Hello everyone,
I'm currently working on a project, and I am having the following problem.
(see joint circuit image)
Ive set up these to similar circuits. One at the top using a push button and comparator LM339, the one at the bottom a simple push button. (no deboucing, I know, this is for now only a concept lab)
Using my CMOS probe/pen and Multimeter, here are the results I dont understand:
-=On the Bottom circuit, Working circuit without LM339=-
1) No Button pushed = 0V (low) at the CLK (4013).
2) So, normally, Flip-Flop not toggeling. Good.
3) Pressing the push button = 11.8V (hi) at the 4013 CLK input.
4) Flip-Flop Clock hit by 11.8v square wave = Toggleling Fine, all the time.
-=On the Top, Non-Working circuit with LM339=-
1) No Button pushed = 0V (low) at the Output of LM339 & 4013 CLK
2) So, normally, Flip-Flop not toggeling. Good.
3) Pressing the push button = 11.8V (hi) at the Output of LM339 & 4013 CLK
4) Flip-Flop Clock hit by 11.8v square wave = Not Flipping!
I tried replacing the 4013 with a Toggle Circuit made up with a 555, same issue.
I do believe the is something wrong with the LM339 output square wave, but I can't find why.
Thank to anyone who has suggestions.
Your help is welcome.
have a nie day!
I'm currently working on a project, and I am having the following problem.
(see joint circuit image)
Ive set up these to similar circuits. One at the top using a push button and comparator LM339, the one at the bottom a simple push button. (no deboucing, I know, this is for now only a concept lab)
Using my CMOS probe/pen and Multimeter, here are the results I dont understand:
-=On the Bottom circuit, Working circuit without LM339=-
1) No Button pushed = 0V (low) at the CLK (4013).
2) So, normally, Flip-Flop not toggeling. Good.
3) Pressing the push button = 11.8V (hi) at the 4013 CLK input.
4) Flip-Flop Clock hit by 11.8v square wave = Toggleling Fine, all the time.
-=On the Top, Non-Working circuit with LM339=-
1) No Button pushed = 0V (low) at the Output of LM339 & 4013 CLK
2) So, normally, Flip-Flop not toggeling. Good.
3) Pressing the push button = 11.8V (hi) at the Output of LM339 & 4013 CLK
4) Flip-Flop Clock hit by 11.8v square wave = Not Flipping!
I tried replacing the 4013 with a Toggle Circuit made up with a 555, same issue.
I do believe the is something wrong with the LM339 output square wave, but I can't find why.
Thank to anyone who has suggestions.
Your help is welcome.
have a nie day!
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