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Post by mark on Jan 23, 2019 17:47:56 GMT
Here's a picture.....see if enlarging focuses it enough. You will see the AC symbol on the output and no polarity. It's just a transformer, that's all.
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Post by mark on Jan 23, 2019 18:02:02 GMT
Boomer said..."There are AC to low voltage AC wallworts, with the DC conversion circuitry inside of the piece of electronics rather than in the part you plug in. That's often used when the electronics needs several voltages, or a split supply with positive and negative voltages. In that case a DC supply wouldn't work, it needs the AC sine wave to get both +/- voltages".
Yes I asked Michael at Decade about this and he said that exactly. The design is like that so it can get the audio quality to HI-FI standard. The circuit needs a positive and negative DC voltage to work and therefore the sine wave and an A/C supply. Did suggest to have the complete power supply on board instead of using a wallwart for power.
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Post by End80 on Jan 23, 2019 19:04:55 GMT
"I've never seen an AC to AC wallwart.. Ok, maybe I'm misunderstanding something here. The wallwart I use for my Rangemaster is a AC/DC Adapter Transformer, input 120v, output 12v dc --I don't think this is the one that came with it, (it was like 16 or 18v) but it's the one I've used for at least 6 or 7 years. On the boat I just eliminated the transformer and plugged directly into the 12v system.
You're saying your wallwart output is AC? I thought all wallwarts were DC output".
Well that fact shows my ignorance! I thought all wallwarts were AC/DC converters |
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Post by End80 on Jan 23, 2019 19:07:32 GMT
Boomer said..."There are AC to low voltage AC wallworts, with the DC conversion circuitry inside of the piece of electronics rather than in the part you plug in. That's often used when the electronics needs several voltages, or a split supply with positive and negative voltages. In that case a DC supply wouldn't work, it needs the AC sine wave to get both +/- voltages".
Yes I asked Michael at Decade about this and he said that exactly. The design is like that so it can get the audio quality to HI-FI standard. The circuit needs a positive and negative DC voltage to work and therefore the sine wave and an A/C supply. Did suggest to have the complete power supply on board instead of using a wallwart for power.
After looking it up I see that now, although notice some of their other of Decade transmitters do have 12v DC |
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Post by mark on Jan 23, 2019 21:56:24 GMT
The only Decade that has a 12volt DC supply is the CM-10 which isn't made anymore and was a remake of the Chinese 05B to BETS-1/part 15 standards.
The Decade MS-100 like mine uses the AC 16 volt wallwart and so does the LX series. So on your boat the Decade will work, just needs the inverter.
Some compressors are like this too where the complete power supply in not incorporated, and some Behringer stuff is the same too. My answering machine with my land line phone needs a 9 volt A/C wallwart also.
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