Electronics Forum | Sun Dec 28 21:18:43 EST 2014 | slouis2014
Can you give any idea on how can I check if the MOSFET in the circuit is defective or not. do i need to remove it from the circuit to test it.thanks alot
Electronics Forum | Wed Dec 31 02:50:41 EST 2014 | slouis2014
I have 4 boards already burn, that's why I want to check it prior power input. Is their a way I can check if it is in good working condition. I suspected it to have source to drain short but not sure on how to check it.need help thanks.
Electronics Forum | Tue Dec 30 09:33:29 EST 2014 | rgduval
Power up the circuit, and see how it performs. Check voltages at the input and the output, and compare to a known good board. Otherwise, you can check resistance in an un-powered circuit. Compare the readings to a known good board. cheers, ..rob
Electronics Forum | Wed Dec 31 09:10:48 EST 2014 | rgduval
If you suspect a short, check the resistance on a new board that hasn't been powered up. The data sheet should give you the junction resistances that you're looking for. Double check against a component not assembled on the board. If you measure a
Electronics Forum | Wed Mar 24 11:09:44 EDT 2010 | rajeshwara
Hello Sir I faced the same problem for QFP in DTH product in India. IPC stated that void should not be more than 25% of solder joint. But this type of void definatly create problem during functional test. Please check the folloeing point... 1.Check t
Electronics Forum | Sun Jun 25 02:22:03 EDT 2000 | Arturo
You can use a Power Mosfet to drive the light (I am taking for granted it is a DC Voltage the one that turns the light on), the only current a Mosfet demand is only to charge its input capacitance this way you will not damage your board. Configuratio
Electronics Forum | Wed Feb 16 23:20:40 EST 2022 | sarason
UAAA1280T is a Supervisory Circuit AIRBAG from Phillips/NXP ie voltage checking/current checking easily found in datasheet archive. TLC2274 is a Quad Low-Noise Rail-To-Rail Operational Amplifier CMD9936 could be a Dual MOSFET? What are you trying to
Electronics Forum | Tue Jan 20 04:43:33 EST 2015 | gragal
I need to replace a device which is in a 6-pin package which looks like SOT 23-6 / SC-74 style. The markings are D102/ 214B (D102 above 214B). I have checked numerous references to no avail. I think that the device is a comparator or op-amp with V
Electronics Forum | Wed Sep 05 06:34:08 EDT 2018 | oriolsancheza
Hi Rob, Thanks for your fast response. In fact, after a better look to driver boards, it has leaking SMD Electrolityc caps. Unfortunately after replacing them in 3 units, one of them gives 90% of times, ALARM4 led ON. Looks like a comunication pro
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