This frequency meter project squeezes a lot of performance out of the ATtiny2313 microcontroller. That chip does all of the work, measuring the frequency on the input pin as well as multiplexing the ...

This sound frequency meter circuit is simple to build and can be constructed in a portable format. In can measure frequencies with a minimum level of 10 mVrms and a maximum frequency of up to 100kHz.

Although it dates back to the early days of the Marconi Company in the 1920s, the Franklin oscillator has remained a ...

The device is a simple, small, and cheap frequency meter with out any hard to find components to be able to measure frequencies up to 40 MHz while having below 1% errors. Most of the analog and ...

The Wood Dale City Council has agreed to buy 344 radio frequency water meters at a cost of $50,000 for a pilot program aimed at collecting data to determine whether the technology increases the ...

Keysight Technologies today introduced three low-frequency options for its E4982A LCR meter. With these new options, the E4982A is suited for RF inductor, coil, and EMI filter manufacturers that are ...

Yozo Shimada and Kazuhiro Shimaoka, Electromagnetic Waves Division, the Metrology Institute of Japan of the National Institute of Advanced Industrial Science and Technology (AIST; President: Ryoji ...