Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.
so there is no chance dvm displaying average rectified value? so lets say that what i had done is wrong?
and whether it is display in term of rms or not, it is depend on the load i suppose?
so the voltage that goes out from outlet terminal in our house is not in term of rms?
my data collection as stated above, when i compared to graph it close to average value. why not in rms?
is there another term or name for controlling ac voltage using thyristor? as i know there are phase...
hey guys, i done my small project. it is controller of ac fan using triac. i referred to this **broken link removed**
however, there are things that confuse me. so i done it by delaying tyristor firing at 3ms ( i got 188V), 4ms ( i got 154V), and 5ms (108.6V). i look for phase firing angle...
i interfaces my load as in picture. the main is rms right? but why i got rectified value instead of rms? i am wonder. because using pdf that u gave, 90 degree means 1/2 max voltage for average voltage, not rms. any help?
hey guys, i tried to delay tyristor using timer. i used to use delay(5);. delay(4);, and delay(3); it works, but my LCD that shows adc value is not shows it well. so i want to use timer for delay. my tmod is 0x10. my xtal is 11.0592MHz
but the problem is it seems the tyristor not delayed (thus...
hey guys, i tried to interface adc 0809 to 8051 (at89s52). adc 0809 needs external clock, like adc 0808.
from my reference to generate clock it can be done using timer interrupt. the clock is 500 KHz.
the code is like this:
TMOD=0x02;
TH0=0xFD;
IE=0x82;
TR0=1;
so tmod set to timer...
i think the result that i got and the pdf that i posted is different topic..
i found this picture in this forum
the graph said it is relation between power and delay. tahmid from edaboard said this graph can be used by assuming constant current. what would you say? im not so good with...
i think mine refer to Figure AN1003.6 right? cmiiw
why the less conducting angle in previous graph = more voltage? but the less conduction angle in pdf means lower voltage. ( i assume that in pdf, conduction angle is 180-delay angle)
which one should i refer by the way, rms or avg?
how can i...
so do you have any reference regrading to that result? maybe literature, graph, or the specific name of theory/method? i need it to be attached to my paper. you know, i cant just put forum as my reference in my scientific paper.
even the graph that i got is not mentioning any source. i got it...
in my data collection for particular delays:
3ms=188.84
4ms=154.08
5ms=108.66
for 5ms it is 50% duty cycle. is it mean for 4ms is 60% and 3ms is 70%?
because if it is linear, my data collection is terrible.
i had found this graph , but it is delay vs power.
by let the 3ms is 85%, 4ms is 70%...
hey tahmid, i got 108.5vac for my load if i assign 5ms delay before firing triac.
is it mean that i turn it on 50% on the first half, and 50% the other half? my main is 50Hz 220V.
because the formula on internet says for 90degree of delay it will have 155Vrms
mas budhy, i have phase firing angle circuit that would give 110vac if i applied 5ms delay. but from the graph, i will get 155vac. which one is true? is it suppose to be half power or half voltage?
i collect the average voltage after tested it 10 times each for particular delay(mS):
delay 5: 108.66
delay 4: 154.08
delay 3: 188.84
delay 0: 215.9
what would you say about these?
----------
updated:
i refer to this site...
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.
