My circuit eats all the current!?!

[DongBeetle]

Hi all
I'm new to electronics, so I hope there is a simple solution to this..
I've designed and build this circuit for driving a solenoid.


A few things are different from the image, the 1K resistors are 2K2 insted, and I'd like to run it on a 12V 800mA adaptor (gives about 15.25V, and about 5.25 at the 3K3's voltage split)

The solenoid gives a good kick when connected directly to the adaptor, but thru the circuit it seems that all the current is gone!
Is it because of the low gate voltage or!?!

Regards.

 

[4pyros]

What is the gate voltage?

 

[DongBeetle]

it's about 5.2-5.25V between the 3K3 resistors using the 12V adaptor, wich is also kinda wierd I think since the adaptor reads about 15.25V (open circuit I guess) shouldn't it be at least 6V or 7.625V acording to what it reads?

Should I just be using the 12V directly on the gate, perhaps thru a resistor?

 

[Nigel Goodwin]

Your circuit seems to show a 60 ohm resistor in series with the solenoid?, surely that will stop it working?.

 

[DongBeetle]

Oh yeah I forgot to say, I'm not using any resistor there.

 

[audioguru]

Please correct all the mistakes on your schematic. Show the Mosfet as a Mosfet symbol, not as a box.

 

[carmusic]

and yes mosfet gate can be driven at 10-20V

 

[Otaku]

How much current does the solenoid coil draw? I've used 12VDC pull solenoids that draw up to 800mA. I thought I had a problem with my circuit, but it was just an underpowered wall wart.