I have always been kind of confused about decibels. You have made it crystal clear. Thank you.
@shivankitss83963 жыл бұрын
🔮
@ALLABOUTELECTRONICS6 жыл бұрын
Time stamps for the different topics covered in the video: 0:56 Decibel (dB) in electronics 2:15 Representation of Power Gain in dB 6:26 Representation of Voltage Gain in dB 8:40 What is dBW, dBm, and dBV? 11:40 dBm to dBW and dBW to dBm conversion
@dhirajsavla78056 жыл бұрын
ALL ABOUT ELECTRONICS what.is watts power in music amplifier
@ALLABOUTELECTRONICS6 жыл бұрын
It is the unit of power measurement. Generally speaking, the amplifier with higher wattage produces a louder sound. (more amplification)
@greencoder15944 жыл бұрын
Thanks for pointing out the *contextual difference* of the decibel (voltage, amplitude, … vs power, watt, …). Mathematically speaking, the *equal sign is formally used this way though:* *Power:* A/B = 10W/1W = 10log(10W/1W)dB = 10log(10)dB = 10dB = 1B *Field:* A/B = 10V/1V = 20log(10V/1V)dB = 20log(10)dB = 20dB = 2B
@lolvivo87832 жыл бұрын
I used to think prefix deci in dB stood for the log to the base '10'. But it looks it stood for metric prefix, ie represent multiplier 10 scale, not the base. But if deci is removed how do you say B; is it 'bels'
@greencoder15942 жыл бұрын
@@lolvivo8783 Correct 1 B = "one bel"
@nurbiyaablat4060Ай бұрын
Super helpful. Now I know what exactly decibel is. For my class, teacher just start using decibel in the graph without explain what it actually is. Like only want us to memorize.
@@He.Who.Remains. power will remain the same, it will not depend on reference
@aruns_world Жыл бұрын
@@He.Who.Remains. P= -18.806 dB
@sibgha9855 жыл бұрын
Your video clear my concept about 20bd thanks a lot
@user-fe3lm1lb2q2 жыл бұрын
Спс бро .Я начинающий радиолюбитель и теперь я глубже буду изучать технику .
@vikasgupta-hl9sq Жыл бұрын
You Made it very simple for me
@ALLABOUTELECTRONICS6 жыл бұрын
Let me know your answer here: If P1= 10 dBm and P2=5dBm Then P1+P2 = ?? Is it 15 dBm or something else?
@amansinghbhadauria35746 жыл бұрын
Directly addition to nahi hoga. I have tried in 2 ways but don't know it is correct or not . Pls give solution.
@ALLABOUTELECTRONICS6 жыл бұрын
Yes, that is true. Direct addition nahi hoga. First you need to convert each power into mW or watt. And then you can add them. So, P1 in mW will be equal to 10 mW and P2 will be equal to 3.2 mW. So, P1 + P2= 13.2 mW And if we again convert it back into dBm then it would be equal to 11.2 dBm. I hope its clear to you.
@drishtyrani68076 жыл бұрын
sir plzz explain..i did'nt get it. how u get 3.2..plzz rpy
@ALLABOUTELECTRONICS6 жыл бұрын
convert 5dBm into mW. In mW, it will be equal to 10^(5/10). If you calculate, it will come out around 3.16 mW. Or roughly 3.2 mW. Rest of the procedure I have already mentioned in the earlier comment. I hope it will clear your doubt.
@drishtyrani68076 жыл бұрын
oh..thanks a lot sir
@muddassirghoorun43222 жыл бұрын
Great delivery!
@gangeshgunjan59534 жыл бұрын
Thank you so much sir....very easy and understandable explanation.
@sadafsakib1453 Жыл бұрын
too much helpful video, highly recomended
@ramakrishnauppala14974 жыл бұрын
it is very simple way to understand the concept. excellent
how did 3.16 came ? log 5 is 0.698 right, So 10*0.698 is 6.98
@KarthiMKM218 ай бұрын
@@karthikeyaprasadnapa8847 you should add that
@sharondsouza14082 жыл бұрын
Thanks for clearing the concept.
