user TURBO?s replication of Steven Mark?s TPU ?

[MeggerMan]

Hi Alex,
You have been busy with various projects!

I think I have looked at your website before, sorry for not spotting that.

Regarding the MEG circuit on your site.  Small comment, the pulse applied to the coils need to be in one polarity only, the reversal of the field polarity is achieved by the other of the 2 input coils, so its a simple push-pull arrangement for the 2 coils - no need for a complex H bridge.

Here are a few ideas I have had for the TPU:
Using the XR2206 (4 off), 3 for the 3 frequencies and one for 7.83Hz sine wave feed into:
1. Pulse width, to vary between 1% and 50%, giving a sort of amplitude to the pulse.
or
2. VCO input to alter the frequency up and down by say 5% at 7.83 times a second. (FM signal of 7.83Hz)
I think with this arrangement the sound from the whole setup will be very weird.

Regards

Rob

[Groundloop]

[EDIT] Deleted.

[hartiberlin]

Allright,

   I have ringing in the coils I can clearly see the signals adding to a bigger one but when I add a load it all diminishes.

I have found the 3 phase drive to put out more power but still no OU?

Best yet half bright 60w 

later
Mike

Hi Mike,
so about 30 Watts out ?
How much power do you feed about into the control coils ?


Can you test with a capacitor parallel at the collector output coil ?

How big is the amplitude at the ringing resonance point ?


What does your scope shot exactly show ?

Many thanks.

Regards, Stefan.

[CTG Labs]

Dear all,

I now have 3 proper signal generators and working on some mosfet and tube drivers to run the TPU. Tests to come soon...


D.

[Grumpy]

What?

No frequency counter to go with them?

Hey, is that calibration sticker expired?

Just razzing you, Dave.