A trend of misinformation about electric vehicles?

Islam
A blog posting recently made the rounds regarding a fatal design flaw in the Tesla Roadster. The blogger claims that some Roadsters have become "bricks", with non-functioning batteries requiring a $40,000 fix. The blog is dead wrong about most of the technical facts it claims to be reporting. Don't blame the blogger, however: he's only participating in a trend of misinformation about electric vehicles that is starting to impact the reputation of the fledgling industry.Here's the primary fact that the blogger in question doesn't understand: the Tesla battery pack is not a battery. It's a collection of more than 6,800 individual batteries. Each of those cells is independently managed. So there's only two ways for the entire battery pack to fail. The first is if all 6,800 cells individually fail…
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12V DC to 120/230V AC Inverter circuit with IC 555

Islam
This is a DC-to-AC inverter circuit diagram which produces an AC output at line frequency and voltage. The 555 is configured as a low-frequency oscillator, tunable over the frequency range of 50 to 60 Hz by Frequency potentiometer R4. Parts List: R1_________ 10K R2_________ 100K R3_________ 100 ohm R4_________ 50K potmeter, Linear C1,C2______ 0.1uF C3_________ 0.01uF C4_________ 2700uF Q1_________ TIP41A, NPN, or equivalent Q2_________ TIP42A, PNP, or equivalent L1_________ 1uH T1_________ Filament transformer, your choice The 555 feeds its output (amplified by Q1 and Q2) to the input of transformer T1, a reverse-connected filament transformer with the necessary step-up turns ratio. Capacitor C4 and coil L1 filter the input to T1, assuring that it is effectively a sine wave. Adjust the value of T1 to your voltage.The output (in watts)…
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Cryogenic Air Separation and Liquefier Systems

Islam
Cryogenic air separation processes are routinely used in medium to large scale plants to produce nitrogen, oxygen, and argon as gases and/ or liquid products.  Cryogenic air separation is the preferred technology for producing very high purity oxygen and nitrogen. It is the most cost effective technology for high production rate plants.  All plants producing liquefied industrial gas products utilize cryogenic technology.  The complexity of the cryogenic air separation process, the physical sizes of equipment, and the energy required to operate the process all vary with the number of gaseous and liquid products, required product purities, and required delivery pressures.  Nitrogen-only production plants are less complex and require less power to operate than an oxygen-only plant making the same amount of product.  Co-production of both products, when both are needed,…
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