Leaderboard

So for ages I have been thinking about making some kind of universal test rig, but it was cutting out all the holes for the bulbs which put me off a bit, and of course the space that all takes up in a box! makes it quite big! Having the scorpion 4 rig and pressing it into use recently made me think, the LED arrays for the lamp test seem very good! no burning out of lamps etc, nice and compact! and the added advantage if one transistor on the board under test has gone short there is no difference in brightness on the led array where as with bulbs you very much risk the whole 33v or so across a 12v bulb and the blackening and blowing of the bulb! Not sure how long this is going to take, or if anyone is interested in this at all!, but here goes the start of the project... so the search started, I hit on these modules 8 x 8 64 leds in each! they arrived today! each are 60mm x 60mm so a good size! 4 of them makes the array I want to build so 120mm square and looks like this! 256 led's in a 16 x 16 matrix! perfect! (seems a good few boards are 16 x 16 lamp matrix) work started on the lamp load board, this will provide the lamp circuit on the board under test with a nice normal load so the sensing circuit on the board under test works as normal, and the drive for the led display, so far my circuit has bee traced out in diptrace with the hopes to make the pcb for this, it is still under heavy construction at the moment! more to come if anyone is interested!

Yes, it travels up the copper cores of a wire, destroying the core as it goes. It will then start on the board where the wires join to it. It does take a long while but it does happen.

hi tony your parts are on the way to you let us know if they work

Just follow Pauls info on his page There's answers to the 4 legged caps there too http://www.booze.net/page7