|
One more update on electronics and no more...
After simulating circuit with LTSpiceXVII, conclusion is they screw up the design.
Diodes are not supposed to be in series with bases of the transistors, they should be connected between base and collector, similar to Schottky-TTL logic family output circuit.
This way transistors do not go into saturation, so their switching-OFF speed increases up to ten-fold.
For actual mod I simply replaced diodes with short jumper wire, and soldered BAT54 diodes on top of existing SS8050 transistors.
The actual minimal pulse width is now ~1/us, 1/8 compared to original.
Last edited by bojan; 08-06-2020 at 12:54 PM.
|