continuity testing
continuity testing
(OP)
Hello everyone,
I'm trying to measure the circuit protection diode of a certain pin, the problem is I have a bypass capacitor connected. Unfortunately, there is no way to disconnect that cap. I can measure ~0.5V, but I need a high settling time prior measurement. Is there a way to speed up my testing? Thanks in advance.
I'm trying to measure the circuit protection diode of a certain pin, the problem is I have a bypass capacitor connected. Unfortunately, there is no way to disconnect that cap. I can measure ~0.5V, but I need a high settling time prior measurement. Is there a way to speed up my testing? Thanks in advance.





RE: continuity testing
RE: continuity testing
Glenn
RE: continuity testing
htt
Glenn
RE: continuity testing
TTFN
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RE: continuity testing
@IRstuff - this is an input pin. Maybe the one who designed the DIB did not foresee this would happen. He could have put a relay to connect/disconnect the cap, depending on the tests. By the way, this cap is recommended by the device datasheet.
RE: continuity testing
Reverse may, or may not, be OK. Typical reverse breakdown is around 30V, so there's be about 30 mW of power, which is not a big deal. However, avalanche breakdown can induce hot electron effects that tend to trap electrons in the field oxide, thereby reducing the breakdown voltage in the region.
TTFN
FAQ731-376: Eng-Tips.com Forum Policies
RE: continuity testing