Basic Tesla’s Experiments (Part 1) – 100W Wireless Transmission without Ground Connection

Wireless and Single-wire Power Transmission

This configuration is also very effective and enables 100W single-wire and wireless power transmission. Along with the coils L1 and L2, another coil L3 was added.

3CT (Three-Coil Power Transfer) - wireless power transfer - wireless electricity
wireless power transmission – wireless electricity – 3CT (Three-Coil Power Transfer)

All three coils, L1, L2 and L3, are in the resonance. Double Slayer exciter, together with the secondary coil L1, is the transmitter. The coils L2 and L3 are used as the receiver. In this case it is not necessary to ground the receiving device.

wireless power transfer - wireless electricity - 3CT (Three-Coil Power Transfer) - basic principle and ideas
wireless power transfer – wireless electricity – 3CT (Three-Coil Power Transfer) – basic principle and ideas

It is interesting, that this configuration is somewhat similar to Tesla’s version of wireless energy transmission:

Tesla Wireless

When grounding the coils L2 and L3 is replaced with wire, it’s easy to see the similarities. Obviously, Tesla used the earth as a single-wire transmission of energy.

 

Tesla Wireless transmission

4 comments on “Basic Tesla’s Experiments (Part 1) – 100W Wireless Transmission without Ground Connection

  1. rahul ranjan choubey

    19th July 2016 at 11:32 am Reply

    did you measure the distance between the coils??
    what i can see is its a huge distance…
    any way i am a student working on wireless charging of electric vehicles for my masters…
    is there any way i can ask my doubts and discuss something regarding wireless transmission..

    thank you…

  2. Hello Spigel,

    How far can you transmit power between L2 and L3. Can I place L1 and L2 near each other, and then ground L2, then go 100 yards and use my grounded L3 and have it light? Do you have any feeling of the losses over distance for one wire(ground) transmission?

    Great Work BTW!

    • Sorry for the Late Reply. That's what I tried. Unfortunately, it does not work because it's a big loss. L2 and L3 must be connected by a thin wire. If L3 additionally connects to the ground, a better result is obtained. I tried it with a 0.08 mm wire and a length of 30m. With this wire, 50W-75W power is transferred without any problems. The wire is completely cold. The wire can be touched during power transfer.

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