Hi,
I'm trying to connect a power MOSFET (BS270) to one output pin on a PICAXE
controller chip. The device the MOSFET is to turn on is an LED array that is constructed to look like a beacon light. It uses 24vdc and the PICAXE uses 5vdc.
I've connected things as shown on my attached drawing. When I power on my
project, the LED array immediately operates for about 10-15 seconds and then goes off.
It should not come on at all. It must be running at about half the normal voltage during
this time since I see only about half the LEDs lighting.
What am I doing wrong here.... how can I get it to stay off even when just applying
power to the project via a wal-wart? I can tolerate this but I'm concerned maybe Ive
done something wrong that will cause a failure later. Since the light is a warning, I
don't want it to ever be on falsely.
Thanks!
I'm trying to connect a power MOSFET (BS270) to one output pin on a PICAXE
controller chip. The device the MOSFET is to turn on is an LED array that is constructed to look like a beacon light. It uses 24vdc and the PICAXE uses 5vdc.
I've connected things as shown on my attached drawing. When I power on my
project, the LED array immediately operates for about 10-15 seconds and then goes off.
It should not come on at all. It must be running at about half the normal voltage during
this time since I see only about half the LEDs lighting.
What am I doing wrong here.... how can I get it to stay off even when just applying
power to the project via a wal-wart? I can tolerate this but I'm concerned maybe Ive
done something wrong that will cause a failure later. Since the light is a warning, I
don't want it to ever be on falsely.
Thanks!
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