We all ways said are relay went out in the radio and you can make a relay vibrate and do the same thing.And if crap means it will not run any thing that needs more then a mA of power then your right it is crap. But it will put out higher volts then to put in any time you oscillate even dc threw a step up transformer you will get higher volts with less power out put. See some one seen that if you didn't turn a relay on till it latched it would vibrate then idea came I can use that to make a radio play in my old ford wouldn't need that 90volt battery I would just oscillate the 12volts and step it up .