30 Oct
2025
30 Oct
'25
1:30 a.m.
On Wed, 29 Oct 2025, hupfadekroua wrote:
what do You think about:
2N3640 -> 2N3906
2N3693 -> 2N3904, 2N2222A, BC337-25
I've tested exactly those types. They are all too slow. For example, when
you cascade the three independent stages on an R211 module, feed the first
stage with a clock of around 1 MHz, and just replace one of the 2N3639
with a 2N3906, the turn-off slope after the last stage will be delayed
from around 30ns to 200ns!
But we will test the trick with the Baker clamp on the 2N3906.
Christian