Experimenting with MOSFETs: Output Characteristics

RE: Experimenting with MOSFETs: Output Characteristics

shabaz — Thu, 02 Jan 2020 16:24:29 GMT

Hi Jon,

Awesome report, and very useful circuit! It would make a nice kit, for people to assemble their own mini-curve-tracer.

RE: Experimenting with MOSFETs: Output Characteristics

fmilburn — Wed, 01 Jan 2020 17:07:24 GMT

Hi Jon,

The curves really turned out nice and the design is quite elegant in its simplicity. I am trying to understand the measured current Id though. In the manufacturer’s curve for the BS170 the drain current is 1.8 A for Vgs of 10 V and high Vds. The measured value is greater than 2.6 A. Am I reading Vgs correctly on the oscilloscope trace? Great post...

Frank

RE: Experimenting with MOSFETs: Output Characteristics

genebren — Wed, 01 Jan 2020 16:18:01 GMT

Another very interesting experiment/blog on MOSFETs. I really enjoy reading through your experiments and am very impressed with the results that you achieve.

Thanks for sharing!