Actually, in most if not all of the voltage regulator/voltage reference tubes, at least a pair of the pins are used as security feature. This is just a short circuit between two pins that are used to disconnect the output of the power supply when the regulator is not in the socket to avoid unregulated high voltage going into the load when the regulator/reference is not in. It is interesting to see that very few of the new circuits that use this voltage regulators do not make use of this security feature.
On Friday, May 18, 2018 at 3:02:32 AM UTC-3, Tomasz Kowalczyk wrote: > > > > Voltage stabilizers use extra pins just for rigidness of internal > structure - they are essentially neon tubes, like nixies, but have larger > working areas to support currents varying between 5mA and 30-40mA. So their > model has only two electrodes, but as there are more present in the > envelope, then why not use them as extra mechanical support. > -- 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/00e6bda1-b54b-43d4-b347-889a28fb735e%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.