Because there is somerthing still not clear to see for me, I want post my question again, but this time in an own thread: I built a lightning ZEN (part1) an I plan to develop it on with the coming parts. Because its hard to get some of the Mosfets specifyed here, I want´t to diskuss advantages and diadvantages of the alternatives: IRFP150 to 450, IRFPC50
I already posted at the aleph output thread:
" Main differences seem to be IRFP150 :100V, Id 42A and IRFP240 : 200V and 20A. Ok, both i think is enough, more than we need. Output capacitance of 240 and 140 is about 1300pF, the 1900pF of the 150 is not much more (?) and to IRFP240 parallel is much more than one IRFP150. One different value i don´t know to judge about: What s forward tranconductance (Gfs)? its 6,9 S (Siemens?) at the 240 and the double (14 S) for the 150. what does this? "
How much "voltage safety margin" is needed an for which purpose?
Whats the effect of this transconductance?
Is 1900pF to much for single device stages?
Are there disadvantages of the 150 type?
greetings from the dark and rainy north of germany, Till
I already posted at the aleph output thread:
" Main differences seem to be IRFP150 :100V, Id 42A and IRFP240 : 200V and 20A. Ok, both i think is enough, more than we need. Output capacitance of 240 and 140 is about 1300pF, the 1900pF of the 150 is not much more (?) and to IRFP240 parallel is much more than one IRFP150. One different value i don´t know to judge about: What s forward tranconductance (Gfs)? its 6,9 S (Siemens?) at the 240 and the double (14 S) for the 150. what does this? "
How much "voltage safety margin" is needed an for which purpose?
Whats the effect of this transconductance?
Is 1900pF to much for single device stages?
Are there disadvantages of the 150 type?
greetings from the dark and rainy north of germany, Till