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Old 17th January 2006, 12:55 AM   #1
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Default Whose Logo is this for this Part?

Hello,

I have searched high and low on the internet hoping to be lucky to find the manufacturer of a capacitor I have found. Below the Logo is the following:

1.5uF
G 160
1.48MKP
1.5uF
G 160 S9

The logo is above the lettering noted above. As the capacitor is round tublar I have created a file that is very close to logo. Close meaning I am not sure of the exact proportion of the logo and its elements. I am confident the graphic I made is close enought that anyone that knows it will be able to identify the company it belongs to.

Once the company is identified any comments on experiences they or anyone they know has about the company part quality and experiences woudl be helpful. The capacitor is being considered as an input coupling capacitor to a n-channel amplifier.

Thanks in advance for your assistance.


Regards,

John L. Males
Willowdale, Ontario
Canada
16 January 2006 20:56
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Old 20th January 2006, 04:59 PM   #2
mf1941 is offline mf1941  United States
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That's a Plessey/Westlake Metalized Poyropylene Capacitor.

Mallory used to market them.
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Old 20th January 2006, 05:01 PM   #3
mf1941 is offline mf1941  United States
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If you need a spec for them send me an email.

We have tech data as we still sell them, Thanks!
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Old 30th January 2006, 06:39 AM   #4
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Hi mf1941,

Thanks very much for your reply.

Feel free to eMail me the specs on the specific capacitor I noted, and what else is in that product line of MKP and MKT from a speficication prespective. I will then be able to access suitability for the application at hand.


Regards,

John L. Males
Willowdale, Ontario
Canada
30 January 2006 02:42
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Old 30th January 2006, 08:17 AM   #5
lineup is offline lineup  Sweden
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MKP = Metalized Polypropylene Capacitor
is best possible quality film capacitor, for input or signal, we can use

1uF - 4.7uF is a good value for most inputs, depending on input impedance.

These capacitors are expensive, due to their very good electrical qualities.
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Old 30th January 2006, 09:06 AM   #6
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Hi lineup,

Thanks for your posting. Though many say a MKP is best choice, there are some that suggest an MKT is also very good choice for input coupling capacitor.

There is a school of those that seem to hold the opinion that it is better not to use an input coupling capacitor at all, and they had used a MKP or some "very very very" high grade (AKA expensive) before deciding not to use an input coupling capacitor.

Maybe you can answer the question I posted on what R is the input impedance Zin re:

<Calculating values for input coupling capacitor>

I have a few more example input circuit topologies to post, but I will do one at time as I learn the answers to the prior simpler topology first.


Regards,

John L. Males
Willowdale, Ontario
Canada
30 January 2006 05:08
mailto:jlmales@softhome.net
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Old 31st January 2006, 06:41 PM   #7
kmj is offline kmj  Sweden
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You didn't have a picture so I looked around in my box and found this:
Click the image to open in full size.

Something like that? This one is quite large thou. approx 15cm top to bottom
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Old 31st January 2006, 10:56 PM   #8
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Hi kmj,

Yes, the logo is exacly the same, but as you are aware the capacitors I have are axial type about inch (25 mm) long, and about 1/4 inch (6 mm) diameter in physical size, and an MKP type. Sorry I do not have a digital camera or I woudl have posted the actual image with the infor on the capacitor on it if I had a digital camera.


Regards,

John L. Males
Willowdale, Ontario
Canada
31 January 2006 18:59
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