I have a Fluke 8050A DMM with the optional NiCd battery pack.
Does anyone know of a modification I can make to it which will allow it to operate (correctly and safely) with the batteries removed, so it runs from the mains power only?
TIA
Graeme
Copied this from n earlier post: Not exactly sure about the 8600A but many of this type are dependent on the batteries for filtering the line power. I have simply removed batteries and replaced them with electrolytic caps with success - though you probably would want to insert the apropriate current limiting resistor between the supply and the load as the charging current will no longer be loading down the supply.
As mentioned above- just replace them with electrolytics - make sure they are polarized in the same direction. Depending on the particular meter you may have a bipolar battery supply or simply a single polarity supply. ie: you will need either one or two caps. I would use something like 2200uF at
16V. But anything in that ballpark will do. The caps will take over the filtering of the supply but you will probably need to insert a resistor between this supply and the meter (load) to compensate for the fact that there is no longer a charging current being drawn from the nicads. Experiment with the value of R till you have the voltages looking right. It's pretty simple really.ElectronDepot website is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.