Activity for H_H
| Type | On... | Excerpt | Status | Date |
|---|---|---|---|---|
| Comment | Post #290416 |
There maybe only 2 V between CAN-High and CAN-Low, in dominate bus state (0 V in passive state). 2 V and 1 kΩ will probably be too dim, especially when you consider that on average, only about halve of the time during a frame, the bus is in dominant state. Depending on the LED colour, the LED itself ... (more) |
— | 12 months ago |
| Comment | Post #290414 |
Do you have a µC or some other kind of system (like a Linux SBC) that communicates with CAN that you can program?
If not, do you have access to a already existing CAN-Transceiver?
(more) |
— | 12 months ago |
| Comment | Post #290423 |
Any reason you don't use a CAN transmitter [transceiver] to convert CANsignals to a 5V-Signal? It is probably easier. (more) |
— | 12 months ago |
| Edit | Post #290392 | Post undeleted | — | 12 months ago |
| Edit | Post #290392 |
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— | 12 months ago |
| Edit | Post #290392 | Post deleted | — | 12 months ago |
| Edit | Post #290392 |
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— | 12 months ago |
| Edit | Post #290392 |
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— | 12 months ago |
| Edit | Post #290392 | Initial revision | — | 12 months ago |
| Answer | — |
A: Converting 5V to ±12V I only address this point: > Are there some other way how to do this which I have not covered? Yes. Instead of using boost and buck converters, you can use integrated charge pumps. They don't use inductors but only capacitors. The only one i could find (in my very short search) that has 2 sy... (more) |
— | 12 months ago |
| Comment | Post #290354 |
You could use a RS232 driver IC. Set one TTL input to 0 the other to 5V. Then you may have +12V and -12V on the output pins. RS232 ICs often need to generate 12V from 5V or 3.3V for their output signals.
But not sure if that is enough and what advantage you have compared to a DC-DC IC. (more) |
— | 12 months ago |
| Comment | Post #290284 |
That assumes couplings is before the filter and there is no coupling after the filter.
This is very likely not the case, but just to show that this is theoretically possible that power noise affects settling time:
Lets assume there is a coupling of a 60 Hz signal, to make the Gedankenexperiment s... (more) |
— | 12 months ago |
| Comment | Post #290284 |
You said "roughly 60 Hz rate". How near is it at 60Hz and what is power line frequency in your country?
Is it possible that some couplings to the power line? I know you said you filter things about 30 Hz, but that filter is probably still leaking some amounts of higher frequencies signals through,... (more) |
— | 12 months ago |
| Comment | Post #290284 |
You only stated what the software should do. But is it really what the software does? Did you log every single value of a measurement and made sure the software behaves correctly?
Or is it possible that there are errors in the software causing this problem? (more) |
— | 12 months ago |
| Edit | Post #289868 |
Post edited: |
— | about 1 year ago |
| Edit | Post #289868 | Initial revision | — | about 1 year ago |
| Answer | — |
A: What are some best practices for library management? As the others said, there is no definite answer to this. But here is how we do it: There is a global schematic library and a global footprint library. They have the components we use and have the necessary details (like references to the ERP system). But there is still only one symbol for differen... (more) |
— | about 1 year ago |