2017 May 05

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May 2017
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Questions? Need an updated map? Email me andy@andyarthur.org.

Monthly Job Creation, April 2012-2017

In April 2017, the economy created 211,000 new jobs. The previous month, March 2017's job creation numbers were revised down to 79,000 jobs created. While still in positive territory, the job creation numbers have slowed down as we've gotten closer to full employment.

Data Source: U.S. Bureau of Labor Statistics, All Employees: Total Nonfarm Payrolls [PAYEMS], retrieved from FRED, Federal Reserve Bank of St. Louis; https://fred.stlouisfed.org/series/PAYEMS, May 5, 2017. Change from Prior Month.

Basic overview of how a DC/AC Power Inverter works

For about 15 years now, I've had a inverter that takes high-amperage direct current supplied by a battery or alternator, steps it up and converts it into alternating current for use with typical household appliances, like lighting that I use at camp.

I had a vague idea of how inverters worked, but I never knew the exact electronic process. I thought all of the voltage change was done on the alternating current side of things -- once the modified sine wave is created. It turns out that it's actually the direct current that is stepped up using a Boost Converter (a device that uses an inductor coil to step up DC voltage), while the alternating current sine wave is created towards the end of the process.

A very interesting video. I also encourage you read up about direct-current Boost Converters and their step-down equivalent, the Buck Converter.