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| EN-EL18 'c' in Pipeline - Page 3 | |
| Has been announced in Japan. | Rate Topic |
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| Posted: Mon Aug 6th, 2018 09:04 |
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21st Post |
GeoffR
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novicius wrote: Inverters are a different matter, the output from a cheap inverter, such as might be used in a car, isn't a very accurate sine wave and may be far from "clean". Such a "dirty" output will cause the charger to get hot and may result in internal damage.Norvicius, I am a qualified avionic engineer, I do know the difference between AC and DC as well as the means of converting one to the other. Converting DC to AC often starts with a square wave in low cost devices. The mains in most Western countries may not be very clean but it is markedly better than that from a cheap inverter. Now, if I were Nikon I would be advising against the use of converters and the like because I don't want to accept responsibility for fixing my expensive charger when it is used with one. Chargers do actually run hotter with a poor waveform, I have experienced it with a computer PSU run from an inverter. Run from a mains supply it was markedly cooler. DC into an AC device where the first component is a transformer will result in a current flow, depending on the DC voltage that may or may not result in the destruction of the primary winding. Actually delivering DC to an AC device takes some doing but a DC offset on an AC wave form isn't uncommon and may result in magnetic saturation of the core, with attendant problems. However, a Nikon MH22 or MH26 does not contain a transformer, I know I have opened one up to fix a damaged internal lug. A switched mode power supply can be designed to run on a DC input. Now DC offset is not an uncommon occurrence so most appliances can happily accommodate a degree of offset without problems but too much is damaging. What level of DC is acceptable from a cheap inverter? I have no idea but if it is above the level Nikon designed their chargers to accept, it will be a problem. So, both poor waveform and DC offset can damage chargers, given that cheap inverters are unregulated the extent of either, or both, could easily be outside the design parameters of a Nikon charger. If you were Nikon, would you risk it?
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| Posted: Mon Aug 6th, 2018 14:54 |
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22nd Post |
novicius
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GeoffR , I do realize that you know what you are talking about,and that was actually my point , see 1) , that I pondered on AC and DC was to recap so as to avoid confusion to those who are not versed in the matter. Tiny amounts of DC into AC and/or somewhat polluted Sine-wave can be Negligible , yet, as you Rightly pointed out , Too Much could end up in Disaster . My pointing out that a real good DC/AC converter is a costly affair was meant as a heads-up to Robert to re-consider the project of conneting that Converter to power-up his Cherished and Costly charger/batteries. My way of Not trying to be a " know it all " , just pointing out something.
____________________ Back in Danmark I do not use my equipment to make photo`s .. I take photo`s to use my equipment The better I become at photography,the better my camera gets. |
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| Posted: Mon Aug 6th, 2018 15:17 |
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23rd Post |
Robert
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Thank you novicius, it had actually been lost on me! I completely missed your point... I think I have yet another incredibly boring day ahead of me tomorrow, I am recuperating from an excessively active weekend... If I get the urge, I will fire up my DC-AC inverter and my Oscilloscope and have some fun looking at the wave output from the inverter under various loads. 
____________________ Robert. |
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| Posted: Mon Aug 6th, 2018 15:27 |
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24th Post |
jk
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Go to it Robert. Real evidence is better than theoretical banter!
____________________ Still learning after all these years! https://nikondslr.uk/gallery_view.php?user=2&folderid=none |
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| Posted: Mon Aug 6th, 2018 15:41 |
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25th Post |
Robert
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 I don't often wheel it out but I love using the 'scope.My old one had to be left behind when I moved out of my house into a tiny flat. I also had to abandon my sewing machine, a freshly serviced Singer.  I was very lucky to find another, also a Techtronic, but a tenth of the size of my original! I just wish it had four channels rather than two.
____________________ Robert. |
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| Posted: Tue Aug 7th, 2018 01:22 |
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26th Post |
GeoffR
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novicius wrote: GeoffR , I do realize that you know what you are talking about,and that was actually my point , see 1) , that I pondered on AC and DC was to recap so as to avoid confusion to those who are not versed in the matter.OK, that is fair enough. If Robert wants to run a charger from an inverter in his car he could do worse than buy a clone charger (MH21) as they are much cheaper than a genuine Nikon version, this one, costs £15. there is an obvious risk in that the charger may not be as well built as the original but charging an elderly EN-EL4 using a cheap clone with an inverter is a small financial risk, especially if he carries a wide mouth flask of cold water as a precaution against battery overheating. If it works he has a solution, if not he has lost an old battery and £15. Some time back I had a gentleman, on another site, trying to convince me that he knew, because he was a heating and ventilation engineer, that aircraft do not have recirculation fans. He went very quiet when I pointed out that I had type ratings on several aircraft and they most certainly do have recirculation fans. Sometimes it is necessary to explain the source of ones views.
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| Posted: Tue Aug 7th, 2018 07:41 |
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27th Post |
Robert
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GeoffR wrote:If Robert wants to run a charger from an inverter in his car he could do worse than buy a clone charger (MH21) as they are much cheaper than a genuine Nikon version, this one, costs £15. I have just such a charger! Zero cost/risk... Exciting things have cropped up this morning so I probably won't have time to wire in the inverter today. A small parcel from eBay with a little electric meter in it. I am trying to trace the hole in my electric consumption. About 55% of my entire home electric consumption is consumed by my main computer and it's ancillaries. I feel that is disproportionate and not really acceptable. I am on a quest to identify the culprit and reduce the consumption to more acceptable levels. As for online reputation, in my experience it comes with time. One reads posts and assesses the content, if it's well put together and backed up with conversation over time a good reputation can be built. I always start by giving someone I don't know the benefit of any doubt and go from there, some dig holes for themselves, others rise in my esteem to dizzy heights. I never make claims to be an 'expert' in any field' I spent 55 years in the construction trade, covering most disciplines from digger driving to site management. Along the way I have learnt many practical skills including electrics, engineering and welding, even a little flying!!! Every day I try to learn more and more about more and more, rather than my definition of an expert which is someone who learns more and more about less and less! LOL Many principles and techniques are transferrable between disciplines, once learnt they are invaluable.
____________________ Robert. |
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| Posted: Wed Aug 8th, 2018 05:42 |
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28th Post |
Eric
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I am on a quest to identify the culprit and reduce the consumption to more acceptable levels. Use the iPad.
____________________ Eric |
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| Posted: Wed Aug 8th, 2018 07:35 |
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29th Post |
Robert
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Way too tedious. I have tried, end up feeling like folding it over my knee... Entering URL's is a total pain, creating or editing posts on here is a right palaver, searching google is frustrating when the auto self correcting spellcheck/replacement *thinks* it knows better when I want to put a name in the search box. Then the stupidity of not allowing page swipe. The iPad, the home of swiping - doesn't allow my most used swipe, that of swiping from one page to another in the web browser, crazy. Apart from that I used to think it might have some benefits, I was wong.
____________________ Robert. |
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| Posted: Wed Aug 8th, 2018 07:57 |
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30th Post |
jk
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Robert wrote:
What is disproportionate? Computer or non-computer use? Hot water tank, cooker. Big consumption.
____________________ Still learning after all these years! https://nikondslr.uk/gallery_view.php?user=2&folderid=none |
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