I have a 12v magnetic lock, which is just an electromagnet. here the link.http://www.ebay.com.au/itm/Electronic-Latch-Lock-Catch-Door-12V-Electro-magnet-Release-Solenoid-Slant-Slug-/151986271326?hash=item236316745e:g:wvEAAOSwAYtWKf0S
I want to turn it on with my Arduino Uno microcontroller. I need 12v. I need a 5v to 12v DC convertor. Is Pololu 12V Step-Up Voltage Regulator U3V12F12 a good solution? here the link of the product: https://www.pololu.com/product/2117/specs
Do I need a part of Pololu 12V Step-Up Voltage Regulator any additional transistor or diode or relay? Also, is the current from the Arduino enough to power a magnetic lock, or should I have an external power source?