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M Blink 16, Voltage
Old 08-31-2017, 07:57 AM   #1
LA6NCA
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Default M Blink 16, Voltage

I've got a M Blink 16.
I can not figure out what voltage the bulb is on.
The light bulb is very rare, so I will not risk destroying it.
I have found different information here on the forum.
3.5V, 4.5V and 6V
What is correct?

LA6NCA




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Old 08-31-2017, 08:07 AM   #2
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There were two lamps, one for day, one for night.

a) mit Tagesglühlampe (6V. 7W)
b) mit Nachtglühlampe (6V. 4W)
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Old 08-31-2017, 08:29 AM   #3
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Quote:
Originally Posted by LA6NCA View Post
The light bulb is very rare, so I will not risk destroying it.
To play it safe start from lower voltage anyway - slow gradual start extends bulb life preventing filament stress.

And in case you don't have there original bulb (someone has swapped), starting from lower voltage helps also.

I'm certain that you have a adjustable power supply.
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Old 08-31-2017, 09:30 AM   #4
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The bulbs are nominally 6V, but they were typically operated at 130% nominal voltage. Battery voltages could vary considerably, fresh batteries were operated in parallel and produced about 8V while loaded, when the voltage dropped to 6V they were switched in series with a small series resistance commencing with 8-9 V until the voltage again dropped to 6V and the resistor was bridged. When voltage dropped under 6V, the batteries had to be exchanged. The Hand generator produced 7.6 Volt while cranking at 120 revs per min. Overcranking for longer periods had to be avoided so an eye had to be kept at the rev indicator.

regards,

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M Blink 16
Old 08-31-2017, 03:09 PM   #5
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Default M Blink 16

Thank you for the exact information about the batteries.
This was useful. :-)
I'm going to make another film about Morse lamps.

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