King Craft MD10759

[meeder]

While I was looking to see if I could find my old "830" that the ALDI discounter sold years ago (don't even remember if it was Germany or the Netherlands) I did find another DMM that I bought at ALDI and I thought that it might be nice to take the thing apart. This one was sold by ALDI in Germany.

It is the King Craft MD10759. No autoranging or any of that fancy stuff to be seen but ofcourse a transistor tester, where would one be without that...
The front shows CAT II 1000 VDC/750 VAC MAX and 500 V MAX. There is no mention on the front that the fuses that are inside are only rated at 250V (and they are glass at that).



The backside does reveal that the fuses are 250V. And the date is was sold is mentioned as well, 27th week of 2006.


The inside reveals this. You can see the three fuses that are in the device, all three are 0,2A fast blow glass fuses rated at 250V.


the front of the PCB. I did some tracing on the voltage input and the input goes directly to the selector tracks, so even if you are poking the probes at a 1000V it is happily transfered directly to the selector tracks.


This thing is going directly to the wheely bin.

[SeanB]

They even went to the trouble to make the 4070 quad Xor gate a COB unit as well, probably cut 2c off the cost of the unit not having to solder that little DIP package in.

Why the 3 fuses though, did they think a fuse for the voltage and resistance ranges was going to be effective protection? Or is one of them on the battery connection.