please help, is there something wrong in this circuit? i need to make it work for my project

[timmychangga]

 

[danadak]

What is it doing ? Or not doing ?


Regards, Dana.

 

[timmychangga]

What is it doing ? Or not doing ?


Regards, Dana.

it should be like this, i wanna try it on falstad but i dont know how i would start

 

[danadak]

Lots of training videos on youtube :

https://www.youtube.com/results?search_query=falstad+circuit+simulator

Regards, Dana.

 

[Tony Stewart]

put labels on pin #s on schematic

 

[Tony Stewart]

practise makes better

https://tinyurl.com/yskv5roq

 

[tumbleweed]

I'm always suspicious of circuits that show outputs directly driving LEDs with no current limiting.
That's usually a good indication that there's gonna be something else wrong/suspect.

 

[Nigel Goodwin]

I'm always suspicious of circuits that show outputs directly driving LEDs with no current limiting.
That's usually a good indication that there's gonna be something else wrong/suspect.

Unfortunately it looks like that's yet another circuit from a completely clueless website on the Internet, there's far too many of them out there.

 

[danadak]

I'm always suspicious of circuits that show outputs directly driving LEDs with no current limiting.
That's usually a good indication that there's gonna be something else wrong/suspect.

Do LEDs have R's in them ?

Resistor LED

Are you looking for a resistor LED for your application? Browse Kingbright’s selection of 3MM LED products to find the one that meets your specifications.

www.kingbrightusa.com

Regards, Dana.

 

[timmychangga]

how about this one?

 

[Tony Stewart]

Nothing from Engineer's Garage has impressed me yet. But you could run CMOS & Blue, green White LEDs using a 3.3V supply with low current from internal resistance. If the video used 5V, then he is relying on the internal resistance of high-voltage CMOS (4000 series) which is OK for a few LEDs.

 

[Tony Stewart]

Yet another Cost Reduction

https://tinyurl.com/2xxuf9ax

 

[timmychangga]

Yet another Cost Reduction

https://tinyurl.com/2xxuf9ax

can you also help me with this one? i think it is the same, thank you very much for helping you really saved me

 

[timmychangga]

can you also help me with this one? i think it is the same, thank you very much for helping you really saved me

 

[Tony Stewart]

I helped you enough. If you want to add an audio signal, go add it to my circuit.

 

[timmychangga]

I helped you enough. If you want to add an audio signal, go add it to my circuit.

thank you very much, ive tried and finished it!