Flip flop inverter...

[cowasaki]

Is there a simple circuit that takes a pulse input (either ground or VCC) and causes a flip flop to flop and then the same input again to flop again ie no reset but still have Q and inverted Q outputs.  This would be for a button to invert the outputs (so hardware debounce would be helpful too) and having Q and inverted Q means you could attach to the relevant one in order to select the correct default condition.

[karkoon]

You can make a toggle switch using 555 timer and a few passive components.

A quick google should set you with many options of this design. If you need a quick reference here you go

http://www.buildcircuit.com/toggle-switch/

There was also a video by Dave to make a soft toggle switch using just transistors.




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[Benta]

Is there a simple circuit that takes a pulse input (either ground or VCC) and causes a flip flop to flop and then the same input again to flop again ie no reset but still have Q and inverted Q outputs.  This would be for a button to invert the outputs (so hardware debounce would be helpful too) and having Q and inverted Q means you could attach to the relevant one in order to select the correct default condition.

It's called a T-flipflop (for toggle) and is built using a JK-flipflop, eg, 4027.

[TomS_]

I think you can do the same with a 74HC74 which has a pair of D type flip flops in it.

Take the output of Q complement and feed it to the D input. Hook a debounced button up to the clock pin, tie reset and preset high, and I think thats about it.

[Benta]

Yeah, a D-flipflop will work as well like you describe it. I'm just used to JKs, as they are more versatile.