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Reviewed in the United States on February 15, 2025
Since I can’t hear the frequency being emitted, i decided to try out an app that is a spectrum analyzer, and upon holding the coil up to my device, it read the frequency that I had dialed in. Different modes give different intensities of that signal (e.g: Sine, Sawtooth, etc.) The strongest reading was detected using Half-wave and Lorenz modes.
Martin Miller
Reviewed in the United States on November 10, 2024
Works great for bench or stand alone 4-20mA testing of valve positioners and other DCS inputs
The Electron Wizard
Reviewed in the United States on August 7, 2023
Pro: Waveforms look clean on a 'scope. Frequency and amplitude are correct within reasonable tolerance. Lots of options.Con: The power connections are on the rear of the unit, so you cannot stand it face up on the bench. Needs a cutout or a vertical/angled mount.Con: Amplitude falls off above 1.1 MHz. It will attempt 15 MHz but it is struggling. Should be fine for audio and AM broadcast.Untested: Sweep and input monitoring
Customer
Reviewed in the United States on June 26, 2023
I used this to send a 0-10v signal to some DC fans on our fan-assisted heating and cooling products in our design studio. This helps to simulate a BackNet or Building Management System which would utilize a 0-10v signal to control fan speed, as opposed to our other automated control options. We may need to get more of these so we can take them to job sites and demo / troubleshoot our fans. I hardly know anything about electrical, but I figured this out on the first go. Does exactly what we hoped it would.
Bogdan Baba
Reviewed in the United States on October 4, 2023
Super cool little device it does everything i need i designed and 3d printed a little case for it with a small drawer to hold all it's parts works great!
nathan
Reviewed in the United States on July 12, 2022
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John M. Hill
Reviewed in the United States on March 5, 2022
This is a very nice device with lots of easy to operate features. I particularly liked the ability to store and recall multiple configurations.
T. D. Reynolds
Reviewed in the United States on September 3, 2020
Our company has designed very unique high speed data acquisition systems for NASA in support of propulsion testing for the past 35 years. We have had numerous function generators in our labs, but none that have provided all the functions this Koolertron provides. This little box is amazing! Not only is it extremely accurate, it provides 17 different functions with ranges from 2mV to 20V pp (20V on Sine wave only) and for only 110 bucks. Just unbelievable.
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