PCS Electronics PCS Electronics - home page PCS Electronics  
RegisterSearchFAQAM & FM Radio transmitters shop UsergroupsLog in
Power Input from Car for FM transmitter + Antenna

 
Reply to topic    PCS-Electronics Forum Index » FM transmitters View previous topic
View next topic
Power Input from Car for FM transmitter + Antenna
Author Message
endgame
New registered user
New registered user


Joined: 19 Sep 2007
Posts: 6

Post Power Input from Car for FM transmitter + Antenna Reply with quote
Ok so Petrol (Oil/Gas) is expensive....but what if you are on the move....and want to transmit FM from the Downtown core (where you don't live).

Is there a way to connect an electric wire to the battery for power output?


Considering the electric wire will be a separate (car) battery, which will get boosts every few hours from the car's battery.
Thu Sep 27, 2007 4:14 am View user's profile Send private message
pcs
Site master
Site master


Joined: 18 Jan 2002
Posts: 3063
Location: Radio Land

Post Reply with quote
??

I hope you won't be trying this as it might be lethal the way you describe.
You're in for a nice explosion, possibly fatal.

_________________
Best regards,
Marko - PCS Electronics
--------------------------------------------------------
Turn your PC into a FM radio station!
http://www.pcs-electronics.com
fax +386 4 2316 128
Thu Sep 27, 2007 11:39 am View user's profile Send private message Visit poster's website
endgame
New registered user
New registered user


Joined: 19 Sep 2007
Posts: 6

Post Reply with quote
So why would it explode, in the method I have shown above?

------


Maintenance free (MF) Batteries rely on valves fitted to each cell which can vent hydrogen if over-pressurisation occurs. Generally however, oxygen and hydrogen recombine in the space above the electrolyte, so that over-pressurisation rarely occurs. However, should such a condition occur, and the valves fail to operate (through being blocked for example), then there is a possibility of an internal explosion if the oxy-hydrogen mixture is ignited. Just a slight jolt can cause a spark to jump between the posts, and the gas explodes. Personal injuries can result. The condition can be assessed if any swelling in the cell walls of the battery is visible. The swelling from internal pressurisation varies from cell to cell, that at the battery ends being most obvious, because the plastic is unsupported by cells at either side. It is surprising how powerful an explosion can be caused in the small air space above the electrolyte can occur, but when one cell explodes, it sets off a chain reaction in the rest. Such batteries should be isolated and discarded, taking great care using protective personal equipment (goggles, overalls, gloves etc) during the handling.

----

I am confused
d'oh!
Mon Oct 01, 2007 4:41 pm View user's profile Send private message
pcs
Site master
Site master


Joined: 18 Jan 2002
Posts: 3063
Location: Radio Land

Post Reply with quote
You mentioned mains voltage and batteries, no AC/Dc power supply or charger was mentioned anywhere.

I think connecting 110V or 220V directly to a battery could have highly reactive results.

_________________
Best regards,
Marko - PCS Electronics
--------------------------------------------------------
Turn your PC into a FM radio station!
http://www.pcs-electronics.com
fax +386 4 2316 128
Mon Oct 01, 2007 5:15 pm View user's profile Send private message Visit poster's website
endgame
New registered user
New registered user


Joined: 19 Sep 2007
Posts: 6

Post Reply with quote
pcs wrote:
You mentioned mains voltage and batteries, no AC/Dc power supply or charger was mentioned anywhere.

I think connecting 110V or 220V directly to a battery could have highly reactive results.


Umm...When the battery goes down...then I will it give a boost?
Mon Oct 01, 2007 7:30 pm View user's profile Send private message
pcs
Site master
Site master


Joined: 18 Jan 2002
Posts: 3063
Location: Radio Land

Post Reply with quote
But do not charge it while using it for the transmitter. Most chargers are not stabilized meaning
you can have lots of AC left and peaks can go way above 14V.

_________________
Best regards,
Marko - PCS Electronics
--------------------------------------------------------
Turn your PC into a FM radio station!
http://www.pcs-electronics.com
fax +386 4 2316 128
Tue Oct 02, 2007 9:08 am View user's profile Send private message Visit poster's website
Display posts from previous:    
Reply to topic    PCS-Electronics Forum Index » FM transmitters All times are GMT + 1 Hour
Page 1 of 1

 
Jump to: 
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum


Powered by phpBB © 2001, 2005 phpBB Group