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Reviews (5)
19 Jul, 2017
Check before use
Useful and good value perf board nice selection of sizes. One tip/warning after building a project I discovered several shorts. This was due to some residue from the etching being left on the pcb. I then checked the others which looked ok. I recommend checking before using,
19 Jul, 2017
Not 1% tolerance
Although I have only tested a few random samples it seems some are closer to 2% & 3 % and not 1% as advertised. The colour banding is poor and difficult to see, some vales are missing but have substituted. I suspect these are actually rejects. if your looking for 1% resistors I cannot recommend
19 Jul, 2017
Good but some reservations
This DDS works pretty well and for the price is good value. It is let down by the internal switching power supply which has a rather large voltage present between the 'ground' and the mains earth (I measured 90V, at a few hundred uA). Although I wouldn't consider it a hazard (on mine at least) It does have the potential to damage delicate electronic components. I solved this by replacing the two pin power input and properly grounded the REF to mains earth (loosing the isolation on ground). Also note there are no CE markings so I am not so sure about the legality of importing into the EU.
A decent product if you're willing to accept its shortfalls, and would recommend checking the voltage/current between mains earth and the ground pin.