@andreanonali45574 жыл бұрын
Well explained. I have a question: What happens if I add dB value of a transmitter and a dbW value? Can they be added?
@ALLABOUTELECTRONICS4 жыл бұрын
If the reference is same, then they can be added. I mean if both represents the Power in dB then they can be added.
@andreanonali45574 жыл бұрын
@@ALLABOUTELECTRONICS ok thanks. I appreciate your work and the time you spend to help other people
@happyhayot Жыл бұрын
Perfectly clear, thanks!
@sugalimathrunaik52564 жыл бұрын
tq u sir for this vedio now i have cleared my doubt
@animalcare627810 ай бұрын
Great explanation
@shahidhameed59804 жыл бұрын
interesting....very informative.
@147bshuvanganadas74 жыл бұрын
excellent way u explain.....
@deepakdoer85072 жыл бұрын
You cleared my doubt why gain in synthesiser always show in negative
@simozy4475 Жыл бұрын
thank you so much for the explanation
@Zhexss6 жыл бұрын
Thanks, that was helpful.
@VADroidTS5553 жыл бұрын
Thank you. This is very helpful.
@dipubiswas85203 жыл бұрын
Very Well explained
@manishamanisha3186 жыл бұрын
Why in voltage gain log of power gain is multiplied by 10? From where this formula is derived?
@RimantasLiubertas4 жыл бұрын
"d" in dB stands for "deci", i.e. 1/10th. Log(A/B) gives you 1bel. For the decibel you need to multiply by 10.
@MRPerfect-zr6mv2 жыл бұрын
@@RimantasLiubertas ohk. But what about 20. Why 20 is used for voltage gain??
@umbertofreitas59182 жыл бұрын
@@MRPerfect-zr6mv Because P is proportinal to U^2 (voltage raised to 2). This "2" goes multiplying 10 (that comes from conversion of bells to decibels). 2.10 log (V(out)) (for 1V reference voltage).
@dipalikadam5760 Жыл бұрын
Very helpful video!
@PHOEBE_LOVELY5 жыл бұрын
well explained dude...
@umravsingh1158 Жыл бұрын
Good and nice explain
@bicboss44866 жыл бұрын
thanks soo much, good explanation
@amansinghbhadauria35746 жыл бұрын
Nice explained. Thanks alot.
@TheUltrasEnd4 жыл бұрын
excellent explanation
@dheerajkhanna76976 жыл бұрын
I'm in love with this channel!
@TechSouls-wn6jc5 жыл бұрын
excellent explanation...
@MYCOOLSUPPORT6 жыл бұрын
Very nice video.... Thank you please keep it up
@dotlinehub93293 жыл бұрын
Thanks
@Melody-hm4xy4 жыл бұрын
Thanks this is really useful
@palashmalakar28105 жыл бұрын
Thanks a lot sir 🙏
@biswasuna3643 Жыл бұрын
Thank you so much sir ❣️❣️😍😍😍
@alsongadizo16923 жыл бұрын
thanks and awesome work
@divyaparameswarip94103 жыл бұрын
Good
@shubhammittal49936 жыл бұрын
Please explain BJT, transistors...
@sciclepodcast41085 жыл бұрын
cool explanation sir
@drivesim26783 жыл бұрын
Nice
@roshinroy51294 жыл бұрын
Thank you very much!
@jackkabirpotpourricapture30626 жыл бұрын
conversion of negative dbm to milliwatt?
@muhammadqasimsardar15273 жыл бұрын
Thank you very much for Clearing concepts
@attamuhammad12295 жыл бұрын
good one.....
@vishvajeet70642 жыл бұрын
Thank you bro
@szabojozsef78736 жыл бұрын
Hello. I need explanation of what is dBm in RF communication. For example I have two RF Module. The Transmit Power is 14dBm.What dose this mean? After connection RSSI is -9 dBm.What dose this mean? Can you help me please?
@ALLABOUTELECTRONICS6 жыл бұрын
dBm is used to represent the power in milliwatt. 14dBm means the power is around 25mW. When the power is less than 1mW then in dBm it will be negative. -9dBm means power is approximately equal to 0.125 mW or 125 uW. For the calculation, you can use the equation given in the video. Direct conversion calculators are also available on the web. You can also use them. I hope it will help you.
