August 11, 2018, 8:24 am
I did a teardown a while ago on a cheap eBay electromagnetic radiation detector, and if you recall the performance of that meter was mediocre at the best. This time around though, I’ve got a MEDA PLM-100 AC magnetometer. Since MEDA (Macintyre Electronic Design Associates) specializes in fluxgate and search coil magnetometers, this PLM-100 magnetometer is a piece of professional test equipment. In this blog post, you will see some teardown pictures and for those who want to see some real world actions you can take a look at the video included towards the end. Continue reading ‘Teardown of an MEDA PLM-100 AC Magnetometer’ »
Tags:
AD636,
burden voltage,
Electromagnetic compatibility,
EMC,
fluxgate,
Macintyre Electronic Design Associates,
Magnetometer,
Meda,
Op Amp,
Search Coil,
TL032,
Transimpedance Amplifier,
True RMS Category:
Electronics,
Teardowns |
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August 6, 2017, 6:49 pm
I have an old Keithley 1301 temperature probe. This probe is an accessory to the Keithley 130A/131 multimeter and is capable of measuring temperatures between -55°C to 150 °C. Since it outputs an analog voltage linearly proportional to the temperature (1mV/°C), it can be used with any multimeter that has a mV range. Continue reading ‘Converting Celsius to Fahrenheit – The Analog Way’ »
October 29, 2016, 7:40 pm
I have always wondered how the clean/dirty indicator on my Hoover vacuum cleaner works. So when it was time to replace it with a new one, I opened up the old vacuum and took out the “dirt finder” circuit board. As you will see in the video below, it is actually quite clever! Continue reading ‘How does Vacuum Cleaner Clean/Dirty Indicator Work?’ »
November 25, 2014, 8:04 pm
Hysteresis can be added to a comparator circuit to improve its stability, especially when the input signal is noisy. In this post, we will examine the hysteresis characteristics of some common comparator and Op Amps using an oscilloscope. Continue reading ‘Visualizing Comparator and Op Amp Hysteresis’ »