Thanks for mentioning the HV5522. I wasn't aware this device existed. Just be aware that VCC is nominally 12V, so you cant drive the inputs with TTL-level signals (you need a level-shifter). That shouldn't be a problem because you only need 4 or 5 signals from the Arduino. Going direct-drive is a wise choice, and you wont regret it.
I doubt the 10uA leakage current will be enough to cause unwanted glowing, but if you want to be extra paranoid then use the HV5530 with a higher voltage rating. Leakage tends to be proportional to the voltage-stress, so using a higher-rated device should result in less leakage. I suspect the manufacturer tests their devices > 300V, and the least-leaky ones are rated for 300V, whereas the leakier ones are rated 220V. I can't tell what's inside the HV supply, so that's my only concern. There's a history of problems with HV supplies on this group. I prefer a voltage-doubler from the AC mains, which gets me +340VDC in the US. It wastes a bit of energy in the dropping resistors, but I dont use a transformer so that reduces the loss. You just have to be very careful with the design because it's NOT isolated. -- 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/e461f60e-5f60-473c-9c0e-f7e55efa6256%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
