I bought the Australian designed kit for the "Dick Smith ESR meter" locally from a distributer close to me for $80 Canadian. The meter measures low ohms from .01 to 99 on a two digit display using AC (actually it's pulses) instead of DC. It will measure capacitors in circuit or out but they must be discharged first. I've found that my standard (used) electrolytic caps are usually good but some of the (used) Tantalums were highly variable and in one small batch, three of them got thrown out. The meter measures caps from 1 uF up to 10,000 uF. It doesn't measure accurately below 1uF. Caps below 1uF aren't usually electrolytics in any case. The meter will also measure resistors from .01 to 99 ohms. My regular ohmmeter doesn't do well below an ohm. As for the power supply, they supply two battery holders for 6 triple A's. I went with a plug in AC brick that supplies the 9 VDC. It's a switcher type that I found in a thrift store for 25 cents. The kit has been well thought out and is easy to assemble but I had to measure the resistors first before installation because their color codes on a blue background are hard to read. After assembly, there was no need to calibrate as the readings were accurate as is. Terry M
Message
Re: [Homebrew_PCBs] ESR Measurement Kit
2005-03-03 by Terry Mickelson
Attachments
- No local attachments were found for this message.