Claimed OU circuit of Rosemary Ainslie

[WilbyInebriated]

At this point I am tired and don't care right now.  Uncle!

Back to Aaron:

Yikes, Aaron.  You are saying that you are running your 555 timer at 6 volts instead of 12 volts?

You have to double-check the datasheet for your MOSFET to make sure you are still running it in saturation mode with only a 6-volt pusle arriving at the gate.  Even if the MOSFET does not seem to be heating up, you should check that.  You may be just at the transition point between the linear region and the saturation region with only a 6-volt input.

Who cares if the 110-ohm resistor runs warm?  Do you think that you are exceding its wattage rating?  If yes use two 220-ohm resistors in parallel and go back to a 12-volt source for your 555.

MileHigh

no, no uncle. if you were not aware of tk's lie before (which is highly improbable) there is no escaping that you are aware of it now. you are quite quick to call out the 'other' side but want to ignore it when tk does what he accuses the 'others' of doing? so, i ask you again, WHERE IS YOUR INTEGRITY?

[Harvey]

At this point I am tired and don't care right now.  Uncle!

Back to Aaron:

Yikes, Aaron.  You are saying that you are running your 555 timer at 6 volts instead of 12 volts?

You have to double-check the datasheet for your MOSFET to make sure you are still running it in saturation mode with only a 6-volt pusle arriving at the gate.  Even if the MOSFET does not seem to be heating up, you should check that.  You may be just at the transition point between the linear region and the saturation region with only a 6-volt input.

Who cares if the 110-ohm resistor runs warm?  Do you think that you are exceding its wattage rating?  If yes use two 220-ohm resistors in parallel and go back to a 12-volt source for your 555.

MileHigh

Just move the discharge wire as I have said and you can get rid of that resistor altogether.

p.s.
The gate should see 8V to work properly - but its probably moot if the FET is self-oscillating, because then you are only using the timer for the off FLOP's

[Harvey]

TK, I notice a big difference between your ugly waveform and Aaron's clean spikes. Aaron's wave form shows a very clear defined off period. An earlier post here by...brain fart...can't recall, anyhew - by someone with the math skills to calculate the duty cycle from the scope readouts shows very nicely that the FET would not be getting hot.

Yours on the other hand is very clearly operating in a linear region with heavy on times. Fix it. Until then your credibility regarding the heat goes right out the window. My guess is your 555 has a floating ground ref. or is damaged in some way. Also, did you use 5K pots instead of 50K? My setup shows good adjustment range, waaaay different from your first posts regarding a mostly on circuit requiring an inverter. Puzzling.

[forest]

MOSFET should work as a one way valve with extremely short time of close and left LC circuit unconnected to the power source.It should crack like a glass, do not allowing slowly dissipating energy stored in inductor.
In other words is like pumping the balloon which is easy if there is a correct valve
I don't see how it could be done efficiently with electronic parts and with closed circuit. For me MOSFET internal diode has been added to GROUND something which is OU and which manifest itself as a damaging heat if not directed properly.
In perfect world we would not have unstable 555 operation, heat, oscillations,some kind of resonance etc. I think they are results of non-linearity caused by interaction with ambient energy, but we are learned not to struggle with that topic...

[WilbyInebriated]

Well, I see that Err-on has posted a bunch of more non-interpretable scope shots from his borrowed DSO, along with more blatant distortions of what I and others here have said and found. Most of it is just trolling and lies but one thing in particular is really funny. He's complaining about my 500-600 mV drop across my current viewing shunt. Idiot.

I remind him that I am using AS AINSLIE SPECIFIES a 0.25 ohm shunt made of 4  ea. 1 ohm resistors in parallel. While he is not.

And 600 Mv drop across this resistor at full on with an 8.5 ohm load is perfectly normal and expected, as it gives 2.4 amps for the current value.

Aaron on the other hand is using some tiny value shunt that is different from Ainslie's value and so will be seeing a much smaller--and harder to measure accurately--voltage drop. His objection to my 600 mV figure is idiotic to the max.

Also I will point out that he is claiming a dozen different oscillatory modes, none of which have been reproduced by anybody else. And it appears that he is claiming to be able to produce the oscillatory mode with a FG instead of a 555. That I would like to see.

I say again, Aaron is not working with Ainslie's circuit. His circuit produces TOO MUCH HEAT. Which means that it is either MUCH MORE OU than even Ainslie's, or...the whole thing is a big mistake.

It will be interesting to see if that expensive DSO survives the week.

the hypocrisy never ends...
i remind you that it took you 42 pages ( and you later referred to that as "early on" ) before you got around to showing any data re: the irfpg50 AS SPECIFIED. hypocrite.

you have spent so long talking through your hat and out both sides of your mouth that you can't even remember what you have said. every time you open your mouth, you run into your own contradictions.