[youtube]http://www.youtube.com/watch?v=UUb4FTolxLs[/youtube]
Necessary setup configuration:
The avr code does not sync channel frequencies as one when turned on. This has to be done. Then one frequency controls both channels. Everything else is stored with enter. Or set both frequencies to the same value and store both. Then on power up with channel sync disabled by default this will not cause a problem.
TDA2005 minimus frequency is 15hz The waveform height difference shows up on pic 691 & 692.
The nonsinusoidal waveform is because the GK4 control coils of 30awg are ~2.4 ohms each.
The TDA2005 specifications say a 2 ohm speaker on each channel of two 4 ohms in parallel.
The circuit is a 12 volt RV battery to +- 5v supply(homebrew) to AVR128 micro-controller (JDO300 code) to DDS sine wave generator (JDO300 engineered) to +12 volt KIT143 dual channel audio amplifier (KITSRUS.com) to GK4 iron wire core TPU device. I had changed things around and lost the configuration due to my belief that the driving waveform had to be sinusoidal. This is not so. Crank the potentiometer full up but this effects the screen refresh sweep.
By adjusting the volume level differing field parameters are achieved.
But muy importante:
I have a potentiometer on my device like the SM17/LTPU!This schematic shows the cross coupling(Tesla swastika) to produce a bucking coil configuration. That is why the needle jerks into rotation.
pic 691 shows the waveform of the spinning compass. ~3.3vp2p @ 1hz.
pic 692 shows the waveform of the rotational field @ 16hz
pic 693 shows the field on the amber screen.
Attempt to achieve magnetic vortex by enabling the top layer to spin CCW and the bottom layer to spin CW.
TEST#1: by connecting the top control in a bucking fashion with the bottom coil of each pair.
TEST#2: by connecting another tda2005 on the coil to drive the top CCW and the bottom CW. True channel separation.
An important effect to notice is the swaying field across the center region of the ring. This is why SM put his clamp-on amp meter in the center. I read 200ma. The swaying would also cut across the two center toroids.
[youtube]http://www.youtube.com/watch?v=S5TCQjDfPwQ[/youtube]
With the spiked waveform now I try square pulse next.
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Topic: 2 phase rotorless motor (Read 4284 times)
