Thank you Carlos. The lamp does slip under a spring clip. I
have to trace out the circuit to see exactly where the lamp is.
The specifications in both instruction books is for a lamp with
somewhat unusual specs. Most 6.3 volt pilot lamps draw more than
60mA by two to four times. I have somewhere a long list of most
types of miniature lamps. Have not found it yet, its in an
engineering handbook. The flash gun probably works fine without
the lamp. I may get this thing working in the future, the main
problem is that the battery is expensive. I have a lot of flash
bulbs, bought them when I saw them, but who knows if they are
still good.
Osram is a European brand, I think it was associated with
General Electric. They also made radio tubes and household and
auto lamps.
On 2/5/2020 3:53 AM, CarlosMFreaza wrote:
I think a miniature 6V and 0.2 amp lamp with the glass matching the flash unit green window and the right size to be clamped on the contact plate could work as test lamp.-
Carlos
El mié., 5 feb. 2020 a las 7:40, CarlosMFreaza (<cmfreaza@xxxxxxxxx <mailto:cmfreaza@xxxxxxxxx>>) escribió:
Richard:
I could read the info in the miniature lamp
metal rim: "Osram 0.2". This lamp has a thread but it is
not screwed to its basis, it is clamped only.
Carlos
El mié., 5 feb. 2020 a las 6:56, `Richard Knoppow
(<dickburk@xxxxxxxxxxxxx <mailto:dickburk@xxxxxxxxxxxxx>>)
escribió:
I didn't think of looking at "Rollei Report". Mine
are the
first editions. I wanted to find the lamp type number.
In both
the "Practical Accessories" booklet and in an
instruction book
for the Rolleiflash 2 I found on Mike Butkus site it
says the
lamp is 6 volts and 50 to 70 milliamps. Its a T-10
miniature
screw base and round globe. I tried a tubular globe
lamp, it
would work but doesn't fit well. The most common pilot
lamps in
radio are the #44 and #47, they both draw considerably
more
current than the lamp specified by Rollei. I will look
at the
Rollei Report and see what I can find.
3
On 2/5/2020 1:21 AM, CarlosMFreaza wrote:
> Richard:
> I checked my Rolleiflash test lamp and
I could
> read "Osram" in the upper metal rim in contact with
the glass,
> there are other signs I couldn't read with the loupe.
The
> circuit scheme in the Rollei Technical Report says 6V
and 38
> for the test lamp position. I don't know if this info
is useful
> for your purposes. I could send you the lamp image
and/or to
> check the lamp again trying to read the signs if they
mean
> something. The lamp is very small.
> Carlos
>
> El mar., 4 feb. 2020 a las 18:27, `Richard Knoppow
> (<dickburk@xxxxxxxxxxxxx
<mailto:dickburk@xxxxxxxxxxxxx>
<mailto:dickburk@xxxxxxxxxxxxx
<mailto:dickburk@xxxxxxxxxxxxx>>>)
> escribió:
>
> The battery seems to be a NEDA Type 215. They are
available
> for about $20.00. I can't identify the lamp. The
closest
> seems
> to be a type #40 but it draws twice the current.
I think it
> might
> fire the bulbs when testing. Perhaps someone knows
> definitely the
> type number.
>
> On 2/4/2020 8:30 AM, `Richard Knoppow wrote:
> > I found the specs for the lamp: 6V @ 60 mA.
A miniature
> > screw base indicator lamp. There is a European
number
> listed in
> > the little booklet "The Practical Accessories".
I will
> find a
> > similar lamp at Grainger or somewhere similar.
>
> --
> Richard Knoppow
> dickburk@xxxxxxxxxxxxx
<mailto:dickburk@xxxxxxxxxxxxx>
<mailto:dickburk@xxxxxxxxxxxxx
<mailto:dickburk@xxxxxxxxxxxxx>>
> WB6KBL
>
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