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Capacitors for old bulb flash



 
 
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  #1  
Old November 17th 04, 12:42 AM
John Fields
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Default Capacitors for old bulb flash

anyone have a source for replaement capacitors for old bulb
type flash units?
  #2  
Old November 17th 04, 02:30 AM
Joseph Meehan
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John Fields wrote:
anyone have a source for replaement capacitors for old bulb
type flash units?


Try Radio Shack.

--
Joseph E. Meehan

26 + 6 = 1 It's Irish Math



  #3  
Old November 17th 04, 02:30 AM
Joseph Meehan
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John Fields wrote:
anyone have a source for replaement capacitors for old bulb
type flash units?


Try Radio Shack.

--
Joseph E. Meehan

26 + 6 = 1 It's Irish Math



  #4  
Old November 17th 04, 03:20 AM
Peter Irwin
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Joseph Meehan wrote:
John Fields wrote:
anyone have a source for replaement capacitors for old bulb
type flash units?


Try Radio Shack.


To expand on this, the capacitor is generally a normal electroyltic
capacitor. A modern unit of the same ratings will generally be
somewhat smaller than the original. Get one of the same or greater
voltage rating and roughly the same number of microfarads. I think
something like 50-100 microfarads would be normal. The batteries
for these tend to be expensive, if you can fit 2 or 3 nine
volt batteries in series in there it could be a lot cheaper.


Peter.
--



  #5  
Old November 17th 04, 03:20 AM
Peter Irwin
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Joseph Meehan wrote:
John Fields wrote:
anyone have a source for replaement capacitors for old bulb
type flash units?


Try Radio Shack.


To expand on this, the capacitor is generally a normal electroyltic
capacitor. A modern unit of the same ratings will generally be
somewhat smaller than the original. Get one of the same or greater
voltage rating and roughly the same number of microfarads. I think
something like 50-100 microfarads would be normal. The batteries
for these tend to be expensive, if you can fit 2 or 3 nine
volt batteries in series in there it could be a lot cheaper.


Peter.
--



  #6  
Old November 17th 04, 10:16 AM
Joseph Meehan
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Default

Peter Irwin wrote:
Joseph Meehan wrote:
John Fields wrote:
anyone have a source for replaement capacitors for old bulb
type flash units?


Try Radio Shack.


To expand on this, the capacitor is generally a normal electroyltic
capacitor. A modern unit of the same ratings will generally be
somewhat smaller than the original. Get one of the same or greater
voltage rating and roughly the same number of microfarads. I think
something like 50-100 microfarads would be normal. The batteries
for these tend to be expensive, if you can fit 2 or 3 nine
volt batteries in series in there it could be a lot cheaper.


I have not tried it, but I would think that a single 9V would work fine.
Those bulbs were usually triggered by a 3V source. The 22.5V with
capacitors increased battery life and reliability, generally only needed for
the professional and high use amateurs.


Peter.


--
Joseph E. Meehan

26 + 6 = 1 It's Irish Math



  #7  
Old November 17th 04, 10:16 AM
Joseph Meehan
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Posts: n/a
Default

Peter Irwin wrote:
Joseph Meehan wrote:
John Fields wrote:
anyone have a source for replaement capacitors for old bulb
type flash units?


Try Radio Shack.


To expand on this, the capacitor is generally a normal electroyltic
capacitor. A modern unit of the same ratings will generally be
somewhat smaller than the original. Get one of the same or greater
voltage rating and roughly the same number of microfarads. I think
something like 50-100 microfarads would be normal. The batteries
for these tend to be expensive, if you can fit 2 or 3 nine
volt batteries in series in there it could be a lot cheaper.


I have not tried it, but I would think that a single 9V would work fine.
Those bulbs were usually triggered by a 3V source. The 22.5V with
capacitors increased battery life and reliability, generally only needed for
the professional and high use amateurs.


Peter.


--
Joseph E. Meehan

26 + 6 = 1 It's Irish Math



  #8  
Old November 17th 04, 10:16 AM
Joseph Meehan
external usenet poster
 
Posts: n/a
Default

Peter Irwin wrote:
Joseph Meehan wrote:
John Fields wrote:
anyone have a source for replaement capacitors for old bulb
type flash units?


Try Radio Shack.


To expand on this, the capacitor is generally a normal electroyltic
capacitor. A modern unit of the same ratings will generally be
somewhat smaller than the original. Get one of the same or greater
voltage rating and roughly the same number of microfarads. I think
something like 50-100 microfarads would be normal. The batteries
for these tend to be expensive, if you can fit 2 or 3 nine
volt batteries in series in there it could be a lot cheaper.


I have not tried it, but I would think that a single 9V would work fine.
Those bulbs were usually triggered by a 3V source. The 22.5V with
capacitors increased battery life and reliability, generally only needed for
the professional and high use amateurs.


Peter.


--
Joseph E. Meehan

26 + 6 = 1 It's Irish Math



  #9  
Old November 17th 04, 06:13 PM
Peter Chant
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On Wed, 17 Nov 2004 10:16:30 +0000, Joseph Meehan wrote:


I have not tried it, but I would think that a single 9V would work fine.
Those bulbs were usually triggered by a 3V source. The 22.5V with
capacitors increased battery life and reliability, generally only needed for
the professional and high use amateurs.


I can't remember what the nominal firing voltage is, but at low (maybe out
of spec) voltages they take longer to fire and are inconsistent. At
higher voltages you don't have this problem. It might be that 22V was
used to fire several bulbs in series or over long cables consistently.

I've only worked with the bulbs the size of a standard GLS bulb. I can't
remember the specific type.

If one bulb over short think cables using a capacitor I agree with the
above poster, it would probally be fine.


Pete
  #10  
Old November 17th 04, 06:13 PM
Peter Chant
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Posts: n/a
Default

On Wed, 17 Nov 2004 10:16:30 +0000, Joseph Meehan wrote:


I have not tried it, but I would think that a single 9V would work fine.
Those bulbs were usually triggered by a 3V source. The 22.5V with
capacitors increased battery life and reliability, generally only needed for
the professional and high use amateurs.


I can't remember what the nominal firing voltage is, but at low (maybe out
of spec) voltages they take longer to fire and are inconsistent. At
higher voltages you don't have this problem. It might be that 22V was
used to fire several bulbs in series or over long cables consistently.

I've only worked with the bulbs the size of a standard GLS bulb. I can't
remember the specific type.

If one bulb over short think cables using a capacitor I agree with the
above poster, it would probally be fine.


Pete
 




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