Impedance matching procedure with radiant output current matching

[sucahyo]

If anyone already post this, please let me know.

It has been mentioned often that the coil must have the same impedance as the battery. Matching imedance improve circuit efficiency. But some of us can't think of a way to measure battery impedance, atleast I do.

Here is my idea for impedance matching procedure. We know that with high impedance load, the output current will be lower, with low impedance load, the output current will be higher. We can use this to match our coil impedance with our battery impedance.

Since using multimeter to measure impedance may give conversion error, the best way is to use the coil directly as load and measure the current output. It would be better if the multi meter show more precise current value, but I think any meter will do since radiant circuit is sensitive to load.

We do the comparative test by replacing the charged battery with our radiant coil candidate. The output current has to stay the same if both has the same impedance. reduce the wire length if output current is higher, increase if lower.

For the best result I think the circuit has to has stable radiant output. This means mechanical radiant oscillator may not be good for this kind of test. Solid state is the viable option. But since this field is new, any other type may be tried.

The test circuit frequency or duty cycle or input current should be the same with the candidate circuit, maybe anything else too. Same circuit would be best. We use another coil for test coil.

[Inquorate]

Sounds great to me

I was wondering how I was going to do the Impedence matching for future experiments..

Small note; test coil Impedence when battery low, and when battery fully charged. For best results, the coil's inductance will have to be variable over this range to suit changing Impedence of charging battery / cap.

Thanks for sharing this idea Sucahyo

Love and light

[Ted Ewert]

Nice idea Sucahyo. You could also put a resistor in there to get a set value as a baseline.

Ted

[sucahyo]

Small note; test coil Impedence when battery low, and when battery fully charged. For best results, the coil's inductance will have to be variable over this range to suit changing Impedence of charging battery / cap.

Ok . I guess the inductance controller is the next step, although this can be some relay connecting to different soldering point.

Nice idea Sucahyo. You could also put a resistor in there to get a set value as a baseline.

I think of that too but I have no knowledge about how the coil core, frequency and the way it wound would change the impedance. I figure it would be more faster too if we just use the coil along with it's core.