可听电磁干扰探测器 - ET-1 型_Gnuplot_代码_下载

# The Ear Tool Model: ET-1 Get this kit at our store: http://bit.ly/2TQ3Cbr Or on eBay: https://ebay.to/38sRZv4   # License Harbin Repairs 2020 Creative Commons Attribution ShareAlike 4.0 https://creativecommons.org/licenses/by-sa/4.0/ # Documentation ## What is the Ear tool? The Ear tool can be used to detect almost any electromagnetic interference coming from your electronics such as a power supply, transformer, CPU, microcontroller, wireless transmitter, relays, switches, speakers, transducers, transistors and more. At Harbin Repairs we use the Ear Tool to diagnose problems with computer motherboards, cellphones, and televisions by pointing the tool at different parts of a circuit board and listening to the high frequency pulsing coming from different components. For example, this can help us determine if a CPU or microcontroller is doing any processing or if it’s just sitting there burning up because there’s a short somewhere. It can also let us know if a cellphone or other device is turning on even if there’s no sign of life on the screen or lights. The tool can also be used to discover the different noises your electronics make when they are doing different things (e.g. standby mode vs. fully powered on). For the controls, the gain switch adjusts between high and low sensor gain and the full scope switch switch is used to help clear up some of the background noise. More examples are in the assembly guide video below. ## Demonstration and kit assmebly guide Video https://youtu.be/0QIx8OhJN-o [](https://www.youtube.com/watch?v=0QIx8OhJN-o) ## Bill of Materials  | Description | Part # | Main Links (Affiliate) | eBay Links (Affiliate) | Amazon Links (Affiliate) | |-------------------------------|--------------------|-----------------------------|-------------------------|--------------------------| | PCB | N/A | PCB manufacturer of choice | N/A | N/A | | Enclosure | 1591BSBK | https://bit.ly/2sKEk3i | https://ebay.to/30SXp05 | https://amzn.to/2um65Qa | | Speaker | 1.5W8R 8R1.5W | https://bit.ly/2upP8nP | https://ebay.to/36eXlbX | N/A | | 100Ω Resistor 0805 | N/A | https://bit.ly/2TKRSqF | https://ebay.to/2ul6eDt | N/A | | 1kΩ Resistor 0805 | N/A | https://bit.ly/36lOaql | https://ebay.to/2TNRTtY | N/A | | 220uf Electrolytic Capacitor | N/A | https://bit.ly/2RxIeEY | https://ebay.to/2RHrTh0 | N/A | | 4.7uf Ceramic Capacitor 0805 | N/A | https://bit.ly/3awu9k3 | https://ebay.to/36lOJ3r | N/A | | Blue LED 5mm | N/A | https://bit.ly/2GgnU5K | https://ebay.to/37h1f5p | https://amzn.to/37sNP6c | | LM386 Audio Amp | LM386 | https://bit.ly/2tweNeR | https://ebay.to/2RHXmA1 | N/A | | SPST Slide Switch THT | SS12F17G4 | https://bit.ly/30IrAqm | https://ebay.to/30MXx14 | N/A | | 3.5mm Headphone Jack | 307 3F07 | https://bit.ly/36hQ5Mu | https://ebay.to/36eJQcm | https://amzn.to/36eYmRj | | 100mH Inductor | N/A | https://bit.ly/38xpU63 | https://ebay.to/36eJQJo | https://amzn.to/2TNTjoi | | Felt Tape | JVCC FELT-065 | https://ebay.to/2G9WzlS | https://ebay.to/2G9WzlS | https://amzn.to/30JB05h | | Battery Compartment Separator | Custom Laser Cut | https://www.delviesplastics.com/ | Drawings available on Github | N/A | | 9v Battery Clip | N/A | https://bit.ly/2RfzFjh | https://ebay.to/2uis6zx | https://amzn.to/2TKSEnB | | 10KΩ Potentiometer | B103 10K 0932 WH09 | https://bit.ly/2ul666X | https://ebay.to/2NRkgno | N/A | | Pot Knob 15mm x 17mm x 6mm | N/A | https://bit.ly/37f6bYo | https://ebay.to/37jvYim | https://amzn.to/2GawAur | | Terminal Block Connector | KF301-5.0-2P | https://bit.ly/38xsJnF | https://ebay.to/3avkOZG | https://amzn.to/369tQZ2 |