110 power adapter MF-101

[atkbg]

I lost my MF-101 power adapter and need to use it tonight. I know the MF uses 110 5W input, 9V output, but what is the milli-amp rating?

Thanks


Andy
P.S. Sorry if you read this in the other forum. I posted it there by mistake.

[GregAE]

I lost my MF-101 power adapter and need to use it tonight. I know the MF uses 110 5W input, 9V output, but what is the milli-amp rating?

Thanks


Andy
P.S. Sorry if you read this in the other forum. I posted it there by mistake.

Andy,

MC answered this in the other forum (200mA). As he points out, the tip polarity is positive, which is another important detail in locating a suitable substitution. Be aware that most of the readily-available AC adapters for guitar pedals (like the Boss PSA-120T) are 9V, 200 mA, but have a negative tip polarity, which means you can't use them with the MF-101.

-Greg

[basssfx]

Here's a repeat of my previous post:

I laugh when people pay, say, $30 for an adaptor. I don't know what the story is in the States, but here in NZ it's ridiculous.

Now any EE feel free to correct me, but I am quite sure that the current on the adaptor does NOT have to be e.g 200mA "coz that's what the pedal says." Ohm's Law tells us that the higher the voltage, the higher the current will be drawn. So, it is only nesassary to use a regulated voltage (and polarity), especially with digital ones (e.g Boss DD-3 doesn't work with an unregulated supply).

And Moog pedals don't require regulation, as long as the voltage does not go past 15VDC, as that is the extent of the current limiting.

Power adaptors can be thought of as resovoirs; the higher the current, the bigger the resovoir. If you use more current than can be supplied, i.e empty the resovoir , then the power begins to be drawn from the mains supply and you get a lovely 50 Hz hum coming through your gear

I'm going for a 5 amp switchmode supply (yes, 5000mA) to power all my effects with hopefully low noise and more consistent voltage.