Then you can rig up an experiment and prove what you said.
Then you can rig up an experiment and prove what you said.I was a top notch electronics technician for 30 years.
I have intimated more than one engineer with solid troubleshooting/problem solving skills.
What is your experience?
I doubt my Kodak Model 1 or Durst 603 had any variance as the bulb/enlarger plugs directly into the 120V AC via a timer but enlargers that have a power supply separate from the lamp head most likely have some built into the power supply which is part of the enlarger.
My experience is that no sensible conversation is possible with someone who doesn't understand something and tries to engage in a pissing contest in order to try and prove their point.What is your experience?
I ran into many people in the electrical field from electrician to electrical engineer who think like ShutterFinger that if you reduce the voltage to something you increase the current. This I found came from the fact that many devices have settings for use with different voltages. If you set if for high voltage the current draw is less. If you set if for low voltage the current draw is more. But of course it's not like a light bulb. In these devices often the transformer taps are changed.My experience is that no sensible conversation is possible with someone who doesn't understand something and tries to engage in a pissing contest in order to try and prove their point.
Also, as a hobby I engineer and build electronics devices including enlarger light sources and their drive and control electronics + firmware, audio devices (solid state & vacuum), which comprises the entire design chain from requirements and conceptual design through circuit design and simulation up to PCB manufacturing assembly and of course the necessary firmware development. It's a lot of fun, I'd recommend it if you're into this kind of thing. In doing so you'll also learn why the things you've said before about power, voltage and current relationships in light bulbs as well as wire gauges and cutting strands of wire are plain wrong or dangerously oversimplified.
The textbook article you link to though has it about the current increase when increasing the voltage.https://www.allaboutcircuits.com/textbook/direct-current/chpt-2/calculating-electric-power/
the power source has to be capable of supplying the current to see the increase when lowering the voltage.
I think shutterfinger is a true electrician.The textbook article you link to though has it about the current increase when increasing the voltage.
And the load magically needs to drop its impedance...that's the part that keeps going over your head.the power source has to be capable of supplying the current to see the increase when lowering the voltage.
No it don't. Thanks for the bashing.And the load magically needs to drop its impedance...that's the part that keeps going over your head.
Please do explain how the output power of a system can exceed the input power. I'm all ears. I'm sure the people at CERN and ITER would be very interested as well. Free energy for the people![...] if power draw out exceeds power input something in the input or output burns out oft times quickly.
Excellent demonstration, thanks for going to the effort of setting that up to show us. Good to see Ohm's law is still working well after a couple of hundred years, well maybe not that long!*sigh*
Whatever mate. As long as you'll never do any electrical work a where near me it's all fine.
PS: couldn't resist. Evidence of the bleeding obvious...
View attachment 298053
12V rated bulb (5W nominal) at 11.75V & 360mA = 4.23W
View attachment 298054
Same 12V rated bulb, now at 5.21V draws 250mA, so 1.3W
Oh, in case you're wondering, the power supply used is rated at 10A at 12V and 16A at 5V. Not quite sure what other kinds of smoke & mirrors you're about to diss up, but from my perspective this would be a good point for you to throw in the towel. Yes?
Oh, and this gem...
Please do explain how the output power of a system can exceed the input power. I'm all ears. I'm sure the people at CERN and ITER would be very interested as well. Free energy for the people!
Actually many people who are in the electrical field made the same mistake as shutterfinger. I know the reason why also.It's amazing what someone like me can learn from a poster like "shutterfinger." My electrical engineering degree and 48 years of experience, including several as an electronics bench tech, pale in comparison to the physics wisdom obtainable on the Internet.
Now if only "shutterfinger" is willing to share its secrets enabling perpetual motion with the rest of us. Or perhaps rescue Pons and Fleishmann from ridicule by demonstrating they were right about cold fusion.
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