http://tech.groups.yahoo.com/group/wireless_energy_transmission/ Wireless Energy Transmission Tue, 23 Jun 2009 14:14:01 GMT Bert Hickman http://tech.groups.yahoo.com/group/wireless_energy_transmission/message/1404 http://tech.groups.yahoo.com/group/wireless_energy_transmission/message/1404 ... Hello Bo, You can sometimes find neon sign transformers (NST's) at your local neon sign shops - they often tear down older signs and scrap the Tue, 23 Jun 2009 13:19:11 GMT Charles Van Neste http://tech.groups.yahoo.com/group/wireless_energy_transmission/message/1403 http://tech.groups.yahoo.com/group/wireless_energy_transmission/message/1403 You can get neon sign transformers like a 12kV 60mA kind: Tue, 23 Jun 2009 04:03:45 GMT boxa588 http://tech.groups.yahoo.com/group/wireless_energy_transmission/message/1402 http://tech.groups.yahoo.com/group/wireless_energy_transmission/message/1402 Since I started these wireless energy experiments I noticed that my supply transformer really isn't designed to give as much voltage as its suppose to. I was Fri, 19 Jun 2009 23:12:55 GMT meintesla http://tech.groups.yahoo.com/group/wireless_energy_transmission/message/1401 http://tech.groups.yahoo.com/group/wireless_energy_transmission/message/1401 Dear Lloyd: Right on, thank you! Gerhard Thu, 18 Jun 2009 05:34:50 GMT Lloyd Ritchey http://tech.groups.yahoo.com/group/wireless_energy_transmission/message/1400 http://tech.groups.yahoo.com/group/wireless_energy_transmission/message/1400 Gerhard: In my experience, such arc overs occur when the tuning is off or the coupling between primary and secondary is too tight. Lloyd Ritchey Read about my Thu, 18 Jun 2009 03:11:00 GMT meintesla http://tech.groups.yahoo.com/group/wireless_energy_transmission/message/1399 http://tech.groups.yahoo.com/group/wireless_energy_transmission/message/1399 I need some help from experienced coilers. I have witnessed a dim glow from a compact fluorescent bulb inductively coupled to a "receiver" coil when that coil Wed, 10 Jun 2009 02:43:28 GMT Ed Phillips http://tech.groups.yahoo.com/group/wireless_energy_transmission/message/1398 http://tech.groups.yahoo.com/group/wireless_energy_transmission/message/1398 I've just had a chance to really study the videos you referred us to and end up with the conclusion that your coil setup is far from optimum and probably way Wed, 10 Jun 2009 02:31:18 GMT Gary Peterson http://tech.groups.yahoo.com/group/wireless_energy_transmission/message/1397 http://tech.groups.yahoo.com/group/wireless_energy_transmission/message/1397 ... What do you do to tune it? Tesla had two transmitter-receiver tuning methods corresponding to Bert's #s 1 and 5, and illustrated in the following drawing. Tue, 09 Jun 2009 15:34:08 GMT Greg Leyh http://tech.groups.yahoo.com/group/wireless_energy_transmission/message/1395 http://tech.groups.yahoo.com/group/wireless_energy_transmission/message/1395 Hi Bert, Fred, There's one useful difference between a radio receiver and a wireless power rig. While a radio receiver must maintain a high Q for narrow Tue, 09 Jun 2009 14:18:33 GMT Fredric Lozo http://tech.groups.yahoo.com/group/wireless_energy_transmission/message/1394 http://tech.groups.yahoo.com/group/wireless_energy_transmission/message/1394 Hi Bert,   Thanks for the excellant explanation on antenna tuning methods.   I'm in the habit of retuning my radio antenna everytime I change frequencies and Tue, 09 Jun 2009 13:38:42 GMT Bert Hickman http://tech.groups.yahoo.com/group/wireless_energy_transmission/message/1393 http://tech.groups.yahoo.com/group/wireless_energy_transmission/message/1393 Hi Fred, There are many ways to change the resonant frequency of a Tesla resonator. Anything that changes the resonator's inductance, distributed capacitance, Tue, 09 Jun 2009 12:47:30 GMT Fredric Lozo http://tech.groups.yahoo.com/group/wireless_energy_transmission/message/1392 http://tech.groups.yahoo.com/group/wireless_energy_transmission/message/1392 Hello all,   You are quite right about the reception going asymtotic as  antennas are tuned to resonance.   As a ham radio guy I would like to know the Tue, 09 Jun 2009 03:19:32 GMT boxa http://tech.groups.yahoo.com/group/wireless_energy_transmission/message/1391 http://tech.groups.yahoo.com/group/wireless_energy_transmission/message/1391 bert you are right about the resonance! one coil does have just alittle more wire than the other and the terminals are slightly different, if there was an even Tue, 09 Jun 2009 01:29:36 GMT Bert Hickman http://tech.groups.yahoo.com/group/wireless_energy_transmission/message/1390 http://tech.groups.yahoo.com/group/wireless_energy_transmission/message/1390 Hello, You have been doing some interesting experiments - please keep us informed of future ones as well. BTW, if you want to have a more professional dialog, Mon, 08 Jun 2009 15:33:48 GMT Gary Peterson http://tech.groups.yahoo.com/group/wireless_energy_transmission/message/1388 http://tech.groups.yahoo.com/group/wireless_energy_transmission/message/1388 ... OET Experimental Licensing System IMPORTANT NOTICE 01/21/2009: The location of the Experimental Licensing System has changed. The new location is