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5 Ways to Get Drivers to Stop Texting

Le 4 août 2015, 09:30 dans Lifestyle 0

More and more passengers are speaking up about texting and driving. If a texting driver is making you nervous but you're not sure how to bring the topic up, here are some ideas:

    The direct approach. Say, "I'm sorry, but I get really nervous when people text and drive." Wait to see how the person responds. Most people will admit it's probably not a good idea or they'll at least put down the phone.
    The subtle approach. If you don't feel comfortable telling a driver to quit texting outright, try hinting:"Would you like me to type for you since you're driving?" Or kanger aero tank mow , since more states are handing out tickets for texting and driving, you could say, "I've seen a lot of cops out today, you might not want to text right now." Or point out things the driver has missed seeing (or narrowly missed hitting). As in, "Did you see that dog/kid/overturned bank truck?"

    If you know the person your driver is texting, ask the driver to hand over the phone so you can say something. Then send a message that says, "Driving, talk to you later."

    If your driver teases you about being nervous, it's the perfect opener to say, "Yeah, texting and driving freaks me out. You never know if the person in front or behind is doing it too."
    The "Wow, look at that bad driver!" approach. Point out drivers who wander into the next lane, drive 45 on the highway, run a stop sign, or stop at a green light. Then make guesses about who they're texting. Or make up a variation on the punch buggy game, awarding points each time you see a driver who seems to be texting (this has the added benefit of forcing your own driver to focus on the surroundings, not the screen).
    The group approach. If your whole group thinks a driver is a hazard, make a plan together. Take away the driver's car keys: It's what you're supposed to do with drunk drivers, and studies show that texting drivers are even more dangerous. Or agree not to ride with that person. If several people boycott a driver, he or she will get the message.
    The life-saving approach. If someone continues to text and drive or mocks you for worrying about it, avoid riding with that person. Let texting drivers know you're cutting them off (if you feel comfortable doing so) — a little shame makes people think twice about bad habits.Kangertech Aero Tank Mow 1.8ml 2.0ohm Atomizer E-cig Rebuildable Cartomizer at http://www.bullecig.com/kangertech-aero-tank-mow-atomizer.html Or say something like, "My dad told me I can't ride with you because he says you text and drive."

    Speaking of parents: As we all know, it's not just young drivers who text. If you're stuck in a car with an adult who is texting (or tweeting or emailing) behind the wheel, be direct and tell them to stop. Most adults know that parents are constantly telling kids not to text and drive, so they should feel embarrassed enough to put down the phone.

If a driver absolutely won't stop texting or laughs at you for being nervous, don't argue. The last thing anyone needs is a road-raging, texting driver. Get out the car as soon as you can. Next time that driver offers to give you a ride, say, "no, thanks."

What to do if you relapse after quitting smoking

Le 28 juillet 2015, 10:53 dans Humeurs 0

Many people who quit smoking relapse at some point. Don't be put off trying again. The key is to learn from what went wrong so you're more likely to succeed next time.

When you quit smoking, it's important to be positive and really believe that you'll be successful. You shouldn't expect to start smoking again.

But some people who try to quit will return to smoking the way they did before, usually in the first few months.

If you do relapse, don't worry, it can take a few tries eGo Leather Lanyard to quit smoking for good. That's not to say you shouldn't take relapse seriously – but don't be too hard on yourself either.

The more times you try to quit, the better your chances of success. So, look on a relapse as 'practice' for stopping smoking.

Preventing stop smoking relapse

Why is it that some smokers who quit fall off the wagon?

The main reason is giving in to cravings. These are powerful urges to smoke, often triggered by stress, seeing other people smoking, getting drunk or emotional events such as arguments.

The best way to withstand cravings is a combination of stop smoking medicines and behavioural changes.

It's also important to stay away from people who smoke. Nearly three quarters of all quitters who relapse do so in the presence of people who are smoking – usually after having asked one of them for a cigarette!

Help for stop smoking relapse

Avoiding a relapse is best, but if you do yield to temptation, don't despair – it can take several tries to quit smoking for good. You've tried before and this experience can help you now.

If you've had a cigarette or two:

    Don't give up on quitting. You can still avoid a full relapse. Throw the rest of the packet away and continue your quit attempt.
    Remind yourself why you want to quit. Then take control again.
    Get support. Call the free NHS Smokefree helpline on 0300 123 1014 to speak to a trained adviser. Lines are open Monday-Friday 9am-8pm and Saturday & Sunday 11am-5pm.
    Make it hard to smoke. Avoid places where you can easily ask someone for a cigarette. And don't buy a packet.
    Stay strong. If you're tempted to smoke again, force yourself to wait two hours. Then decide if you really need the cigarette.
    Keep taking any prescribed stop smoking medicine or using NRT unless you go back to regular smoking. It can help you get back on track. Buy and wholesale top quality eGo Leather Lanyard directly from BULLECIG factory shop. Enjoy http://www.bullecig.com/ego-leather-lanyard.html our best service.

If you've relapsed and are back to regular smoking:

    Don't become despondent. Set a new quit date, maybe in a week or so.
    Learn from your mistakes. What caused you to slip up? Think of ways you could have avoided smoking. Work on your coping skills so you're prepared next time you're in the same situation.
    Talk to your doctor or NHS Stop Smoking Adviser if you need more help to cope with cravings in your next quit attempt. Read how an NHS Stop Smoking Adviser can help you quit.
    Stay positive. You're learning how to quit cigarettes. Remember, you'll be stronger next time because you'll know what to look out for.

