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 Philips valve battery charger
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 Return to top of page · Post #: 1 · Written at 5:13:20 PM on 1 February 2015.
Jimdrane's Gravatar
 Location: Cootamundra, NSW
 Member since 1 February 2015
 Member #: 1698
 Postcount: 3

I have a philips valve battery charger, very old and working, it has 2 huge rectifier valve. If anyone is interested I could post a photo. It is called a Philips Rectifier Type No 1370. The valves are Revell R49 and L49. Are these still obtainable anywhere?

 Return to top of page · Post #: 2 · Written at 5:57:39 PM on 19 February 2015.
Brad's avatar
 Location: Greenwich, NSW
 Member since 15 November 2005
 Member #: 1
 Postcount: 6084

G'day Jim,

If you'd like photos posted you can e-mail them to me, my address can be accessed by clicking on my username.

A valve a day keeps the transistor away...

 Return to top of page · Post #: 3 · Written at 2:11:04 PM on 7 March 2015.
Labrat's avatar
 Location: Penrith, NSW
 Member since 7 April 2012
 Member #: 1128
 Postcount: 288

I would like to see pictures of the battery charger. It sounds like it might have a Mercury rectifier in it.

I can't find any information on the valve types listed.


 Return to top of page · Post #: 4 · Written at 3:22:19 PM on 7 March 2015.
Marcc's avatar
 Location: Wangaratta, VIC
 Member since 21 February 2009
 Member #: 438
 Postcount: 4135

Those are likely to be Barretters aka Ballast tubes? Iron filament in an atmosphere of Hydrogen, used as voltage / current regulators.


 Return to top of page · Post #: 5 · Written at 9:35:41 PM on 8 March 2015.
Airzone's Gravatar
 Location: Maclean, NSW
 Member since 30 May 2008
 Member #: 291
 Postcount: 341

Sounds like the one I have, is the charger round? The barrettors are impossible to find for these.
P.S. Just checked, mine is a 1009 Philips, still looking for a regulator valve.

 Return to top of page · Post #: 6 · Written at 10:32:22 PM on 8 March 2015.
Marcc's avatar
 Location: Wangaratta, VIC
 Member since 21 February 2009
 Member #: 438
 Postcount: 4135

Barretter never totally died. I have had Metz flashguns that used Nickel Cadmium Batteries. These did have a bad habit at times of reversing polarity. Putting a fuse in would not be helpful charging, so a small barretter (like a grain of wheat globe) was built into the battery pack. This acted as a current limiter to prevent the transformer cooking.

I actually incorporated this into the no break that is on the fire scanner. If the battery is flattened a series globe actually limits the current and as the battery gains charge the voltage drop is lesser & the current rises. Saving the regulator, or transformer. I checked it recently & the 1998 battery is still good.


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