> > > I will try the biasing. would biasing both sides help? This would be sort > of like terminating the lines. >
No need to worry about termination at this frequency, as in reflected waves, unless your PCB traces are several feet long... I did check the datasheets for the MPSA42/MPSA92 and they are a good choice because they have low leakage and high Vceo. Therefore *driver* leakage is not your problem; can you post a schematic of the driver & predriver circuits ? It could be the predriver. It's possible the device driving your PNP anode driver is leaky, causing the PNP to turn-on slightly. Are you using a NPN predriver --> PNP driver arrangement ? If so, your NPN device could be leaking 0.1uA and your PNP will conduct "beta" times this. This is easy to fix with a resistor across the PNP's base/emitter to shunt-away the predriver leakage. It's also possible there is noise entering the predriver; this is where a scope will help. If you dont have a scope, then proceed with debugging he predriver. -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving emails from it, send an email to neonixie-l+unsubscr...@googlegroups.com. To post to this group, send an email to neonixie-l@googlegroups.com. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/6c5852ba-b890-4d1d-b20f-0a4c2ab78324%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
