I think there's a small typo in Current Sink.pdf. At the end of the description for the circuit on the left, "(Ir1 / 100) to satisfy Q1 hFE.", shouldn't that be Ir2?
On Thursday, October 15, 2015 at 5:56:30 PM UTC-7, taylorjpt wrote: > > Current sinks are the easiest thing to build so long as you have some > reference voltage to start with. The PDF shows a simple saturated cathode > drive for well regulated HV and two variations of current sinks (Actually a > current sink and current source!) where the first needs to be attached to > every cathode and the second can be shared between cathodes in a multi > cathode display such as a 1-of-10 nixie. The current sinks have the > advantage that they are relatively immune to variations in the high voltage > rail as well as variations in cathode conduction voltage. > -- 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 [email protected]. To post to this group, send an email to [email protected]. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/efa161b0-0e72-4a3e-a1ac-7001b3a2bb5a%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
