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Issacsutt
modified 7 years ago

Double Inverter Latch

5
38
186
01:32:34
An SR type latch, made from two inverters fed back into each other... can very easily be made with two npn transistors, and is much more stable and predictable then a PUT latch. Its been my experience breadboard-ing a PUT, that it can sometimes start up high, and then maybe low the next, and sometimes won't latch on permanently, (might toggle back after a few minutes), and it can be really sensitive, even with biasing resistors... this nice double inverter latch can really help eliminate those problems, and it's very simple, still requiring very few components; I've also breadboarded it using transistors, and it works flawlessly
published 7 years ago
hurz
7 years ago
Look, im the only one who tells you your mistakes. Any input is also an output of the previews stage, right? So apply a voltage to an output is a short. You need resistors to not burn the outputs!
kiani
7 years ago
If we replace the feedback links with an ameter there is a spike current of 1 A,, but if adding any size resistor in the f/b,, it won't work.
hurz
7 years ago
Really ??? http://everycircuit.com/circuit/5279578112393216
kiani
7 years ago
Why is it that it is difficult to see the right answer,, when it is always the easiest (simpler) route. .
kiani
7 years ago
Thnx. by the way,
Issacsutt
7 years ago
That makes sense. For simplicity sake, I'll leave it the way it is on the logic gate version, but I did include such current protection in my transistor version of that same circuit: http://everycircuit.com/circuit/4966989536952320 thanks for politely telling me my mistake
Issacsutt
7 years ago
Another thing to consider with it sharing the same input/output that I found is... if not careful, and dont buffer the input and/or output, too large of a load could possibly end up resetting it, (unintentionally acting as a current limiter by means of tripping it like a fuse or breaker kinda)
kiani
7 years ago
@ issac. Thnx. By the way for post,, usually end up with a few unused not gates, that is a good use for them.
Issacsutt
7 years ago
Sure thing, I thought it was pretty neat for how simple it was too, thanks
hurz
7 years ago
I hate the way you spend to much energy in obfuscating a little (for noobs a lot!!!!!!!!!!!!!!!) By turnunig everything 90° please no excuse I just hate it and you cant give me a good reason dont even try.
lenzrulz
7 years ago
Warner, you are a guest on this thread, please show respectful restraint, constructive critique is welcome but condescension is not.
Issacsutt
7 years ago
Hurz, what in the world are you talking about? I see nothing wrong with the way I talk. What could I have possibly said that was an excuse, or that was obfusicating?
kiani
7 years ago
If you are fron Turkmenistan ( Turkaman) is not turkey,,,,,,, if they visit each other in their house,,, the guest is welcomed by tea... Now the guest drinks the tea, and the hist will pour another, on and on,, if the guest doesn't drink the tea, he is bitten uo and thrown out.. They have good reasons for doing that, cause they both know what it means....!! now if you are forign in their country and visit sombody,, you are going to get bitten up, if you don't drink their tea,,,,, so the moral of the story is,,, learn what to do or say if you don't want any more tea. All you have ti do is ti turn your cup over so they can not oour you any more tea. . Now in another country is the other way arround, if you turn your cup over, you get bitten up cause that is a very rude gesture.. (like two fingers)... English say autralians are loud mouth (what ever that means), and Australians say english are inhabited.. .. there is a story if two lovers in middle east,, called ( leyly and majnun),,, "i" told the story to a very clise german friend,, my friend interpreted it in a new light by suggesting that both lovers were mentalky ill and had phsycosis... now who is right and who is wrong ¿¡ well (i say) everybody is right,,,
hurz
7 years ago
Moral of this story, any excuse will be wrong, cuz you did something wrong without knowing. In this case here @Issacsutt knows how stupid a 90° turned circuit is.
hurz
7 years ago
Or not stupid but ridiculous or not helpful just a show a useless show
lenzrulz
7 years ago
Warner, when will you address Issacsutt’s question rather than post your usual sarcastic rhetoric?
Issacsutt
7 years ago
So what... I'm drawing my circuits horizontal and that's wrong????
hurz
7 years ago
My little fraud Lenny, I decide when I answer question and I ask you and dont expect an answer as always, when have you ever helped another user here on everycircuit with a technical problem to solve? Link please so we can laugh. My lastest is this thread here. So I think I have some credit to be honest to @Issacsutt. How much credit you have to be a bullying asshole to me? None!
