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  2. Tektronix analog oscilloscopes - Wikipedia

    en.wikipedia.org/wiki/Tektronix_Analog_Oscilloscopes

    By the 1997 catalog, there were no longer 2000-series listed. Indicating a long 14 year production run. The main differences between the non-storage, non-digital analog 2200 series are as follows: the 2200 series is mostly 2 channel, with 2245, 2246, 2247, and 2252 being the 4 channel exceptions (the two extra channels having only two vertical ...

  3. Heathkit - Wikipedia

    en.wikipedia.org/wiki/Heathkit

    Oscilloscope OL-1 from 1954, the company's first with a relatively small 3-inch CRT which allowed for a highly competitive price of US$ 29.50 (equivalent to $335 in 2023) for the DIY kit. [1] Heathkit is the brand name of kits and other electronic products produced and marketed by the Heath Company.

  4. CD V-700 - Wikipedia

    en.wikipedia.org/wiki/CD_V-700

    A drop-in replacement for the EON 6210 or the 6993 tube is the LND 720, manufactured by LND, Inc. of New York, USA. CD V-700M Geiger counter with alpha-sensitive end-window probe, also displaying protective red cap for the probe window and typical calibration decals. In this example, the meter face is altered to display Counts Per Minute only.

  5. Test probe - Wikipedia

    en.wikipedia.org/wiki/Test_probe

    Parasitic capacitance at the probe tip is very low so, for very high-frequency signals, the Z 0 probe can offer lower loading than any hi-Z probe and even many active probes. [ 13 ] In principle this type of probe can be used at any frequency, but at DC and lower frequencies circuits often have high impedances that would be unacceptably loaded ...

  6. Why was a major reservoir empty when L.A. fires broke out? - AOL

    www.aol.com/why-major-reservoir-empty-l...

    The Palisades Fire erupted on Tuesday, Jan. 7, and by 3 a.m., the three 1-million-gallon water tanks in Pacific Palisades ran dry due to "extreme demand," officials said.

  7. Eggs now qualify as ‘healthy’ food, FDA says: Here’s why

    www.aol.com/eggs-now-qualify-healthy-food...

    The U.S. Food and Drug Administration (FDA) now classifies eggs as a “healthy, nutrient-dense" food, according to a new proposed rule. Registered dietitians react to the change.

  8. ‘This Is Not A Love Story’ by Huffington Post

    testkitchen.huffingtonpost.com/this-is-not-a...

    A scary, sobering look at fatal domestic violence in the United States

  9. Tektronix - Wikipedia

    en.wikipedia.org/wiki/Tektronix

    In 1956, a large property in Beaverton became available, and the company's employee retirement trust purchased the land and leased it back to the company. [10] Construction began in 1957 and on May 1, 1959, Tektronix moved into its new Beaverton headquarters campus, [10] on a 313-acre (1.27 km 2) site which came to be called the Tektronix Industrial Park.