Giantkiller moves forward into Full Heterodyning.

giantkiller · October 04, 2007, 10:58:41 PM

Rats! Three inch fires and smokin' wires!
@Bolt,
It was something way too silly. I am embarrased. I didn't have the +12 rail hooked to the tops of the fet totem poles.

@all,
But to stay true to my Danger Guy image, when I turned it on again I had a mini-911 with 3 inch flames.
Hey, I blow stuff up. I can't help it.
So now I do post disaster triage and see what I can recover. Things were so close...
And remember: 'Only you can prevent Fet fires'.

--gaintkiller. Backdraft...

hansvonlieven · October 05, 2007, 04:07:25 AM

Hey GK,

Blowing up stuff is good, at least it shows there is ENERGY in the system :-)

Hans

innovation_station · October 05, 2007, 08:01:37 AM

i have been giveing the 3 freqs much thought in the last week

so far this is what i have come up with sm says 3 freqs start them 1 at a time 1st freq = fundmental freq of collector or a harmonic of it 2nd freq = Second harmonic COMPONMENT so what does that mean? i dont think it means the second harmonic!!!! it means the second componments resonant freq ie. the control coils or a harmonic of that then the 3rd hummm would it be the harmonic of the first 2 freqs?

ist

giantkiller · October 05, 2007, 11:17:24 AM

Quote from: innovation_station on October 05, 2007, 08:01:37 AM
i have been giveing the 3 freqs much thought in the last week

so far this is what i have come up with sm says 3 freqs start them 1 at a time 1st freq = fundmental freq of collector or a harmonic of it 2nd freq = Second harmonic COMPONMENT so what does that mean? i dont think it means the second harmonic!!!! it means the second componments resonant freq ie. the control coils or a harmonic of that then the 3rd hummm would it be the harmonic of the first 2 freqs?

ist

Oh yeah... The humm that brings down the house.

A friend of mine wants to experience this audio wave test live. Whoohahaha! I told her is was part of a new weight loss program. It'll shake the stuffin's out of anythong.

--giantkiller.

giantkiller · October 05, 2007, 11:27:27 AM

Quote from: hansvonlieven on October 05, 2007, 04:07:25 AM
Hey GK,

Blowing up stuff is good, at least it shows there is ENERGY in the system :-)

Hans

Yes. So now I have the 1.) The input, 2.) the amplifier, 3.) the output. I have to interface the amp to the output better. Then I can get to the next step smoothing the total operation. I will have a self contained triple Class A setup. Sweet!

Importante:
I put a 1k resistor at the postive input of the opamp. Now no infinite gain. Right in line.This is the second change to the ad826 schematic
http://www.geocities.com/leobodnar/audio_amplifiers.html.
The first change was IRF840's.
Now I have to find the imbalance of operation to squelch the hi current draw. Most likely in a number of places. It's all good.

Put on speakers and experiment with Keely's numbers. Put on coils and do Steven Mark tests. And mix the wave types and you have massive possibilities. Oh yeah. Last January I did cool things. This January is going to be a total blow out. Erh, blow up? I haven't decided yet. But I have a multiplicity of tests along the lines of Hutchison.

--giantkiller.