Need help with 3-stage J-K flip-flop and 3-bit DAC


Joined Mar 10, 2019
Clue is the feedback R on the op amp. Notice each flip flop has different R values, and that affects the ratio with the feedback R. Eventually, after so many clock ticks, the op amp will "trigger" the OFF state when the op amp has the right value on the inverting input pin.


Joined Oct 2, 2009
I know this isn't a home work done for you platform but I don't know how to this. Just some pointers would be fine.

Here is a more appropriate title for your thread.

Need help with 3-stage J-K flip-flop and 3-bit DAC.


Joined Mar 14, 2008
Since that diagram does not appear to show any signals to the J, K, PRE or CLR inputs, the circuit operation is not clearly defined.
You'd have to assume that all those inputs are high for the circuit to work.