A friend of mine comes to me and ask to build him a mosfet amp, but he gave me 2SK176 and 2sJ50's.... I know they are not exact compliments but it his only stocks 4 pcs K176 and 4 pcs J50..He could not find K135 or J56 and if there is, it's definitely expensive
Looking at the attached datasheet...k176/j56 are higher voltage /wattage (200v/125w) version of the K135/J50.
What will be the consequences if I push-through the project using PP amp sch with +/- 50V rails?
Looking at the attached datasheet...k176/j56 are higher voltage /wattage (200v/125w) version of the K135/J50.
What will be the consequences if I push-through the project using PP amp sch with +/- 50V rails?
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With 70 views no one have the idea if it's possible. These are laterals i think VGS will be the issue. Looking the typical transfer characteristics there's only a slight variance in Vgs with reference to Drain current.
With the verticals like the IRF's and FQP's , this is possible as long as the rds is closely match irregardless of max VDD and Max drain current capability as well as Crss, Ciss and Coss.
Any can shade some light here?
With the verticals like the IRF's and FQP's , this is possible as long as the rds is closely match irregardless of max VDD and Max drain current capability as well as Crss, Ciss and Coss.
Any can shade some light here?
Attachments
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keep voltages in sane region for lower voltage parts and that's it
N and P polarity of these mosfets - regarding capacitances, even for strict complementary parts , aren't the same - that's why you can see (often) additional picocaps on one side of OS
I had opportunity to see Hafler DH200 coming from factory with mixed (as your intention) mosfets in output - one polarity for DH200 , other one for DH500
N and P polarity of these mosfets - regarding capacitances, even for strict complementary parts , aren't the same - that's why you can see (often) additional picocaps on one side of OS
I had opportunity to see Hafler DH200 coming from factory with mixed (as your intention) mosfets in output - one polarity for DH200 , other one for DH500
keep voltages in sane region for lower voltage parts and that's it
N and P polarity of these mosfets - regarding capacitances, even for strict complementary parts , aren't the same - that's why you can see (often) additional picocaps on one side of OS
I had opportunity to see Hafler DH200 coming from factory with mixed (as your intention) mosfets in output - one polarity for DH200 , other one for DH500
That's a big enlightenment Zen Mod....Thanks.
Keeping the same voltage that will not exceed the lower pair.
According the owner of these Mosfets it was originaly intended for Hafler's as repair kits and these are the ones left and cannot find exact compliments.
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Looking at the attached datasheet...k176/j56 are higher voltage /wattage (200v/125w) version of the K135/J50.
You might run into a thermal issue as the lower wattage parts may tend to heat up more than the higher wattage ones, which could result in stability and bias problems.
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