just a thought about opto isolaton the old days you could find black soda straws with a lamp on one end and some kind of sensor * at the other end * a pin diode * a phototransistor* or a cds resistor (light active resistor) they also would use this type of a rig on old wah wah pedels and volume pedels( no noise,like with a pot)maybe a design using resistance? i can not make the jump to how many hours something can hold off 2000 volts,would it depend on the diodes?
-----Original Message----- From: neonixie-l <[email protected]> To: Digest Recipients <[email protected]> Sent: Sat, Nov 30, 2013 11:50 pm Subject: [neonixie-l] Digest for [email protected] - 4 Messages in 1 Topic Today's Topic Summary Group: http://groups.google.com/group/neonixie-l/topics Slightly OT - 2kV voltage isolation? [4 Updates] Slightly OT - 2kV voltage isolation? Grahame Marsh <[email protected]> Nov 30 06:13PM I'm looking to pass a, i2c bidirectional data signal between two systems that have about 2kV voltage difference between their respective "grounds". I can find several device on, say, Mouser's website but I'm getting lost with all the insulation terms. There is a variety of test voltage conditions like "Vrms for 1 minute" and "galvantic isolation in kV". These voltages are typically 4 - 6kV. But I also find "Maximum working insulation VIORM 566 voltage" - so does this mean a normal working voltage difference? And so well less than 2kV. Sorry, but I need an idiot's (that's me) guide to what isolation voltage I should be looking for to isolate these systems that live 2kV apart? I know there are solutions that use multiple optoisolators and drivers but I was looking for a single chip solution. Any helpers please? (The application is between a microcontroller and the cathode circuit of a CRT so it is almost on topic.) Grahame -- 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/8D0BDDAA5342D0E-8C8-984BD%40webmail-va021.sysops.aol.com. For more options, visit https://groups.google.com/groups/opt_out.
