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  1. (*steve*)

    Sciaky model C.R.O.I. what is it?

    Oh, I'm almost 100% sure that there are banana plugs snapped off in those sockets, and the red one is clearly not original. Should I try to fix them? Replace them with normal banana sockets? Replace them with "safety" banana sockets? Install a BNC socket? What do you think?
  2. (*steve*)

    Sciaky model C.R.O.I. what is it?

    No smoke! The filaments glow... And after some adjustments to the brightness and position... Woo Hoo! (Actually, it's a little disappointing that it works ;-) ) The trace appears shifted to the right, and the vertical position seems to move the trace diagonally. The voltages inside are...
  3. (*steve*)

    Sciaky model C.R.O.I. what is it?

    Well, I'm feeling good enough to take a look at this unit. I've managed to source replacement capacitors. Here's what it looks like inside: Looking in the right side, there's quite a few paper capacitors and a 6AM6 tube (it's a "British made" Mullard tube). Behind that tube is the crt in a...
  4. (*steve*)

    COVID-19

    I was especially interested in what was happening on the Diamond Princess because I have traveled in this ship. Being stuck in a suite wouldn't be so bad, but in a 4 berth cabin, or heaven forbid, an inside cabin would have been a nightmare. I can't imagine what it was like for the crew.
  5. (*steve*)

    COVID-19

    Hi everyone. I am now entering my third day of self-isolation following becoming unwell with flu-like symptoms. Whilst I thought it would be a great opportunity to do some stuff I had lined up, I'm simply lacking the desire to do much at all. Neither my wife nor myself qualify for COVID-19...
  6. (*steve*)

    Capacitor Help

    Neither 35V or 10V is greater than or equal to 63V. The critical thing is to measure the voltage across where the capacitor is.
  7. (*steve*)

    Coronavirus transmission prevention device.

    Well, it hasn't got 100k yet, but...
  8. (*steve*)

    Capacitor Help

    Get a 100uF 63V cap, install it, and measure the voltage across it.
  9. (*steve*)

    Coronavirus transmission prevention device.

    My prediction may not be realised, but the shape of the curve is telling... And for those of you interested in the log graph. For those of you in the US, it may be worth looking at what is happening in Italy if it hasn't been widely reported on your news. My gut feeling is that there are...
  10. (*steve*)

    checking Chinese capacitors

    The front panel is white acrylic painted black. The lettering is an engraved on the laser to remove the paint (and some of the acrylic). I originally made a version of this to mark the holes, and I was going to use another MDF layer as a quick and nasty front panel. However, once I made one...
  11. (*steve*)

    checking Chinese capacitors

    I have done similar things when using a multimeter, however, if you're using a power supply with any significant output capacitance and the device under test suddenly fails, you can expose your meter to a high current/voltage. Whilst your meter may survive this, is prefer not to risk the input...
  12. (*steve*)

    Coronavirus transmission prevention device.

    Here's some things about the use of single use face masks. If you have unrestricted breathing, you're not wearing it right If it doesn't leave lines on your face when you take it off, you're not wearing it right If it's comfortable, you're not wearing it right If you don't change it after...
  13. (*steve*)

    checking Chinese capacitors

    I bought some cheap Chinese 630V capacitors and I wondered... How good are they? So I built something to check leakage current. The simple idea is to place a current meter in series with the capacitor and connect it to a high voltage power supply. But as you can imagine, that's probably not a...
  14. (*steve*)

    Coronavirus transmission prevention device.

    Confirmed COVID-19 cases outside China from 20 Jan to 3 Mar Do we hit 100,000 outside China on 14 Mar? If it's good enough for the White House, it's... Well, it's good anyway. See HERE.
  15. (*steve*)

    I think I'm starting a collection

    Yes, I have a few boat anchors, and I don't plan on collecting more. They're just too hard to lift.
  16. (*steve*)

    Coronavirus transmission prevention device.

    I work for the organisation setting up our state for coronavirus. Even though we've only had 2 known cases (both from the Diamond Princess) our top health officials are preparing for it's "inevitable" spread through the population. Key information: Don't shake hands (figure something else to...
  17. (*steve*)

    My new multimeter

    And I've given it a bit of a clean. Mostly wiping of some dust and grime. It looks a bit better.
  18. (*steve*)

    My new multimeter

    Hi everyone, I just got myself a new multimeter! Isn't it a beauty! When I got it, the needle was sticking a little, so I took the cover off and "adjusted" it. It appears the needle was actually bent, so a little, careful, tweak was all it needed to be as good as new. It's an Aussie made...
  19. (*steve*)

    Doubts battery operation and power of the Chinese plasma pen

    And I am laid back as I respond to this... I'm keeping an eye on it too. Last time I read this thread I was confused as to what the question was about. And I still am, because the only one who can explain is yet to post a second time. I understand the frustration, but it's probably best to...
  20. (*steve*)

    Instructables...now and then

    Yeah, when anyone quotes Instructables my first thought is "what did they do badly wrong?" Occasionally (very occasionally) they do things right. I'm always concerned that if I can spot so many problems for Instructables projects in my domain of knowledge, why would I trust stuff that's...
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