COP 17 Heater | Rosemary Ainslie | Part 2

[b4FreeEnergy]

Zoomed in



@sucahyo: Zoomed in at the requested area.
I have the feeling the frequency range of the 555 as it is set up now is too small to get to the desired area of oscillation?

@Rosemary: Any 'tips' here?

Cheers,
B

[b4FreeEnergy]

The link works in Windows media player

I think Ash has given the 'tuning' link but the problem here is that I can't open it.

If you open media player and you insert the link Ash posted (open it with the URL) it works, you can see the video but there is no audio? Is that intentional? No audio?

Regards,
B

[witsend]

@sucahyo: Zoomed in at the requested area.
I have the feeling the frequency range of the 555 as it is set up now is too small to get to the desired area of oscillation?

@Rosemary: Any 'tips' here?

Cheers,
B

Hi Bart. You need to set the timer pot at smallest 'on' and then play with the frequency. But I think you first need to adjust the gate pot to about 10 Ohms or thereby. Then play with the frequency - the faster the switching speed the better. Eventually, as you adjust the frequency you'll see the waveform default to plus/minus 50% on. That's the moment! That's when it goes into 'self oscillation' - regardless of the predetermined setting on the switch. You'll see this happen when the waveform just 'flops into' as we termed it - or defaults into - a 50% on - or thereby. Just look at the waveforms on the scope and keep tuning. Major aperiodic oscillation.

You'll not miss that 'moment'. Each circuit has it's own preferred resonating frequency. You need to 'find' it by this fine tuning. When you get there you then need to do some more minor adjustments of the gate pot to find that 'shadow cycle' or, as Glen refers to it 'the picket fence' harmonic. You'll see a lot about 'tuning' in the paper I sent you. Hope that helps.

Let me know if this makes sense.

By the way, I'm sorry I took so long to get back to you. A whole 12 hours. I'll be more alert next time. I see now that you work at light speed. LOL.

[witsend]

By the way. Is channel 1 across the shunt? If so it's looking very promising. You just need to get that 'self oscillation' number. When you get it you'll see it immediately. The waveform just starts 'pumping'. Check out Glen's live broadcast numbers. They're what you're after.

[b4FreeEnergy]

By the way. Is channel 1 across the shunt? If so it's looking very promising.

[witsend]

I've just found both posts. LOL. And thanks for the info on the channels. Check your pm. I'm gone until later this afternoon. WAY BEHIND in some much needed 'meetings'.

I think your proposed adjustments could be good. I'll get back asap.

Speak soon.
R

[witsend]

Bart? Nothing new here. I've been checking all afternoon. Hope all's OK. Just post here if there's still some problems.

Still holding my breath. LOL

BTW - I simply can't open Ash's link. Entirely defeated. But I'm happy to acknowledge the fault is probably mine. Just check out Glen's video broadcasts as a guide to the waveform. It may help.
added

[b4FreeEnergy]

[witsend]

Mazzeltov indeed Bart. Glad to hear of progress - but not sure what it is you're doing. Sounds good though. I'll wait patiently. LOL.

[b4FreeEnergy]

[witsend]

No. Nothing seems to help. Not even my boffin friends can manage this on Teamviewer. But Ash will no doubt lend assitance eventually, when and if he gets here. But all's good Bart. I'm so intrigued with that microcontroller number. Dying to see how it works. But I don't want to interrupt you. I'll wait. Gladly.

[b4FreeEnergy]

[ashtweth]

Hi guys we used the mpeg2 codex, K-lite codec pack is the best (it runs all codecs free to down load )

Free-Codecs.com : Download K-Lite Codec Pack 5.8.3 FULL, K-Lite Codec Pack 5.8.3 STANDARD, K-Lite Codec Pack 5.8.3 BASIC : K-Lite Codec Pack is a collection of codecs and related tools
if any body cannot play with please let me know.

Ash

[Groundloop]

@All,

Download the KM Player found here:
KMPlayer - Download

It is free and plays ALL video formats.

Regards,
Groundloop.

[witsend]

B. I am so, so sorry I'm not up on skype. Hopefully my computer will be up and running soon. I dare not use skype on my apple. Right now it's the only one of 3 computers that's working.

As you know - you're trying to find a 'self-oscillation' frequency in the circuit. If you 'fix' the duty cycle at 50% then - in point of fact you're also imposing a switching cycle which may well be incompatible with that required 'self resonance'.

What I used to do to find that required frequency was to turn my 'on' switch to about 3% on. Then I'd reduce the 'off' time through graduated steps until that magical moment when the waveform sort of 'tumbles' into that distinctive resonating frequency. If you don't find it the chances are you need to vary the frequency. As a guide here - just start at the 5 kHz range. That 'default' moment, when you find it, it will override that 'preset' setting. It simply ignores it. And it then also 'tumbles' into a much higher frequency. The phenomenon is NOT dependant on the preset fequency. It is dependant on the system finding it's own self-oscillation fequency.

What is proposed here is that this is the 'moment' when the energy from the load is either equal to or greater than the energy from the battery. The battery never quite discharges and the load never quite dissipates. While the temperature remains fairly constant so does the battery voltage.

I'm now just a little concerned that your microcontroller may be able to 'force' a duty cycle onto the circuit. Just don't know. I can see it's value when you can 'set' the microcontroller to hold that frequency. But it may be that you first need to find the required. I'll chat to Donny during the day and will report back here.



The only details regarding the gate pot is that the resistance should be set LOW. We used 10 Ohm - I think. Or thereby. Then you only need to come back here when you've got it into that 'chaotic aperiodic resonating frequency' which comes from adjustments at the switch.