Lidmotor's Penny circuit help needed.

[TinselKoala]

Ran off of a battery?  The lower voltage tells me it is probably draining more current and giving, or trying to, more current to the LEDs.

Scope is in limbo land again as no new updates YET again.  I figure they drove this scope from NJ to CO and are driving it to here with no airplane usage at all.

Honestly I so hope it never arrives now so I can just get a refund but watch it arrive the last day.

Yes, this is the _same_ battery that I have been running on from the start. I've heated it up several times, it just keeps on keeping on. Right now it's sitting at 329 mV and oscillating at 692 kHz, with the MPSA18. I want to see how low it will go with that, then I'll put the BC337 in there and repeat the test.

I'm amazed at the problem with your delivery. But last year I had a nightmare myself, two boxes of a three box FedEx shipment of my test gear got "lost" and wound up in Salt Lake City with no labels on them. I was able to describe the boxes to the CS agent (the fourth one I talked to) and she was able to get the people in SLC to go and search for them. They found them! The boxes were damaged but the stuff was so well packed that nothing was lost or damaged.

[Legalizeshemp420]

Well, I am saving for a RIGOL 1102E anyway so if it doesn't get here I will simply demand a refund on my CC.  My issue is that PayPal sucks and sometimes will not send it over to the credit card and there is nothing you can do about it.  I called and called and had all sorts of people say it would get done and nothing ever did.  This has happened twice and the next time I will call my CC company and have it reversed off and PP hates it when you do that.  Tough noodles to them.

Anyway it has until Oct 9 so all I can do is watch and hope that if it does finally arrive everything is intact and not like the last package that had Kool-Aid all over the outside (I thought tranny fluid at first) then I opened it and all on the inside was liquid Kool-Aid.  Luckily they found my package and redirected it to me and the insides with my parts was completely sealed.

So, it will  be 3 days late and I will know what harm has come to it (hopefully) on Monday.  I was reading the 2120 manual on line so it tells me how to test it but this does tell me that this scope never entered a single plane to arrive here.  Consider about 3k miles of a journey all in the back of semi and tossed around between stations.  Just a little worried since this is a precision item AND it is not digital.  If it were all digital I wouldn't worry about it but with a CRT I do out of past experiences.

[TinselKoala]

It will probably survive.

The DALM thing is doing something very interesting now. I've just left it running, you know, using the same battery that has been drawn down and heated up several times already. Now it stops oscillating when the battery gets down to 300 mV or so, and when it stops the battery spontaneously slowly regenerates up to something over 350 mV and it starts oscillating again. I haven't been able to catch the exact voltage points where it does this but it has done it at least half a dozen times over the last few hours. It just turned off and the bat voltage is 374 mV and rising about 1 mv/sec.  So I'm watching....

Ah... caught it. At 481 mV it suddenly started oscillating again, at around 400 kHz and the voltage is dropping rapidly, already up to 606 kHz and 320 mV....

Weird, huh....  going through 666kHz at 328 mV.....

[Legalizeshemp420]

It will probably survive.

The DALM thing is doing something very interesting now. I've just left it running, you know, using the same battery that has been drawn down and heated up several times already. Now it stops oscillating when the battery gets down to 300 mV or so, and when it stops the battery spontaneously slowly regenerates up to something over 350 mV and it starts oscillating again. I haven't been able to catch the exact voltage points where it does this but it has done it at least half a dozen times over the last few hours. It just turned off and the bat voltage is 374 mV and rising about 1 mv/sec.  So I'm watching....

Ah... caught it. At 481 mV it suddenly started oscillating again, at around 400 kHz and the voltage is dropping rapidly, already up to 606 kHz and 320 mV....

Weird, huh....  going through 666kHz at 328 mV.....

666khz just shows this is one HELL of a circuit, lol.

[TinselKoala]

Just so you know: I have the thing sitting on the bench and it is hooked up to the Simpson DMM for the voltage reading and also to a HP5381A frequency counter. So I just have to glance over there to see how it's doing. Right now it is not oscillating and the battery voltage is climbing  thru 474 mV, still at about 1 mV per second or maybe a bit slower.
Bingo! at 491 mV it spontaneously started oscillating again, batt voltage dropped to 335 mV and is slowly dropping from there. The frequency rise is quicker now, 720 kHz at 330 mV.
This is with the MPSA18, btw. I don't know if it does this with the BC337 yet.