12v to 6v voltage regulator at about 15 amps
I have found an article that recommends building a cheap voltage regulator using a 7806, ( 6 volt, 1 amp regulator) and 2 1uF 35v tantalum capacitors, then a NPN transistor which the original poster says is a 2N5881 npn transistor. here is the scematic.
the pdf article is attached and the link to the original article is here http://www.studebaker-info.org/tech/6-12V/6-12-6.html
The questions i have
1. what is a 2n5881 been replaced as? i cannot find it at jameco and the original posted doesn't give any specs for it.
2. how would i "pump up" the amps available from 10 to anything else (looking for about 15 amps) thinking that the npn transistor is the key but i am new to this and wouldn't even begin to know where to look.
3. what happens if any item fails? can i put some sort of safety into this so it quits rather than passing any addition voltage through
the heater runs at about 85 watts so 85 watts / 6volts = 14.616 amps
the wipers run at much less than that so building 2 of this would work great.
Thanks in advance for any insight to this