by hwmakers.eu:
This is an example of a simple and cheap milliohmmeter that can be made by every maker. The core of the circuit are a current source (LT3092) and a current sense (INA225): a costant current flows through the milliohm resistor under test and the voltage at the current sense output gives the value of the resistor (V=R*I).
The milliohmmeter can be used as a stand alone instrument by adding a MCU with at least 10 bit ADC and a LCD display or it can be used togheter with a DMM.
DIY milliohmmeter – [Link]
RELATED POSTS
- 28 October, 2022 Renesas expands the RZ/V series of microprocessors for improved machine vision AI applications
- 4 March, 2019 uChip: Arduino Zero compatible in a narrow DIP-16 package!
- 21 April, 2017 StromPi, The Uninterruptible Power Supply for Raspberry Pi
- 7 February, 2023 High-performance, Inductor Built-in Step-up “micro DC/DC” Converter XCL104/XCL105 Series
- 4 September, 2018 RAK8213 – The New Mini-PCIe Card For NB-IoT and LTE Cat M1
- 18 April, 2016 PiDrive – 314GB hard disk for the Raspberry Pi
Mike is the founder and editor of Electronics-Lab.com, an electronics engineering community/news and project sharing platform. He studied Electronics and Physics and enjoys everything that has moving electrons and fun. His interests lying on solar cells, microcontrollers and switchmode power supplies. Feel free to reach him for feedback, random tips or just to say hello :-)
view all posts by admin- 3D Printing (4)
- AI (260)
- Arduino (851)
- Audio (82)
- Basic Electronics (91)
- Books (18)
- Control (81)
- DIY (62)
- Ebay (1)
- Electronics-Lab (16)
- FPGA (120)
- GPS (71)
- Hardware (60)
- High Voltage (33)
- IC (731)
- Interface (79)
- IoT (648)
- Laser (44)
- LCD/OLED/ePaper (219)
- Led (196)
- Light (20)
- Mcu (613)
- Miscellaneous (79)
- Motor (147)
- Parts (245)
- PCB (115)
- Photovoltaic (75)
- Power (168)
- Power supply (175)
- Products (410)
- Raspberry Pi (396)
- RF (125)
- Robots (63)
- SBC (1004)
- Science (132)
- Sensor (611)
- SoC-SiP (14)
- Software (177)
- Soldering (31)
- SoM-CoM (41)
- Technology (229)
- Test Equipment (205)
- Test/Measurements (236)
- Timer (42)
- Tools (84)
- Top Stories (536)
- Uncategorized (69)
- USB (162)
- Websites (67)
- Youtube (99)
- /r/askelectronics
- /r/electronics
- 1-click BOM
- 3D ContentCentral
- Adafruit
- Adafruit Eagle Library
- Aisler
- All About Circuits
- Altium Circuit Maker
- Altium Designer
- Autodesk EAGLE
- AutoDesk Library.io
- AVRDUDE
- AVRDUDESS – A GUI for AVRDUDE
- CADENCE ALLEGRO
- CADSTAR
- Caneda
- Circuit JS
- Circuit Sandbox
- CircuitLab
- CircuitMaker
- CircuitPeople
- CometCAD
- Contextual Electronics' Getting to Blinky Tutorial
- Contextual Electronics' Shine on You Crazy KiCad
- Crowd Supply
- Design Spark PCB
- DipTrace
- DIPTRACE
- Dirty PCBs
- Eagle
- Eagle – List of ULPs everyone should know
- EasyEDA
- EasyEDA Gerber Viewer
- EASYPC
- EEVblog
- EEVBlog forum
- Electrical Engineering – Khan Academy
- Electronic Circuits and Projects
- Electronics Stack Exchange
- Electronics-Talk.com
- ElectronicsTutorials
- ElektorLabs
- Elliott Sound Products
- Embedded Lab
- Every Circuit
- EXPRESSPCB
- Eyrie.io
- Findchips
- FreeVideoLectures/Electronics
- Fritzing
- GC-Prevue
- gEDA
- Gerblook
- Gerbv
- GrabCAD
- GreatScott!
- Hackaday.io
- Hackster
- iCircuit
- Indiegogo
- Instructables
- JLCPCB
- Kerry D. Wong
- KiCAD
- KiCad Cheatsheet
- KiCad Footprint Collection
- KiCAD Gerbview
- KiCad Third-Party Tools
- KiCAD.info Forums
- Kickstarter
- KiKit – Automation for KiCAD
- Kitspace.org
- LCSC
- LibrePCB
- LTSpice
- Maker.io
- Maker.pro
- Mayhew Labs 3dpcb
- MENTOR
- Multisim
- Ngspice
- Octopart
- OemSecrets
- OrCAD
- OSH Park
- Pad2Pad
- PADS
- Part-DB
- Partkeepr
- Parts.io
- Partsbox.io
- PartSim
- PCB Shopper
- PCB123
- PCBWeb
- Pentalogix ViewMate
- Perceptive Component
- Pololu
- PULSONIX
- PwnKitteh/InsanelyCheapElectronics
- Qucs
- SamacSys
- SnapEDA.com
- Sparkfun
- SparkFun Electronics Eagle Libraries
- Technoblogy
- The Signal Path
- Tindie
- traceParts
- Tracespace Viewer
- Ultra Librarian
- Upverter
- Viewplot
- Voltlog
- WIN SOURCE
- WinAVR
- Xesscorp's list of KiCAD 3rd party tools
- ZenitPCB
- ZofZPCB
Join 97,426 other subscribers