Rotary Encoder Interface to Counter

425

05:41:31

optical rotary encoders have two photodetectors next to each other to detect the direction of the encoder wheel as well as the pulse count.  one detector will sink current slightly before the other, depending on direction.  

an rs flip flop gets signals from both detectors.  the and gate provides the clock.  the two nand gates then direct the clock to either up or down inputs on the counter depending on which detector was first. 

published 10 years ago

flowDAQ

10 years ago

Good example. I think there is something glitching in EC with the pulse delay, I see it in my boost and buck examples also. For this circuit if I set the top pulse near 34.6% delay then start the sim it counts for a while then stops, on my converter simulations I can actually see the ramps change shape (they are offset with a pulse delay also).

faceblast

10 years ago

yeah it's the limitations of calculation

stanislav_maslovski

10 years ago

Nice example. Bookmarked.

add comment in editor

EveryCircuit is an easy to use, highly interactive circuit simulator and schematic capture tool. Real-time circuit simulation, interactivity, and dynamic visualization make it a must have application for professionals and academia. EveryCircuit user community has collaboratively created the largest searchable library of circuit designs. EveryCircuit app runs online in popular browsers and on mobile phones and tablets, enabling you to capture design ideas and learn electronics on the go.