I made a "power-gate" using a PNP and an NPN mosfet to cut power from a sesnor when I am not reading from it.
My problem is that the circuit seems very noise sensitive - if i touch (with finger) the wire (Pin2) from my uC to gate on the first mosfet (Q10) the circuits goes "on" and the sensor starts drawing current.
Right now it is built on breadboard, so that might be the cause?
I have attached a schematic of the small circuit, on this the sensor has been replaced with a diode (D1) and resistor (R2).
the sensor I intend to use is a VH400 from vegetronix.
How can I alleviate this problem?
My problem is that the circuit seems very noise sensitive - if i touch (with finger) the wire (Pin2) from my uC to gate on the first mosfet (Q10) the circuits goes "on" and the sensor starts drawing current.
Right now it is built on breadboard, so that might be the cause?
I have attached a schematic of the small circuit, on this the sensor has been replaced with a diode (D1) and resistor (R2).
the sensor I intend to use is a VH400 from vegetronix.
How can I alleviate this problem?
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