That is, if you only need 4 switches why you should use 5?
if you only need 4 switches why you should use 5?
I would go along with this with a caveat. READ THE DATA SHEETmany FET's are advertised as 50 amp, and then you find out that is good for pulsed operation with a 10% duty cycle. and the FET is rated for 8 amps at 100% duty cycle. Many are being advertised as the 100% duty cycle, but this only takes a few seconds to verify before purchase.
Best way to find something is to test it on your own
Btw I runned the Transistor with a power supply of 5A and 30V for 10min without stop
and the transistor was realy cold,
I done few experiments with the transistor and I find out that a PC_USB 5v_400mA (I think it is) it's the bestBase Voltage/Current from the transistor to release all the power supply voltage and current to pass thru thetransistor.
Which suggests that you had only an insignificant load and your test was a bit useless. If you did run it at 5A and it was cold then it was not actually working.
OK the real words for this are "to drive the transistor into saturation" and you did not do that with 400mA and a 5A load. You are going to have to drive that transistor with an arduino, you can only get 40mA out of an arduino so you need another transistor in front of this one to get the base current to what you want.No one suggested using a DPDT switch. It was a relay with DPDT contacts that was suggested so you could control the diesction with the arduino.
your test was a bit useless
the tongue of the motor
was about from 15 to 30 celcius and i don't think that was a fail test because Itested in diferent ways
About 2.3W with 2N3055 in saturation at 5A with 300mA base drive, Vsat = 0.4V, I make it...Given the large metal TO3 package that would take a little while to heat up.