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Electrician and electrical instructor here... That's not a rheostat, it's a potentiometer. A rheostat has 2 leads, a potentiometer has three. A potentiometer is used adjust and divide voltages, while a Rheostat is used to vary the amount of resistance in a circuit. Certainly, one can use a "pot" as a rheostat by not connecting the one of the outside leads, but it's still a pot.

sir why have you limited yourself upto only 32 videos and why your .com doesnot work

CONGRATULATIONS; IS THE BEST EXPLANATION TO DIFFERENT CURRENTS FLOW IN PNP-NPN TRANSISTORS.

real newbie here: what's making the DC motor turn in the 5th example?

The Ice =7V/ 470 Ω = 14,9mA. Usually we take 1/10 for Ib (basecurrent). So R2 = (UR2= 9V-2V-0,7V)/1,49mA= 4228 Ω (or 4K3) would be the best choise in my opinion to get the transistor fully saturated.

Can I also plug it into the socket with a plug and then plug it into the MB102 with the USB-C?

Appreciate you sharing this video as I haven’t used this type of P.S. in nearly a year. Especially enjoyed your demonstration at end of the video. De AA4SH

Good

Great video Thanks for sharing.

I recently purchased a miscellaneous pack of components, which included a breadboard and the board shown here. There were no instructions with the pack, and this video has shown me all I needed to know.

thank you for the info....

when i only press the B button it turns on but dark

How can I get 9V's out of this bad boy?

I like what you're doing here. Please feel encouraged to add more narration on the breadboard sections, for example why you used the resistors you did and why that affects where the current goes.

Thank you😂😭

I would like to see your calculations for Current in Base and Emitter. The Beta seems really high, or am I miscalculating?

Yes enjoyed a lot. Thank you for considering to start from simple

I've been interested in electronics for a while now, but just made my first LED circuit thanks to your video! Thank you!

Thank you very much. I needed to know how to power it and you have provided me the info :) have a good day

Interesting video. Too bad you used the AI voice.

Just a quick note to say thanks for taking the tine to do all these. Im not absolute beginner but still find your 'short' sessions useful

This breadboard power supply can supply very less current. If we draw higher current then the SMD resistors on the module gets heated up. You can check...

I did the same design but i used two resistors of the same ohm value but im confused why LED 1 is still brighter than LED 2?

Rad man! I'll have what I need to build robots in no time!

Thanks, just got mine this morning. Bent pins all over the place out of the box! I think customer services need a few photos tbh! Subscribed! 😎 It's a shame you don't use your own voice. Unless you don't speak English and use Google translate for your scripts. Or maybe you have problems with your voice? (I have no legs below the knee so I know how it is!) Keep safe mate 😀

14.7k resistance… did not work… I used 470 ohm

Thank you

this is dumb if the transistor is the switch then why do you need a mechanical switch to turn it on and off for

I have used the 555 for so many projects over the years. One project was a water sensor to turn my bilge pump in my sail boat. This was in 1994 water sensing bilge pumps where not on the market at the time. Rule came out with one in 1997. I used the trigger function on the 555 to sense the salt water and this turned on a power transistor that powered the pump. Simple and reliable. 😁🛫

This is cb configuration right ?

can you please hellp me, which kind of transistor you used

Why does it have to be 470 ohms not 350 ohms

HI. Can this thing power a 16 channel servo driver on one side and a nano on the other? Trying to find a way to power about 3 or 4 micro servers using the pca9685 which requires its own power supply and a nano which as you know needs its own also. Trying to make a project i can put together that can just be plugged in with one cord. Thank you.

My circuit isn’t working and I can’t figure out why

2:00 with this barrel jack, is the center positive or negative ?

I don’t understand the transistor…doesn’t the PIR already act as a switch like in the first circuit?

Great thank you

why you not put led in same switch vcc roll what main point of transis .on off should doing plug battery and unplug zzzz.

when I connect two leds on a breadboard they do turn on but very dim i am using a 470 resistor as in the video. Not sure what I am doing wrong

In the MB-102 schematics, the USB power line is connected after the 5V regulator (but before the 3.3V regulator). So when this module is powered from the USB port, all "5V" voltage pins have the actual USB voltage. In your example with a 9V battery connected to USB, the breadboard probably gets 9V.

You are using a physical switch, this does show the use of transistor as a switch as I am looking for transistor as a switch and your video.

Thanks. It would be very interesting a circuit about how to build a timer for this kind of sensor. Keeping the lights on for a certain amount of time like 2-5 minutes

If I add 10 LEDs, does that change the resistor?

Change biased voltage or variable ressistor or change PNP to npn or vice versa or ultrasound reset electrical routing...that is why it cost a bank to run big business maintenance cost

Great!!

Very helpful kindle book and video ,thanks.

I can make the circuit work with 2 LEDs, but when I try to add more none of them light up. I don't know what I'm doing wrong. I check and recheck to make sure my components are plugged into the right holes, I confirm the LEDs are working. Yet when I add more than 2 I get nothing. So frustrating.

what if I want the transistor to act as a switch for a different power source?

I cannot be the only one who discovered these great tutorials.

Why is one resistor larger than the other?