ElectronicallyClueless
New Member
I have recently started to dabble in building my own circuits. Its been fun and frustrating at the same time.
My project is relatively simple in its current stage. All I would like to do is to take a 30v 1a power source, convert it down to a low voltage to power the MOSFET gate and then have the full 30v be controlled by the MOSFET. I have attached a schematic of how I have everything wired (forgive me if its not properly done)
**broken link removed**
So now my problem... When I apply the 3.3v from the regulator to the MOSFET gate the source voltage is only 0.8v. if I increase the output voltage from the regulator I can increase the source voltage. If I go up to
10v from the regulator I get around 8v from the MOSFET.
I'm not to sure what is happening. The MOSFET gate threshold is only 2 - 4v it seems like 3.3v would be enough to open the gate. Maybe I am missing something. Here is a link to the MOSFET data sheet:
http://www.datasheetcatalog.org/datasheet/irf/irf510.pdf
If anyone could please help me with this issue I would be very grateful. I've been at this for two days and I am out of ideas.
My project is relatively simple in its current stage. All I would like to do is to take a 30v 1a power source, convert it down to a low voltage to power the MOSFET gate and then have the full 30v be controlled by the MOSFET. I have attached a schematic of how I have everything wired (forgive me if its not properly done)
**broken link removed**
So now my problem... When I apply the 3.3v from the regulator to the MOSFET gate the source voltage is only 0.8v. if I increase the output voltage from the regulator I can increase the source voltage. If I go up to
10v from the regulator I get around 8v from the MOSFET.
I'm not to sure what is happening. The MOSFET gate threshold is only 2 - 4v it seems like 3.3v would be enough to open the gate. Maybe I am missing something. Here is a link to the MOSFET data sheet:
http://www.datasheetcatalog.org/datasheet/irf/irf510.pdf
If anyone could please help me with this issue I would be very grateful. I've been at this for two days and I am out of ideas.