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I think the tester can be powered from a USB port instead of, or in addition to, the 9V battery with very little modification. Maybe just a reverse blocking diode if choice of battery or USB power is desired.
But why on earth would you want to make it USB powered? - it draws little current anyway.
Those numbers might be familiar to Nigel. Germanium transistors. I did have plastic housing red dot versions as well, but no sign of those.
Actually I saw it offered with the kit! Then searched for it by itself and found it.
www.BangGood said:
- By:thomas reiner 2014-12-18 19:59:01
- The tester works very well, i am very impressed by the Performance, but the case does not fit at al and is so pretty useless...
Banggood Reply:
Dear customer,
Sorry for the problem. Because the case is not original for the tester, so you need to refit it, just make some holes to make it fit. Sorry for the inconvenience.
Best regards
I put the tester in the case today.
The case may have been built for a different product but it can be altered to work with this tester.
Had to cut away the two protruding things in the box so the pcb could reach the 'bottom'.
Had to cut a hole for the momentary switch. Glued the red extension to the end of the switch rather than let it seat properly. This was necessary because the extra height was necessary. If you can solder the switch a little higher off the board that would be better. Might want to turn the 3 terminal block 180 degrees but in my case was not necessary.
Some peeps may want to cut another hole for the external adapter.