/diy/ - Do It Yourself

Is it acceptable to use a single (schottky?) diode to make a higher voltage rail than your silicon rectifier bridge such that I can drive an N-channel MOSFET on the high-side? Rectified mains btw.

>>1507355
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>>1507286
It's possible, but it will require a few hundred dollars of RF equipment, if not a few thousand. You'll have to send them RF at an audio frequency (10kHz would work) and have it get picked up by the amplifier, meaning you'd need to induce at least a few hundred mV across a tiny wire. The electric field strength needed to pull that off would require a large amount of transmitting power even 5m away, so trying to do so at 200m would require a directional antenna and even more power. Not to mention you couldn't use a self resonant antenna at such a low frequency. Other options are frying their electronics with an EMP (not an option) or somehow trying to match their class-D amp's PWM frequency, which might not do anything at all. But as far as FCC regulations, I don't think you'd be in trouble at all, since I don't believe bands below 100kHz or so are regulated.