C-V measurement challenges in validating power-semi designs

Le 23 juillet 2015, 11:52 dans Humeurs 0

High-voltage capacitance-voltage (HV C-V) measurements are an increasingly important for characterizing the latest generation of wide-bandgap power semiconductor devices because the measurements are useful in predicting such key dynamic device characteristics as switching time and gate charge. But making HV C-V measurements on power semis is no trivial task. The high voltages demand extra precautions for personal safety, to deal with system capacitance issues, and to protect instruments from over-voltages.

HV C-V measurements require use of a carefully selected bias tee, a device that combines the high-voltage bias signals from an SMU instrument with ac measurement signals from the capacitance instrument, at the same time isolating the instruments from each other. The capacitor of the bias tee blocks the SMU instrument from interfering with the capacitance meter; and the inductor blocks the C-V meter from interfering with the SMU instrument.  Since a power semi’s capacitances are a function of voltage, Kangertech Aero Tank Turbo Atomizer to obtain a complete picture of device switching behavior, designers need to measure capacitance up to the maximum voltage of the device.

Tees for C-V measurement
Typical RF-instrumentation bias tees have drawbacks for power semi testing. These tees are designed only for ac measurements, operate over a specific frequency range, and have a coaxial design. Characterizing power devices, however, demands making a number of other measurements, both on-state and off-state. Making off-state measurements, such as characterizing a device’s zero-gate-voltage drain current (IDSS), are particularly difficult to perform through a coaxial bias tee, because they often require measuring current at microamp or nanoamp levels. Traditional coaxial bias tees have high leakage, which often results in a noise floor that’s higher than the device measurement. In order to measure these low currents, test engineers have typically been forced to perform dc I-V measurements first, then have to re-cable and re-configure the system for C-V measurements. Obviously, this approach is less than optimal: constant recabling/reconfiguration is both time-consuming and prone to errors.

A better solution is a multi-mode triaxial bias tee that can remain in place for both C-V and dc I-V measurements (fig. 1). The triaxial design ensures more accurate low-current dc measurements because the SMU guard is the triax inner shield and the ac Return/Ground is the triax outer shield. The triaxial bias tee minimizes the need for connection changes at the probe side of the device interface. In addition to low leakage, this design offers switches that let users configure to optimize the path for the desired type of measurement. With the appropriate software, theses switches can be configured automatically for the measurement desired. The connections between the output of the bias tee and the DUT are the same for both I-V and C-V measurements.

Capacitance capacity
Measuring the capacitance between two device terminals on 3- and 4-terminal devices is another significant challenge, because parallel capacitance paths and large ratios between device capacitances have a significant impact on measurement accuracy and resolution.

Those evaluating MOSFETS in switching power supplies are often interested in the circuit-level capacitances—the input, output, and transfer capacitances—which are combinations of the terminal-level capacitances (fig. 2). Capacitance measurements on power devices like MOSFETs are challenging because the capacitance to be measured is interconnected with other device capacitances. The ratio between capacitors also affects measurement accuracy, as illustrated by the challenges associated with measuring a power MOSFET’s input capacitance (CISS) (fig. 3).

Measuring a power MOSFET’s input capacitance. Note that the capacitance of BT #3 shorts out CDS if the capacitance of BT #3 is significantly greater than CDS.

Measuring CISS with multi-mode bias tees means using a bias tee on each terminal of the device and an SMU instrument at each terminal. This permits applying a dc bias at each terminal.

When measuring CISS, the biggest challenge is that the capacitance between the drain and source terminals affects the accuracy of your measurement. Fig. 4 shows how the capacitance of the bias tee at the source terminal (BT #3) helps reduce this issue. The capacitance of the power MOSFET is represented in fig. 4 in a simple 3-terminal model.

A 3-terminal model of the capacitance of a power MOSFET. Since CBT3 is significantly greater than CDS, the ac drain and source voltages are approximately the same and the measured capacitance is equal to CISS.

Whatever ac current is generated by the C-V meter flows through all three terminal-level capacitances. A capacitor is needed to “short out” CDS so that the same ac voltage that appears at the drain also appears at the source terminal of the FET. This shorting capacitor must be much larger than CDS, so that it is a much lower impedance. It must also be rated for high voltage, because high voltage is present at the drain terminal during a C-V measurement of a power MOSFET.

With this shorting capacitor in place, no ac current flows through CDS, so the ac current measured by the C-V meter is just that due to CGD and CGS, the components of CISS. The capacitance of the bias tee at the FET’s source terminal is an effective solution for this shorting capacitor. It can be connected using cables at the low voltage input side of the bias tee. These multi-mode bias tees also greatly simplify measurements of the remaining circuit level (COSS, CRSS) and terminal-level (CGS, CGD, CDS) capacitances. Too, by allowing a bias at every terminal of the device, it becomes easy to measure capacitances of depletion mode devices, such as GaN transistors, without additional hardware. These triaxial multi-mode bias tees can allow making high voltage C-V measurements on commercially available 3,000-V power devices.

Conclusion
Validating power semiconductor devices demands careful attention to selecting the right instrumentation, connectors, and cabling. For more information on the selection process and the options available, I’d encourage you to watch my online webcast, Learn How to Validate Power Semiconductor Device Designs Simply and Accurately, Searching authentic huge vape atomizer?Look at here 6.0ml super large capacity+two dual coils+adjustable air valve,satisfy your requirement and bring you more than your imagine.Kangertech Aero Tank Turbo From Bullecig. available at http://www.bullecig.com/kangertech-aero-tank-turbo-atomizer.html .

Biographical Note
Jennifer Cheney is a Staff Applications Engineer at Keithley Instruments, Inc., headquartered in Cleveland, Ohio, which is part of the Tektronix test and measurement portfolio. She earned a Bachelor of Science degree in electrical engineering from Case Western Reserve University in Cleveland. She has been assisting Keithley customers with instrument applications since 2001.

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