AC DC Polarity Tester Circuit Using LEDs - Electronics

[@DrMasi]

Hey Organic Chemistry Tutor I really like your videos

[@DrMasi]

Good job

[@josepeixoto3384]

but what kind of LED is that,that can take 12 volts directly?

[@successthruknowledge]

A clever circuit construction! I wonder are there actual devices for sale such as this one?

[@MSSONGCHAU]

Don’t LED’s need a resistor in series with power?

[@Jayko30]

i may have requested it on an older video of yours but could you please make a video where you explain the halogen dance reaction mechanisms on heterocycles with lithium bases ?

[@Mursal-mohamed]

Thank you a lot
Can you speak to us about yourself?
How did you learn all of this beatifull things?

[@supriyaroy2738]

plz make number theory tutorials.

[@scienceteam9254]

i'm starting to think that we're no longer talking about organic chemistry...
i could be wrong though