lenzrulz
7 years ago
I’ve helped encourage more users than you, how many times have you positively encouraged users such as @thebugger, @2ctiby, @Issacsutt...there are so many more, link please so that we can laugh? This thread absolutely proves just who is the bully my pompous egotistical little man...😬
hurz
7 years ago
You just proves you have no links and you are beside a fraud you are also (sure as fraud) a liar. Proof you are not with a "helpful" link that easy.
hurz
7 years ago
And you really missed that all three users I even encouraged not to frequent but more then you did in total since 4 years. YOU HAVE NEVER TECHNICALLY HELPED TO SOLVE AN ISSUE! Never, cuz you cant because of absense of knowledge and you cant because of your empatic mental issues you have.
lenzrulz
7 years ago
Where are your “helpful links” concerning @thebugger, @2ctiby and Issacsutt? There are others but let’s begin with these three.
hurz
7 years ago
Read this thread. @2ctiby I helped him to many times and he ignored to many times. @thebugger he self saud im helpful for him even we had and have big trouble. But all in all @thebugger has profit from me a lot. @Issacsutt go to his latest thread I helped him understanding its circuit,.I earned some credit to critisies his circuit as well. So were is your link were you help anybody to solve a technical issue? Nada, nothing you never helped anybody cuz you are less then a newbie you have even never started in electronic and you will never start. Cuz the only reason here is to provocate users like me with you bullshit fraudster show circuits. Im pretty sure thats the reason behind your sick person. Provocation and the discussion which follows are your motivation to he on EveryCircuit. It not electronic itself.
hurz
7 years ago
Stop turning everything upside down, face the simple fact: YOU HAVE NEVER TECHNICALLY HELPED TO SOLVE AN ISSUE!
lenzrulz
7 years ago
You’ve never helped anyone without sarcasm or obnoxiousness, and that was five years ago...😬
hurz
7 years ago
You never answer a question and just turn them against, and lying
hurz
7 years ago
Many users said "thank you hurz". This was for solving technical issues, real help. You never got a "thank you" for technical help, never! Your intensive R&D expiriences are a fake, you might be cleaning desks or cooking coffee. You are a fraudster
lenzrulz
7 years ago
Yes, many users have expressed their gratitude towards you - and then you turned on them calling them “bootlickers”. I have acknowledged the work of many users and offered encouragement to others, these are different forms of help, technical issues are another form of help, the community is diverse my friend...😎
hurz
7 years ago
If they behave like bootlickers they desrrve to be called bootlickers. The same is valid for frauds like you, my little fraudster.
hurz
7 years ago
And help can be positive AND negative critic, you never learned that leason in your life. Diversity in critic, my little fraudster.
jason9
7 years ago
Hey, this is exactly how Minecraft latches work, but only because Minecraft redstone physics makes all the inputs into a wire OR-gated into a single signal (if any part of the wire is turned on, the whole thing will turn on no matter what unless the maximum distance of 15 blocks is reached). If you wanna fix this latch so the input doesn’t fight with the output of the inverters replace the inverters with NOR-gates with one input the output of the other NOR-gate and the other input an input into the circuit.
hurz
7 years ago
Suppose to work with NORs or NANDs and is called RS Latch or RS inverted inputs latch, right thats what minecraft uses?
lenzrulz
7 years ago
I can work with constructive criticism but I resent condescension, big difference.
hurz
7 years ago
You haven't anything about my answer, you just ignore my effort and continue with the next songvfor the bear. Shut the fuck up, my little fraudster! You are the last one who can handel critic, cuz you are a narcistic personanilty, my little Lenny.
kiani
7 years ago
@giant.jason simetimes one ends up with a few unused not gates in the chips, and need an RS, so instead of adding a chip, use the not gates,,, specially if soace is limited,, just in case.. It's a giid good trick to have in a toolbox.
hurz
7 years ago
Nothing else then inverter you need to buils everything! But in case you have in your box some quad two input NORs I would prefer them even the CMOS version would also need two additional resistors as pullup or down! So TTL NOR or NAND is probably the least component solution! Open inputs are HIGH while switches/buttons are connected to ground.
lenzrulz
7 years ago
Enjoying dancing to my tunes you funny little bear?...😂
hurz
7 years ago
See how sick you are

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