Timeline for How to test bipolar linear integrated circuit (voltage detector) using a DMM
Current License: CC BY-SA 4.0
11 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| May 6, 2020 at 14:12 | vote | accept | Ashraf Alshahawy | ||
| May 6, 2020 at 13:24 | comment | added | Ashraf Alshahawy | Thank you so much for your help, really appreciated :) | |
| May 6, 2020 at 13:18 | comment | added | Reroute | This tells us that that device is not holding your machine in reset, so should not be what is causing your issue. | |
| May 6, 2020 at 13:15 | comment | added | Ashraf Alshahawy | 3.30v between GND & OUT and between GND and VCC. What do this tell us? | |
| May 6, 2020 at 13:05 | comment | added | Reroute | DC voltage measurement, | |
| May 6, 2020 at 13:04 | comment | added | Ashraf Alshahawy | So in this step I'm using the DC voltage measurement or the Diode measurement? P.S: I'm pretty new to the world of electronics. | |
| May 6, 2020 at 12:59 | comment | added | Reroute | that could be a sign of a problem, so next measure the voltage between out and gnd when it is powered, the voltage should be very close to Vcc to ground if the chip is not pulling it down. | |
| May 6, 2020 at 12:56 | comment | added | Ashraf Alshahawy | I just ran the 1st test and it showed me 5.5KOhms resistance between the GND & OUT in both directions / swapping the DMM terminals. And 0.8KOhms between GND & VCC in both directions. And 4.7KOhms between VCC & OUT in both directions. | |
| May 6, 2020 at 12:46 | comment | added | Reroute | The device is made to pull the reset signal of the device to ground if the power rail is too low, so you would measure the output pin, and if it is 0V or close to it, the device is actively pulling to to ground, | |
| May 6, 2020 at 12:44 | comment | added | Ashraf Alshahawy | Thank you. Could you please explain this more "it should not be pulled to ground if it thinks the devices power rail is good." And do I also use the resistance test in this step? | |
| May 6, 2020 at 12:27 | history | answered | Reroute | CC BY-SA 4.0 |