please, In voltage divider video; you say that if we powered a motor of 50 ohms 100mA from 5V, the voltage will drop down to half (0.51) volt? I can't figure it out.
Can you please explaim me that, and give me the equation of that dropped voltage.
thank you for explaining this in such a way that i can grasp what i am attempting. i work in an electronics shop, but i am just now taking time aside with my boss to understand exactly what i am doing. i plan on building guitar effects pedals and eventually tube amplifiers. keep up the good work. thanks again.
This is incredible! Thanks for all the help, huge fan of your channel. I'm a EE by education and trade, but fresh out of school and messing around outside of work to expand my knowledge.
on the four equal value resistor, how do you do the equation to calculate the 0.75 volts? I can get the 0.5 and the 0.25 but cant never get the calculation for the 0.75volts out. and thats all to GND or across the resistor?
@fabiuh991 Oh you misunderstood - with AC on the input of the divider you will get AC out. With DC in you get DC out. You first want to convert AC to DC so look at my transformer and diode tutorials.
Glad you made this - I forgot my most basic electronic skills, and can now use that 0-100v meter to measure my 1000v capacitor bank, using a 9meg and 1 meg resistor :)
I find it difficult understanding what resistors to use to give a certain voltage,. So are you saying a 1M resistor will knock 1v off the supply voltage? so if it was 5v a 1M resistor would give you four? Is it really that simple?
I have a really great review of voltage divider concepts at my website at engineersphere (.com) it is great for those of you who need to revisit the basics. Check it out! Plenty of examples and we make it easy to understand
@Shekinahguild if you still haven't found your answers send me a message and i'll link you up to some docs, which present in a simple way the equations needed for common emitter, common collector and common base configurations of a transistor. using those you can easily build a class A amplifier. i calculated and built a headphone amp and it sounds great.
of course, class A draws lots of power so you'll want to progress to more efficient design, but it's a good start.
@OCDADVENTURES101 Get better at algebra then you will easily be able to use the formulas I gave in the video to calculate the resistor values. For more current, build a circuit based on an LM317.
Thanks for the great job
please, In voltage divider video; you say that if we powered a motor of 50 ohms 100mA from 5V, the voltage will drop down to half (0.51) volt? I can't figure it out.
Can you please explaim me that, and give me the equation of that dropped voltage.
Thanks
SuperSimonBel 1 month ago
thank you for explaining this in such a way that i can grasp what i am attempting. i work in an electronics shop, but i am just now taking time aside with my boss to understand exactly what i am doing. i plan on building guitar effects pedals and eventually tube amplifiers. keep up the good work. thanks again.
colourfulmountain 1 month ago
thats exactly what i searching for a long time. thank you.
RUSGrus 2 months ago
nice work, but you should explain it more slowly, overall too fast!
bluebird1422 3 months ago
@bluebird1422 using the pause good old paper and a pencil would be a good start
MrShnazer 1 month ago
This is incredible! Thanks for all the help, huge fan of your channel. I'm a EE by education and trade, but fresh out of school and messing around outside of work to expand my knowledge.
DoubtingThomas12 4 months ago
The cat again, cool
udiweizman 5 months ago in playlist More videos from Afrotechmods
Hello,
on the four equal value resistor, how do you do the equation to calculate the 0.75 volts? I can get the 0.5 and the 0.25 but cant never get the calculation for the 0.75volts out. and thats all to GND or across the resistor?
lolopli1 7 months ago
Brilliant!! But i dont understand how can the resistors take AC to power a micro controller.. 0:55
i'm trying to moddify a circuit that uses the following configuration at some point.. (~250Vac > 510k > IC > dc 100k)
Thanks..
fabiuh991 8 months ago
@fabiuh991 Oh you misunderstood - with AC on the input of the divider you will get AC out. With DC in you get DC out. You first want to convert AC to DC so look at my transformer and diode tutorials.
Afrotechmods 5 months ago
Talented Teacher great Job!
virgogreg 8 months ago
congratulation thankiu are you good people . my thecher show me wron way .
perazaroberto2 8 months ago
Glad you made this - I forgot my most basic electronic skills, and can now use that 0-100v meter to measure my 1000v capacitor bank, using a 9meg and 1 meg resistor :)
dash8brj 9 months ago
I find it difficult understanding what resistors to use to give a certain voltage,. So are you saying a 1M resistor will knock 1v off the supply voltage? so if it was 5v a 1M resistor would give you four? Is it really that simple?
haz939 10 months ago
great videos!
fishstick0071 10 months ago
Super-great video! Very clear and informative! (I'm happy the burning resistors didn't melt the white board.)
madamerotten 1 year ago
where can i salvage a LM317?
plavins1 1 year ago
i like the line 3:46
ramgueta 1 year ago
I have a really great review of voltage divider concepts at my website at engineersphere (.com) it is great for those of you who need to revisit the basics. Check it out! Plenty of examples and we make it easy to understand
jschuler16 1 year ago
lol 2:01 , anyway, how did you do that, i mean how much current did u supply and how many volts ?
samanthms123 1 year ago
thank you,please make more videos
alitou001 2 years ago 5
Can't get any better than this. Excellent work my friend.
nuengi 2 years ago 22
yes EXACTLY like a calculator lol
très bon
dropdeadsed 2 years ago 5
excellent tutorial^^
IncoherentRussian 2 years ago 16
You open the way for me, more on 'properly driving a transistor!'. Glad to see fresh videos but more importantly educational.
Shekinahguild 2 years ago 3
@Shekinahguild if you still haven't found your answers send me a message and i'll link you up to some docs, which present in a simple way the equations needed for common emitter, common collector and common base configurations of a transistor. using those you can easily build a class A amplifier. i calculated and built a headphone amp and it sounds great.
of course, class A draws lots of power so you'll want to progress to more efficient design, but it's a good start.
uN1Qu3DZ 2 years ago
Gotta love the resistors on fire clip!
synthmonger 2 years ago 5
Please do one on op-amps--but how to add a tone control to a simple audio amplifier. Even small passive control. The basics of tone controls.
I like KipKay--but your stuff is brainier. Therefore better. I bought an oscilloscope because of you.
kc7fys 2 years ago 4
RC and LC filter tutorials are in the works.
Afrotechmods 2 years ago
@Afrotechmods may I ask how to drop 9 volts down to 2.2 volts?
OCDADVENTURES101 1 year ago
@OCDADVENTURES101 Get better at algebra then you will easily be able to use the formulas I gave in the video to calculate the resistor values. For more current, build a circuit based on an LM317.
Afrotechmods 1 year ago
is that YENKA ?
iulian28ti 2 years ago
This video is awesome, funny how you can learn so much in only 4 mins. please make more!!!
ramjam19 2 years ago 4
Superb tutorial!
Jim
reeseht 2 years ago 4
"This box looks exactly like a calculator" haha!
Forssa1 2 years ago 2