[NJARC] connecting batteries in series

[Mike Feher]

Vic -

It depends on how much room you have. You say transistor radio, but, then it
also has tubes in it. So, it is probably a hybrid. In the early hybrids the
transistors were typically only used in the audio output section. Obviously
the 45 volt battery is for the high voltage for the pencil tubes and the 4.2
volt mercury is probably for the filaments and the transistors. Again,
depending on the room available, three AAA batteries, or AA batteries in
series would work. Soldering is no problem, just do it quickly so the
batteries do not get too hot. Use small jumper wires between them. Arranged
in a triangular fashion, they should not take up too much room. You may also
consider NiMh batteries readily available for cell phones and home phones,
however, charged, they are only about 3.8 volts. They should work fine.
Instead of replacing them when depleted, you would just have to re-charge
them. Again, depending on the room available, 5 9 volt batteries would also
serve well for your 45 volt battery and be a heck of a lot cheaper. I have
several hundred brand new 9 volt batteries if you would like to go that
route. I also have about 100 brand new NiMh 3.6 volt battery packs and would
be glad to send you one to play with. Regards - Mike

Mike B. Feher, N4FS
89 Arnold Blvd.
Howell, NJ, 07731
732-886-5960




-----Original Message-----
From: njarc-bounces at mailman.qth.net [mailto:njarc-bounces at mailman.qth.net]
On Behalf Of victor bellini
Sent: Tuesday, January 26, 2010 11:02 AM
To: njarc at mailman.qth.net
Subject: [NJARC] connecting batteries in series

Just remember 
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_________________________________________________________
I am working on a project involving an old crosley transistor radio that my 
dad brought home when I was but 12 years old. It actually has tiny tubes in 
it (not mini's). It has two batteries including a 45 volt and a 4.2 volt 
mercury.
To my surprise, the 45 volt battery is still manufactured by Eveready but 
the 4.2 volt mercury is long out of production. I have learned that placing 
three AAA batteries in series is an acceptable 4.5 volt alternative but do 
not know how to connect the batteries. Soldering seems like a dangerous 
alternative. I am looking for suggestions on how to connect single cell 
batteries together. Thanks. 

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