[rollei_list] Re: Rolleiflash Disaster

  • From: Eric Goldstein <egoldste@xxxxxxxxx>
  • To: rollei_list@xxxxxxxxxxxxx
  • Date: Wed, 9 Dec 2009 18:23:34 -0500

I would put it in the category of falling into the statement "Not all
versions of the 283 have high trigger voltages." ;-)

http://www.botzilla.com/photo/strobeVolts.html

As reported by users, 283's made after '87 measure between 5-10 volts
at the hotshoe...

I think the IB for for 2.8C states that the Rollei isolates up to 200
volts... this from memory so it may not be correct...


Eric Goldstein

--

On Wed, Dec 9, 2009 at 5:54 PM, Don Williams <dwilli10@xxxxxxx> wrote:
> At 03:05 PM 12/9/2009, you wrote:
>
> Not all versions of the 283 have high trigger voltages.
>
> What category would you put 256 volts, just measured right now?  As I said,
> this unit is at least 30 years old and I remember waiting anxiously for it
> to arrive from New York.  I think I paid $80 something for it and thought it
> was pretty hot at the time.
>
> I think it's in the high voltage category and the current drawn when you
> connect the contacts externally makes a pretty significant spark.
>
> The 283 replaced a high-voltage DC battery unit I bought in Panama in 1953.
> I think that unit used a 67.5 volt, (perhaps even higher) battery and it was
> the first strobe I had ever seen.
>
> In reflection I think the battery was higher than 67.5 volts but only
> Richard K will remember the voltages that were available in batteries in
> that era.  I should know but my mind is dropping old things like that to
> make room for new things.  I do remember that the flash head was separate
> from the battery pack and that it worked quite well once I ground the cam
> and added a set of contacts synchronized for X delay, X being zero in my
> nomenclature.)  When you think about it F and M flash settings were
> advances, not delays, no?  That would really mean that "delay" relates to
> the time for the flash bulb to be at or near it's peak light output.
>
> One more comment- I always used M5 and other small bulbs with my
> Rolleimarin, even though strobes were becoming available.  The bulbs always
> had more light output than small strobes of those days.
>
> DAW
>
> Eric Goldstein
>
> On Wed, Dec 9, 2009 at 4:01 PM, Don Williams <dwilli10@xxxxxxx> wrote:
>> At 10:34 AM 12/9/2009, Eric wrote:
>>
>> I agree with this. The 285 was bulky and overblown with an emphasis on
>> useless features rather than sleek performance. A low voltage trigger
>> 283 is still very much a great ally in the camera bag...
>>
>>
>> Eric Goldstein
>>
>> I've had a 283 for 30 years or more and like it's features.  In addition
>> to
>> the wide and narrow beam lenses, it has a remote sensor for off-camera
>> sensing, the ability to use AC power, and some other features I don't
>> remember because the accessories are out of sight.
>>
>> The only downside is that it has a high voltage trigger which I assume is
>> not good for my cameras.  I understand the later models had a low voltage
>> sync signal and there is also available, somewhere, an adapter that deals
>> with this high voltage, high current trigger problem, protecting the sync
>> contacts.  I used it for many years on several cameras before learning
>> that
>> there was a lower sync current version.
>>
>> DAW
>
---
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