@mohammedalkhalidi71472 жыл бұрын
Thanks. I didnt out find how to convert dB to dBV? Can you please explain?
@aravindanvenkatesh88363 жыл бұрын
Bro will you share the video of total harmonic distortion concept
@ManishKumar-vz2xm3 жыл бұрын
thanks a ton, buddy!!
@Eshaal13774 жыл бұрын
sir i want to ask one question why zero watt can not be chosen as zero decibel level?
@rajeshkavyaparmar62063 жыл бұрын
thank you so much!
@TrueNetworking4 жыл бұрын
if the input power is -3dBm which suffers a gain of -4dB on insertion . What will be the output power? And if the outpower is equally splitted into 4 branches. What will be the output power per branch in dBm? Please help.
@mnada724 жыл бұрын
My answer to question is 11.2 dBm
@phisitja014 жыл бұрын
Nice. Thank.
@premchanduvattikala97736 жыл бұрын
Could you please explain about dbi
@tasnimulislamtaseen5207 Жыл бұрын
Intro music madhosh kar deta hain😂
@amitahirwal10075 жыл бұрын
sir how to measure unknown power of microwave x band in dbm
@bihariallinone45094 жыл бұрын
Why are lower cut-off frequency and upper cut-off frequency called -3dB frequencies??? Sir please explain.
@ALLABOUTELECTRONICS4 жыл бұрын
Because at that frequency, the output voltage reduces to 0.707 of the maximum value. If you convert it into the dB then Vo / Vin is -3dB. That's why it's called -3dB frequency. I hope it will clear your doubt.
@dilakshankamalathasan60704 жыл бұрын
respectable sir please make video, that why are they using 3dB in many place. and how derive that 3db, as much as possible. really i couldn't understand that. thank you
@ALLABOUTELECTRONICS4 жыл бұрын
Please check my RC low pass filter. There I have explained. 3 dB frequency is where the power becomes half or the voltage is 0.707 times the input voltage.
@dilakshankamalathasan60704 жыл бұрын
@@ALLABOUTELECTRONICS thank you sir
@claudiomejia64295 жыл бұрын
I'm stupid I didn't understand nothing.
@-Rishikesh4 жыл бұрын
I don't understand why 20 for voltage and 10 for power P prop to v square So if v =10 Then log means p = 20 ? Please explain
It's regarding half power it should be -3db but according u r table it showing -6db , correct me if i m wrong....
@ALLABOUTELECTRONICS4 жыл бұрын
The table is for voltage. The voltage becomes 0.707 times the actual value at -3dB. For power, it becomes half at -3dB. The equation for power is Power (in dB) = 10 log (Power in Watt/ 1W). For voltage its Voltage (in dB) = 20 log (Voltage in Volt/ 1V)
@pksingh8234 жыл бұрын
@@ALLABOUTELECTRONICS got it thanks..
@pulasaniaswini42534 жыл бұрын
P1=10 dBm(gain) P2=7dbm (gain) Total=17 dBm sir plzz tell me it's correct or not
@vinaykumarkv58303 жыл бұрын
I think its
@umbertofreitas59182 жыл бұрын
@@vinaykumarkv5830 I also think it is the right answer. 10dBm ~ 10mW 5dBm (half of prior potence) = 10dBm - 3dBm = 7dBm Total potence in dBm is 10dBm + 7dBm = 17dBm Also ask you to say if this is correct. Thank you in advance!
@adnanmalik67032 жыл бұрын
Needs correction at 3:09
@priyansukushwaha51953 жыл бұрын
What about current
@jackkabirpotpourricapture30626 жыл бұрын
are we get direct mw from dbm?
@bickyou46965 жыл бұрын
mw = 10 ^ ( dBm / 10 )
@jackkabirpotpourricapture30626 жыл бұрын
13.16 mw
@prathumnar96356 жыл бұрын
sir, Why we are taking -3dB in LPF and HPF?
@ALLABOUTELECTRONICS6 жыл бұрын
Because at these points on the curve, the amplitude is 3dB less than the maximum value.
