This tester can be used to check the polarity of any power source, and is therefore very useful when installing automotive equipment, alarm systems or anything else you can think of. Because this circuit is so simple and cheap, even frying one with an over voltage is not a big deal. There are m...By: yhdesai
Continue Reading »
from Instructables: exploring - technology - robots http://ift.tt/1xZgGpO
0 comments:
Post a Comment