Here’s a DIY in circuit capacitor ESR meter build by Lawrence: This project was conceived as a way to enhance the collection of test equipment on my test bench. I buy a lot of older HP test gear off ebay as well as older radios. Most of this gear is 25-60 years old and needless […]
Tag Archives: ESR meter
Tinkerer’s tricorder update
Nickjohnson posted an update to his network analyzer we covered previously: More tweaks and improvements! I’ve moved to a dedicated LED dimming controller for the backlight instead of resistors, and made a few other layout tweaks. It’s now out for fab. A friend put together some nice renders of the case for me Via the […]
Tinkerer’s tricorder
Nickjohnson wrote previously about his Loki PSoC based development board. Now he’s experimenting with the idea of building an ESR meter: I’ve been experimenting with different measurement options using the Loki as a test platform. I’m just about ready to start speccing out and designing a PCB soon, and I’ve got a nice case lined […]
ESR meter rebuilt
MickM shares how he rebuilt his ESR meter: I just rebuilt my ESR meter. I found the schematic on the web, see ORIGINAL-schematic.png for author. This works well and is easy and almost free to build. It is analog (which I prefer), and uses a 50uA meter. Via the forum.
ATMega88 based LCFesR meter
Ben Eishen sent in this link. He says, “I have been thinking about building an ESR meter, and this one looks like a winner.” The design is based on the ATMega88 and according to the designer, Dr. Le Hung, “The LCFesR 4.0 unit is a precise, wide range meter that can measure inductivity, capacity, frequency […]
ESR meter build and review
Wingnut built an Equivalent Series Resistance meter based on this design. He made a couple mods to the original design to get better performance: I used a LMH6619 opamp for the oscillator, this is rail-to-rail output/input and 35mA current sourcing. This allows for a wider voltage swing and better drive capability compared to standard opamps. […]