sorry, 74HC595 Am Mittwoch, 27. September 2017 22:21:24 UTC+2 schrieb newxito: > > There are no IC’s on the board with the 2n7000, just some resistors, leds, > nixies and the connectors to driver, controller (led pwm) and psu. I > replaced the 2n7000 with BC548 and 4.7K resistor (patch picture). One of > the driver boards on the picture has two HV5622 and the other one 8 x > 75HC595 and 64 x MPSA42 transistors. > > > Am Mittwoch, 27. September 2017 21:51:31 UTC+2 schrieb Dekatron42: >> >> What are those IC's on the board with the 2N7000? >> >> /Martin >> >> On Tuesday, 26 September 2017 20:48:08 UTC+2, newxito wrote: >>> >>> I agree 100%, it must be an ESD problem, these things are really >>> fragile, even on a breadboard circuit just touching 2 or 3 times the gate >>> kills the 2n7000. I think I will not be able to solve the problem in a >>> reasonable amount of time, so for now, I will patch the boards with >>> transistors and continue with the tests. Just finished to solder one of >>> each type of driver boards… >>> >>>>
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