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.
yes, im sure,, as i simulated the filter using a software and it gave me the correct results!!
but as i said, it doesnt matter, as im getting a constant output regardless of input, even if there is no input,,, (i have the power supply connected to the op amp from the V+ pin tho)...
its my...
ok,, this might sound stupid, but i have the following situation,,,
i want to design a bandpass filter, and im using a general purpose op amp,
it looks just like the filter here
http://www.fulcrum.ru/Read/CDROMs/NS/OA-28.pdf#search='bandpass%20filter%20op%20amp'
the problem is when i power...
Re: About diode
clipping means that u limit the voltage swing of a signal.. i.e. u "clip" the voltage signal to reduce the peak.. and u can do that using diodes, u can search online for "diode clipping circuit" to see a circuit that does that,,
i dont know what a knee is ??
Re: DTMF question
i dont think i totally understand ur question,,, but see if these links help ..
**broken link removed**
**broken link removed**
https://www.sandman.com/digit.html
its just some products out there that uses DTMF to detect dialed phone numbers,
Hi,
i need to automatically push the telephone redial button, i searched and the best thing i found is a reed relay... any recomendations? i dont have much time and i was hoping to get some feed back from someone whos done that be4..
Re: DTMF question
well,
ty all,, but i dont have alot of time, (less than 2 weeks), ive decided to use the phone circuit that i have and simply push the redial button, the reason im doing that is i will need to work on recognizing the baby crying sound,,
wish me luckkkkkk
Re: DTMF question
Thank u all,
all ur replies are greatly appreciated and important :)
my application is a device u leave with baby-sitter and it calls u when the baby has been crying for a continous 3 minutes non-stop..
i might have more questions in the future :P i will try ur hints...
Hi,
im trying to do a project where it requires auto dialing, i.e. to dial a specific number when triggered to do so.
well, my teacher suggested i recorde the number (sound of numbers) i want to dial on a record/playback chip and play it when its time to call, but i dont know where to play...
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.
