On Wednesday, November 5, 2025 at 5:59:08 PM UTC-5 gregebert wrote:
If you have a very-high impedance voltmeter, you might want to check the voltages while the CRT appears "normal". I suspect you will see notable differences between your measurements and the schematic. Yeah - I learned the hard way many years ago working on tube amps that normal meters and tube voltages don't mix well. I may try the 10X resistor method, if only to compare ratios and not worry about exact accuracy. Thanks for the suggestion. And yes - the goal is to achieve ttl level signal control, so the capacitor arrangement needs to go. I've seen a few examples of using transistor switching, but the trick seems to be getting a manageable potential difference of maybe 40V to be able to sneak in an optocoupler. -- 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 view this discussion, visit https://groups.google.com/d/msgid/neonixie-l/07f313ee-ac01-499f-9db4-8300e88f90fbn%40googlegroups.com.
