Radio off a Inverter
Submitted: Thursday, Jun 01, 2006 at 15:03
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Shane (QLD)
Does anyone know if you can run a 240v Radio/Cassette ( Panasonic) off a 12v /240v modified synewave inverter on AM without interferance or do you need a pure wave inverter ? Have tried to run it off a Bunnings special 850w but only get
feedback from the genset which makes it impossible to listen to (No I'm not investing in a Honda or a set of batteries). I noticed that it will run OK on FM but unfortuneately that does not apply to where I will be. Thanks in advance !
Reply By: MartyB - Thursday, Jun 01, 2006 at 17:08
Thursday, Jun 01, 2006 at 17:08
Shane,
I have been looking at a radio/CD player at the Warehouse group (Solleys).
It is 240v plus runs off 8 D size batteries.
8 * 1.5v batteries is 12v.
I have been thinking about buying one of these and just soldering a 12v lead to the battery connections.
Only costs $29 so it is worth a go.
Marty.
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176158
Follow Up By: Member - Doug T (QLD) - Thursday, Jun 01, 2006 at 19:19
Thursday, Jun 01, 2006 at 19:19
Huh ...anything from Sollys would have to be silly and one would be silly to waste 29bucks on shiiit that's made in china , that's my opinion , if thats what you want then go for it....................
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Follow Up By: geocacher (djcache) - Thursday, Jun 01, 2006 at 21:10
Thursday, Jun 01, 2006 at 21:10
You'd be surprised how many radio cassettes took 8 C or D cells.
I've got an old Sanyo that I did that to. It works a treat. Ditch the generator and you won't have to turn the radio up so loud.
Besides the power under the bonet (aux battery) is cheaper than fuel at $1.50 a ltr for the generator.
I did the same thing at one stage to a cheap 12v cordless drill. 8 foot of lead and a set of battery clips on the end from some cheap jumper leads. Very handy.
Dave
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Reply By: Member - Andrew W (SA) - Friday, Jun 02, 2006 at 09:44
Friday, Jun 02, 2006 at 09:44
The interference does not come down the power line. It comes through the "air".
I have a 500W Pure Sine Wave invertor in the vehicle and on pretty much full time, and have no interference on the AM radio - although admittedly the aerial is outside the vehicle.
So, a little bit of distance from your inverter and you should be fine.
Ciao for now
Andrew.
AnswerID:
176283
Follow Up By: Mike Harding - Friday, Jun 02, 2006 at 10:44
Friday, Jun 02, 2006 at 10:44
Also depends on the rating and type of load you are running from the inverter. If it is just switched on or running a light load then with an external aerial and a car radio (which will have internal circuitry to reduce noise) you may
well get away with it. Connect a 500W motor to your inverter and I'll bet you hear it on the AM band.
I wonder how many
inverters have CE approvals for emissions? Not many I suspect :)
Distance is a factor as the energy generated decreases with the square of distance (iir theory correctly) but depending upon the load you may need a considerable distance.
Shane mentioned he was also running a fridge (may have a switch mode PSU inside it which is generating noise) and lights - if the light are fluorescent they will produce noise too and if the gen set is a GMC type the distortion in the sine wave output will add to the whole thing. Personally I have a small Sony radio which I run off 4 AA cells and as it's usually the only electrical thing operating for
miles I don't have a problem.
Mike Harding
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