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Flip flop? Answered

Hi,

I'm a little rusty in digital electronics, does the attached diagram represent a flip flop? I need a logical circuit that change state (output: from 0 to 1 and vise versa) when triggered (pulse). An I.C. number would be more helpful.

Thanks!

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Toga_Dan

4 years ago

relay logic. thats one approach, anyway. What voltage? Amps? How critical is switching speed? You could even just put a solonoid on a --- whats the term... (click on click off button.)

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Control80Toga_Dan

Reply 4 years ago

Hi, thanks for the answer, the logical part will be TTL so 5V, the current will not be an issue because this circuit is a part of a bigger one with all the necessary drivers for the actuators. The idea is that I want to activate an actuator when I interrupt a laser beam, then deactivate it by another interruption. It's important that it is activated on the positive edge of the signal, in the drawing shown below -the one with the hand- when I put my hand there the actuator should start (light, solenoid, sound, etc.) and nothing happens when I remove my hand, the actuator will stop when I place my hand there again, and so on.

I'll try the T flip flop, I apreciate any other suggestion.

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verence

4 years ago

It's a T-flip-flop (T for toggle). An IC? What technology? TTL, CMOS? For TTL, I don't know an integrated T flipflop, but you can use a JK-flipflop (74xxx76) or D-flipflop (74xxx74) and add the feedback yourself.

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Control80verence

Reply 4 years ago

Thank you!

So, if the T flip flop input (J & K) comes from a comparator (fed by a sensor signal), the output (Q) will change state on the positive edge of that input? Or should it be fed to the clock? Bare with me please!

t flip.png
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verenceControl80

Reply 4 years ago

To the clock input. Keep T (or J and K) high. See here.

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Control80verence

Reply 4 years ago

Thanks a lot, and sorry for the "bare" mistake :)) I just saw it now.