J-K Flip flop DOESN'T work! advice plz

[kkokkogom]

Hi~

I made J-K flip-flop, but it doens't work properly

(I attached my schematic and results)


output of Q_b looks OK ,but Q is not right

Nand and Nand_3 works well.

I thought JK flip flop is quite easy though...


Please give me some advice






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[saro_k_82]

With this circuit you can only expect this. Q won't toggle and worse it can take a lot of glitch current. Design a better JK flop.

 

[kkokkogom]

With this circuit you can only expect this. Q won't toggle and worse it can take a lot of glitch current. Design a better JK flop.

Thank you
I googled website but I couldn't find 'better' one.
do you mean master-slave jk-flip flop?

 

[diemilio]

I've used this circuit and it works fine. Remember you need to latches for a Flip-flop to work properly (by "work properly" I mean that the output value changes only when you have rising edge or falling edge of clk)

**broken link removed**

Hope this helps,

diemilio

 

[kkokkogom]

Thank you~

 

[diemilio]

no problem