Vacuum Fluorescent Display Circuit Diagram. A vacuum fluorescent display vfd is a type of display that utilises anodes coated in a fluorescent material. We have seen how to reverse engineer pinouts of three vacuum fluorescent display vfd devices.
This has the advantage in that it only requires 10 to 15 volts dc to illuminate the display and in some cases illumination is possible using standard 12 volts c mos logic. When electrons from a heated cathode collide onto the anodes they become illuminated and visible. Vfd displays have been replaced by the new display technologies today but the quality of display a vfd gives is unbeatable.
A vacuum fluorescent display vfd is a display device once commonly used on consumer electronics equipment such as video cassette recorders car radios and microwave ovens.
Vfd segment controller driver example. A vfd operates on the principle of cathodoluminescence roughly similar to a cathode ray tube but operating at much lower voltages. You may find one in your car dvds radios casette players etc also there are may kinds of vfd display modules available. In my previous post i showed a simple vacuum fluorescent display filament driver built using a 555 timer and a custom hand wound center tapped toroidal pulse transformer and as promised in my earlier comment i am going to show you the remainder of the vfd driving circuit here.
