Electric OU: Wireless Power 1: Tapping the Wheelworks of Nature?
Here’s my build of a great little wireless power transmitter and receiver that was shown in a video by user MarkoBakula at www.youtube.com Please see his video and comments for the schematics and templates and lots of great advice. Thanks, Marko !! I used the circuit board templates that he posted to make the PC board “manually” : I simply covered the blank board with clear plastic tape, traced the template onto the board and cut the traces with an Xacto knife, then etched and proceeded as normal. It took a couple of hours but was well worth the trouble. I made a few substitutions; the chokes are only 60 uH instead of 100 uH but they were what I had so I decided to try them, and they seem to work fine. I have hundreds of 1n914 diodes, so I used 2 of them, they seem to work fine. Capacitors ditto, those poly roll capacitors total 60 nF and haven’t gotten warm yet. The bulb is a 12 volt 5 Watt automotive dome light bulb, the wire is 14 ga house wiring. I have a transmitting loop made of 1/2 inch copper pipe 45 degree elbows that I made for it but haven’t finished yet; I wanted to test the unit so I just twisted together some of the 14 ga into a thicker bundle… it seems to work fine. It does need to be “kicked” into oscillation: if I just run the power up slowly from a PS the current draw is high and the unit doesn’t oscillate. But if I just set the PS and then switch on, it oscillates and transmits fine, with low current draw. The input current depends on how close you …
