Hi All
I spent a couple of hours last night reading the TINA manual regarding adding components,,,,,I am none the wiser!
I altered my circuit and used the second version of the 2n7000 and I now get the same results as you.
The components turned up this afternoon and I have built the first circuit using the 2n7000. It does the job perfectly and is very reliable. There is some slight flickering/dimming of the LED as expected but this is not a problem.
I had also ordered the MCP101-270hi/to. The component also works a treat and when connected to the 2n7000 it gives a distinct ON/OFF when the voltage passes 2.6V. (OFF when > 2.65V)
However when I introduced my voltage divider to try and get the component to work when the voltage drops below 3.5V it all goes wrong and hopefully you guys can help.
The voltage divider should have an output of <=2.6V when the battery is at <=3.5V. This should then cause the MCP101 to switch the reset to high >2V. However the voltage divider does not produce the voltage I expected when connected to the MCP101 as shown in the circuit schematic eg
voltage into divider (V) V out of divider (V)
3.0 2.0
3.6 1.76
4.0 1.7
5.0 1.6
8.3 2.7
I have to turn the input voltage upto 8.2V at which point my voltage divider then produces 2.65V and the circuit then switches reset to High.
I am sure this is all down to the load on the circuit altering the voltage divider but are you able to explain what I have to do to counter this problem. (if this is the problem,)
I am sorry if my question and explanation of the problem is not clear. (You know when your confused when asking the question is confusing you). I did think of a video to explain but then I thought you may know immediately where I am going wrong.
Justin
I spent a couple of hours last night reading the TINA manual regarding adding components,,,,,I am none the wiser!
I altered my circuit and used the second version of the 2n7000 and I now get the same results as you.
The components turned up this afternoon and I have built the first circuit using the 2n7000. It does the job perfectly and is very reliable. There is some slight flickering/dimming of the LED as expected but this is not a problem.
I had also ordered the MCP101-270hi/to. The component also works a treat and when connected to the 2n7000 it gives a distinct ON/OFF when the voltage passes 2.6V. (OFF when > 2.65V)
However when I introduced my voltage divider to try and get the component to work when the voltage drops below 3.5V it all goes wrong and hopefully you guys can help.
The voltage divider should have an output of <=2.6V when the battery is at <=3.5V. This should then cause the MCP101 to switch the reset to high >2V. However the voltage divider does not produce the voltage I expected when connected to the MCP101 as shown in the circuit schematic eg
voltage into divider (V) V out of divider (V)
3.0 2.0
3.6 1.76
4.0 1.7
5.0 1.6
8.3 2.7
I have to turn the input voltage upto 8.2V at which point my voltage divider then produces 2.65V and the circuit then switches reset to High.
I am sure this is all down to the load on the circuit altering the voltage divider but are you able to explain what I have to do to counter this problem. (if this is the problem,)
I am sorry if my question and explanation of the problem is not clear. (You know when your confused when asking the question is confusing you). I did think of a video to explain but then I thought you may know immediately where I am going wrong.
Justin