electromagnetic field therapy

[petit]

Re: electromagnetic field therapy

do you think these are the windings? because if it works like that, there is no reading between the bottom contacts

[budm]

Re: electromagnetic field therapy

There are two windings, see page 16.
It looks like they are connected in series.

[petit]

Re: electromagnetic field therapy

There are two windings, see page 16.
It looks like they are connected in series.

it says 148mOhm/path in that pdf, i'm getting 0.2-0.3 with my meter at one winding and OL at the other

[budm]

Re: electromagnetic field therapy

Well, it is bad, open winding. The problem will be getting the replacement for it.
By the way, it is RI110PC. Mouser does not stock it.
It is 148mili-Ohm (mOHMS) = 0.148 Ohm

[petit]

Re: electromagnetic field therapy

Well, it is bad. The problem will be getting the replacement for it.

yeah, i'm afraid of that too. thanks a lot!!!!! You're the man

[redwire]

Re: electromagnetic field therapy

Whew, if it's the noise filter. It's just copper wire, so I would see if the soldering connections are good.
To find another one, there are many similar common-mode filter chokes you can take from an old PC power supply.

[budm]

Re: electromagnetic field therapy

It is Saturated Choke with very high leakage inductance.
From the spec sheet:
The inductance of saturating-type chokes reduces as load current
increases, and is ideal for attenuating the differential-mode or
symmetrical interference generated by fast-switching thyristors, triacs,
transistors and phase angle control devices. Inductance values are
not shown because the leakage inductance is relatively high.

http://www.coilws.com/index.php?main...th=208_211_250

https://cdn.badcaps-static.com/pdfs/...5de3223722.pdf

[petit]

Re: electromagnetic field therapy

Whew, if it's the noise filter. It's just copper wire, so I would see if the soldering connections are good.
To find another one, there are many similar common-mode filter chokes you can take from an old PC power supply.

i'm trying to find a replacement online, but it looks like an obsolete product. if i cant find it i will have to check for alternatives.
Thank you for the suggestion!

[petit]

Re: electromagnetic field therapy

mouser and digikey are representatives. let see if they have it in stock by any chances.
digikey has the 111PC, but not the 110PC

[petit]

Re: electromagnetic field therapy

mouser and digikey are representatives. let see if they have it in stock by any chances.
digikey has the 111PC, but not the 110PC

they told me it's like special order, they're going to ask the manufacturer for a quote

[budm]

Re: electromagnetic field therapy

Since it is a dual saturated choke not a diff mode choke, you can use two 3A Saturated chokes instead, as you can see in the sample of the diagram how they are used, which is applied to your circuits.

[petit]

Re: electromagnetic field therapy

Since it is a dual saturated choke not a diff mode choke, you can use two 3A Saturated chokes instead, as you can see in the sample of the diagram how they are used, which is applied to your circuits.

Let see if digikey or mouser can find one, if not that might be an alternative, or maybe another brand with same specs?

[budm]

Re: electromagnetic field therapy

Yes, another brand will be fine if they do not have min qty requirement. The 3A rating seems to have typical resistance between 0.1 Ohm (100mOhm) ~ 0.15 Ohm (150mOhm)

[petit]

Re: electromagnetic field therapy

I found it! $26.00 and 8 weeks lead time

[redwire]

Re: electromagnetic field therapy

My bad - it's a dual-core filter which is a bit rare. The datasheet is strange they don't mention how much inductance it has. Checked and the newer parts are a different size, won't fit.
You could short the open inductor and see if it runs

[petit]

Re: electromagnetic field therapy

You could short the open inductor and see if it runs

is that safe to do? i dont want to mess it up again!

[budm]

Re: electromagnetic field therapy

"Inductance values are
not shown because the leakage inductance is relatively high"

[budm]

Re: electromagnetic field therapy

Posting error.

[budm]

Re: electromagnetic field therapy

Posting error.

[budm]

Re: electromagnetic field therapy

I wonder if your transducer or wiring in the XLR connector may be shorted out so it took out the choke which is in series with it.