G
geronimo
- Jan 1, 1970
- 0
I want to use a 12volt soldering iron on aircraft repairs. The
aircraft voltage is 24 VDC. There is a cigarette-lighter type
receptacle in cockpit, but of course it is 24 VDC. This is what I need
to plug the soldering iron into. A typical one is 30 watts, so that
is about 2.5 amps it will draw. So I need a very small 12V regulator
in plastic box. I think a 7812 regulator would work, with one series
pass transistor. Should I rate the transistor for 2x expected current
? Are there schematics on-line somewhere...or maybe a ready built
regulator box available already?
aircraft voltage is 24 VDC. There is a cigarette-lighter type
receptacle in cockpit, but of course it is 24 VDC. This is what I need
to plug the soldering iron into. A typical one is 30 watts, so that
is about 2.5 amps it will draw. So I need a very small 12V regulator
in plastic box. I think a 7812 regulator would work, with one series
pass transistor. Should I rate the transistor for 2x expected current
? Are there schematics on-line somewhere...or maybe a ready built
regulator box available already?