@prathumnar96356 жыл бұрын
thank you sir
@TruthWillSF4 жыл бұрын
p1,+p2= 10mw+3.162mw=13.162mw
@karthikeyaprasadnapa88479 ай бұрын
bro, how did 3.162 came ?
@TruthWillSF9 ай бұрын
@@karthikeyaprasadnapa8847 I forgot all these things. I don't know 😁
@krishnaprasad11655 жыл бұрын
i think so is that correct
@mdf12594 жыл бұрын
Can anyone explain about in this video 11.18 1000mw to dbw is 0dbw ? Also dBm to mw?
@ALLABOUTELECTRONICS4 жыл бұрын
1000 mW is 1W. 1W in dBW is 10 log (1W/ 1W) = 0 I hope it will clear your doubt.
@mdf12594 жыл бұрын
@@ALLABOUTELECTRONICS Thank you so much sir That convertion of dBm to mw?
@MRPerfect-zr6mv2 жыл бұрын
Why 20 is used for voltage gain????
@ALLABOUTELECTRONICS2 жыл бұрын
Power P = V^2 / R. So, when we replace P with V^2/ R then in the log, 2 will get multiplied with 10. And hence for voltage, there is a 20 in dB equation.
@Zer-us4wq4 жыл бұрын
Anyone got the answer for the last question?
@neatpolygons85005 жыл бұрын
B for? Begetables
@ManojKumar-cj7oj3 жыл бұрын
P=11.16dB
@bestofbest82134 жыл бұрын
Ans : 15 dbm
@babarmpa46535 жыл бұрын
Bai Jan urdu ya hindi mein btatay to behter hota
@ronaldhoefsmid94013 жыл бұрын
Remember to pronounce Watt and not Volt when you write Watt.
@mizanrahman5632 Жыл бұрын
P(dBm)= P1+P2= 11.1933 dBm
@mizanrahman5632 Жыл бұрын
not 10+5 = 15dBm
@dae3xt6 жыл бұрын
3.16mw
@FloofyTanker2 жыл бұрын
P = 15 dBm P = 15 - 30 = -15 dBW
@glowingfacestrust4 жыл бұрын
15 dBm
@venkatarajasekharpatina57955 жыл бұрын
45dBm
@krishnaprasad11655 жыл бұрын
13.162 is the answer
@brandsplanet43816 жыл бұрын
Please explain why cats are so lazy.
@rupalipatil1734 жыл бұрын
p1+p2=16.989
@anvitiu72784 жыл бұрын
How to write 100dB =_______kw
@ALLABOUTELECTRONICS4 жыл бұрын
dB = 10 log (P), for the power. For 100 dB the power is 10^10 W. Or 10^7 kW.
@nobitech72353 жыл бұрын
50dbm
@karthikvenkata64842 жыл бұрын
(10+10^0.5)milliwatts
@eng.abdurahmanmostafanasr29874 жыл бұрын
8:46
@abrarshafi67804 жыл бұрын
Sir i want to join ur whatsapp group
@MANOJKUMAR-ve9qx4 жыл бұрын
40db+50db=90db is not correct. In db u cant add directly..
@ALLABOUTELECTRONICS4 жыл бұрын
The thing is it's converted into dB so that the quantity can be added directly without involving any further complexity. If two quantities are in dB then they can be added directly.
@tariqislam93883 жыл бұрын
@@ALLABOUTELECTRONICS If two quantities are in dB then they can be added directly. Then why can't we simply add P1 and P2 to get P i.e. why is P=10+5=15 not true? Please explain.
@ekremfidan63113 жыл бұрын
@@tariqislam9388 hi, 40db+50db=90db is correct, because this is a system of two amplifiers in series and amplification can be represented as Pin * A1 * A2. P=10dBm + 5dBm =15dBm not true because we just want to make addition powers (not multiplication) (this is the key) to sum up, multiplication in normal scale is equivalent to addition in dB (LOGARİTHMİC) scale.
@tariqislam93883 жыл бұрын
@@ekremfidan6311 Hi. Thanks for your explanation. But I still do not understand this thing well. Apparently it seems easy but I think I have problem some where in the basics. Can you please tell what background knowledge should I have in order to understand this db, dbm etc thing. Thanks.