Category Archives: ti

High Voltage Measurement is Shockingly Safe

With the right equipment and training, it’s possible to safely work on energized power lines in the 500 kV range with bare hands. Most of us, though, don’t have the right equipment or training, and should take great care when working with any appreciable amount of voltage. If you want to safely measure even the voltages of the wiring in your house there’s still substantial danger, and you’ll want to take some precautions like using isolated amplifiers.

While there are other safe methods for measuring line voltage or protecting your oscilloscope, [Jason]’s isolated amplifier method uses high voltage capacitors to …read more

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Posted in high voltage, Isolation, mains power, oscilloscope, perfboard, ti, tool hacks | Leave a comment

Shmoocon: Advanced Low Power Techniques And A Watch

Real quick question: how do you increase productivity at work? The greatest (highest paid) minds would just say: do agile or scrum or something. What’s scrum? That’s where you gather ’round every morning for a waste of time meeting that kills your every desire to be productive. A while back, [Travis Goodspeed] was stuck in some lesser circle of hell like this and in an effort to be polite by not looking at his phone too much, looked at his watch too much. This led to the creation of the Goodwatch, a new bit of hardware that replaces the guts …read more

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Posted in msp430, reverse polish notation, RPN, ti, watch | Leave a comment

The Flight That Made The Calculator And Changed The World

It was the fall of 1965 and Jack Kilby and Patrick Haggerty of Texas Instruments sat on a flight as Haggerty explained his idea for a calculator that could fit in the palm of a hand. This was a huge challenge since at that time calculators were the size of typewriters and plugged into wall sockets for their power. Kilby, who’d co-invented the integrated circuit just seven years earlier while at TI, lived to solve problems.

By the time they landed, Kilby had decided they should come up with a calculator that could fit in your pocket, cost less than …read more

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Posted in history, Interest, Pocketronic, solid state, ti | Leave a comment