay for domestic coal than foreign oil.

[droski]

Originally Posted by Plano Vol

Agreed from the carbon footprint point of view but I would much rather pay for domestic coal than foreign oil.

i'd rather be paying for domestic natural gas or nuclear.

[Pepe_Silvia]

Originally Posted by volinbham

For those wondering about the acceleration potential of electric cars:

YouTube - Electric Drag racing: White Zombie

Instant full torque is pretty appealing.

I wonder what an electric engine sounds like when it's revved up. Like a wind-up toy or something?

[MWR]

Originally Posted by Vol_4_Life

I wonder what an electric engine sounds like when it's revved up. Like a wind-up toy or something?

Probably sounds like one of those old popcorn poppers with a little motor that stirs the popcorn while it is popping.

If you have the ear for it, the sound of a well tuned internal combustion engine revving up is music to your ears.

Someday they may develop a recharging beam, firing down from a satellite, that will refuel your electric car while you drive down the road. Of course, the first bird - or airplane - that flew into the beam would be toast, but as the old saying goes, "Progress has a price."