Thanks and thanks again for looking:
I have a circuit that when powered using a momentary switch, causes a couple of transistors, N-mosfet and 14m2 picaxe to stay on until a switch is pressed again to shut down the circuit. (If your interested here is the circuit hyperlinked to this text and found at the end of the thread) The N-mosfet is used to sink a larger load attached to the same supply.
The circuit works well and does the job, until I connect the load to the board which should only be live when grounded by the Mosfet. However, Once I connect the load to the circuit there is a leak through one of the loads pins, (which is connected to C.4 pin on the the 14M2 for later use) to ground and so the load turns on even though the mosfet has not sunk the load yet. I need the load to be connected to c.4 on the 14m2 pin for use later and so I cant disconnect it. However when I physically disconnect the pin to test, everything works perfectly and the load turns on as expected when the mosfet is activated.
So the problem is that the c.4 pin on the 14m2 seems to connect to ground by default even when the 14m2 is off. Should this be the case? If so is there a way I could set this pin to not connect to ground, but it would have to remain in this state even when the picaxe is off.
Thanks for looking and helping.
I have a circuit that when powered using a momentary switch, causes a couple of transistors, N-mosfet and 14m2 picaxe to stay on until a switch is pressed again to shut down the circuit. (If your interested here is the circuit hyperlinked to this text and found at the end of the thread) The N-mosfet is used to sink a larger load attached to the same supply.
The circuit works well and does the job, until I connect the load to the board which should only be live when grounded by the Mosfet. However, Once I connect the load to the circuit there is a leak through one of the loads pins, (which is connected to C.4 pin on the the 14M2 for later use) to ground and so the load turns on even though the mosfet has not sunk the load yet. I need the load to be connected to c.4 on the 14m2 pin for use later and so I cant disconnect it. However when I physically disconnect the pin to test, everything works perfectly and the load turns on as expected when the mosfet is activated.
So the problem is that the c.4 pin on the 14m2 seems to connect to ground by default even when the 14m2 is off. Should this be the case? If so is there a way I could set this pin to not connect to ground, but it would have to remain in this state even when the picaxe is off.
Thanks for looking and helping.