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 […]
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 […]
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 […]
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.
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 […]
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. It was salvaged from another project. Because of this, I had to modify the transformer […]