Supercap2F
- Mar 22, 2014
- 550
- Joined
- Mar 22, 2014
- Messages
- 550
Hello Everyone!
So recently I was trouble shooting one of my projects. And the LM2901Ns that I bought off of ebay, where triggering at really odd voltages. So I decided to do some testing. Here's what I found:
[TR1][TD]5.02V[/TD][TD1]Less then 3.95V[/TD1][TD]Off[/TD][/TR1][TR2][TD2]5.02V[/TD2][TD]More then 3.95V[/TD][TD]0V[/TD][/TR2][TR1][TD1]0V[/TD1][TD2]3.81V[/TD2][TD]0V[/TD][/TR1]
From my understanding the chart should look more like this:
[TR1][TD]4V[/TD][TD1]Less then 4V[/TD1][TD]0V[/TD][/TR1][TR2][TD2]4V[/TD2][TD]More then 4V[/TD][TD]Off[/TD][/TR2]
NOTE: The Off state on the output is the same as the + supply. But the LM2901N is a open-collector component (regards to Harald Kapp
).
Now is it safe to assume that I was slipped some mickeys? Or am I just looking at it wrong, again.
A photo of my testing circuit is attached.
Thanks for your time!!
Dan
So recently I was trouble shooting one of my projects. And the LM2901Ns that I bought off of ebay, where triggering at really odd voltages. So I decided to do some testing. Here's what I found:
- Input | + Input | Out |
---|
From my understanding the chart should look more like this:
- Input | + Input | Out |
---|
NOTE: The Off state on the output is the same as the + supply. But the LM2901N is a open-collector component (regards to Harald Kapp
Now is it safe to assume that I was slipped some mickeys? Or am I just looking at it wrong, again.
Thanks for your time!!
Dan