Will AA batteries power this solenoid OK?

[Scott Fuhrman]

Hello,

I am building a project that uses a wireless RF remote control to
momentarily fire a solenoid to release a latch mechanism.

The solenoid I am using is this one:
http://www.allelectronics.com/cgi-bin/category.cgi?item=SOL-81

It has a 26.7 ohm coil and rusn at 12 volts, so using ohms lay I
figured that it will draw about .45 amps during the moment where the
plunger is retracted.

Because this project is portable, I would like to keep the weight
down. My plan was to go with (8) AA batteries to produce the 12 volt
source. So, are eight AA batteries capable of handling a .45 amp
current draw for a moment? The solenoid would be actuated for less
than a second, and fairly infrequently.

Thanks,

Scott

 

[John Larkin]

On 5 Dec 2004 10:18:57 -0800, scottfuhrman@hotmail.com (Scott Fuhrman)
wrote:

Hello,

I am building a project that uses a wireless RF remote control to
momentarily fire a solenoid to release a latch mechanism.

The solenoid I am using is this one:
http://www.allelectronics.com/cgi-bin/category.cgi?item=SOL-81

It has a 26.7 ohm coil and rusn at 12 volts, so using ohms lay I
figured that it will draw about .45 amps during the moment where the
plunger is retracted.

Because this project is portable, I would like to keep the weight
down. My plan was to go with (8) AA batteries to produce the 12 volt
source. So, are eight AA batteries capable of handling a .45 amp
current draw for a moment?

Easily. Alkaline AAs have a short-circuit current close to 10 amps.

John

 

[Scott Fuhrman]

Cool. Thanks for the replies everyone.

Scott


John Larkin <jjlarkin@highlandSNIPtechTHISnologyPLEASE.com> wrote in message news:<ehm6r05up26urs2fe8nci02lksusmv4vvi@4ax.com>...

On 5 Dec 2004 10:18:57 -0800, scottfuhrman@hotmail.com (Scott Fuhrman)
wrote:

Hello,

I am building a project that uses a wireless RF remote control to
momentarily fire a solenoid to release a latch mechanism.

The solenoid I am using is this one:
http://www.allelectronics.com/cgi-bin/category.cgi?item=SOL-81

It has a 26.7 ohm coil and rusn at 12 volts, so using ohms lay I
figured that it will draw about .45 amps during the moment where the
plunger is retracted.

Because this project is portable, I would like to keep the weight
down. My plan was to go with (8) AA batteries to produce the 12 volt
source. So, are eight AA batteries capable of handling a .45 amp
current draw for a moment?



Easily. Alkaline AAs have a short-circuit current close to 10 amps.

John

 

Yes, remember to always use alkaline over cheap heavy duty brands. They
are far superior in every way.

 

[Fritz Schlunder]

"Scott Fuhrman" <scottfuhrman@hotmail.com> wrote in message
news:bc4881b9.0412051018.79c9962f@posting.google.com...

Hello,

I am building a project that uses a wireless RF remote control to
momentarily fire a solenoid to release a latch mechanism.

The solenoid I am using is this one:
http://www.allelectronics.com/cgi-bin/category.cgi?item=SOL-81

It has a 26.7 ohm coil and rusn at 12 volts, so using ohms lay I
figured that it will draw about .45 amps during the moment where the
plunger is retracted.

Because this project is portable, I would like to keep the weight
down. My plan was to go with (8) AA batteries to produce the 12 volt
source. So, are eight AA batteries capable of handling a .45 amp
current draw for a moment? The solenoid would be actuated for less
than a second, and fairly infrequently.

Thanks,

Scott

Fresh AA alkaline batteries will easily be up to your task at hand. To get
an idea of what they are capable of fresh AA alkaline batteries can
typically juice out a fair amount more than 10 Amps (IIRC) of short circuit
current into a low resistance short. A typical two cell AA flashlight lamp
for instance will often draw around 0.5A from the cells. Zinc chloride and
carbon zinc batteries are rather another matter. When these types of
batteries start getting even the slightest bit low they have hideously wimpy
output capability. Even when fresh and new they are wimpy though could
still handle your 0.45A for a little while.