what PIC output circuit would i need to drive a 12v florescent display?
I've acquired an old but working 20 * 2 florescent display from an old POS till. its a 12v serial device that powers up and display's its welcome message etc...
I've fried one 18x already connecting this to the display, but the problem is that i dont know what sort of current i'm dealing with on the serial in line.
what resistor values should i try on the serial line?
should i tie the resistor to +Ve or -Ve, (5v or 12v) or should i be using transistor circuit?
Is there a simple guide to driving circuits with differing voltages?
If its any help the device came out of an old IBM pos till and has a model number of 52210112
Thanks... (that's a lot of questions for one post!)
I've acquired an old but working 20 * 2 florescent display from an old POS till. its a 12v serial device that powers up and display's its welcome message etc...
I've fried one 18x already connecting this to the display, but the problem is that i dont know what sort of current i'm dealing with on the serial in line.
what resistor values should i try on the serial line?
should i tie the resistor to +Ve or -Ve, (5v or 12v) or should i be using transistor circuit?
Is there a simple guide to driving circuits with differing voltages?
If its any help the device came out of an old IBM pos till and has a model number of 52210112
Thanks... (that's a lot of questions for one post!)