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Search: Posts Made By: ishaan3731
Forum: Homework Help 10-18-2012, 03:44 PM
Replies: 9
Views: 1,668
Posted By ishaan3731
Thank for suggestion....So if I increase the gain...

Thank for suggestion....So if I increase the gain of second inverting amplifier to 10 will that be enough because now the gain of mixer will get multiplied with 10.(if gain of ten from second inv op...
Forum: Homework Help 10-18-2012, 03:40 PM
Replies: 9
Views: 1,668
Posted By ishaan3731
I wanna ask something : in the schematic I have...

I wanna ask something : in the schematic I have attached before are the potentiometer and the 10k resistor attached after the capacitor are in series or parallel !!!!!! if they are in series they...
Forum: Homework Help 10-13-2012, 06:28 PM
Replies: 9
Views: 1,668
Posted By ishaan3731
To all those laughing out!!!!

This is just a schematic of the concept not the project as a whole...i very well know that op amps require dual supply henceforth i have used 7805 and 7905 to produce +5 and -5V supply(not shown in...
Forum: Homework Help 10-13-2012, 10:48 AM
Replies: 9
Views: 1,668
Posted By ishaan3731
Audio mixer using op amp

i made a audio mixer that mixes output from two mobile phone.... i used single channel from both mobiles as inputs to the summing amplifer.

The circuit does the mixing work but the output is too...
Forum: Homework Help 10-13-2012, 10:43 AM
Replies: 3
Views: 834
Posted By ishaan3731
Dats what i think of this:

actually its a bit confusing but as i have interpreted it :
1)I have to make a transmitter
2)i need to use a 5Vp-p time varying signal as modulating signal(i think it must be either PAM or PWM)...
Forum: Homework Help 10-09-2012, 03:10 AM
Replies: 3
Views: 834
Posted By ishaan3731
Analog communication design problem :Plz help

I have got a analog communication design problem ,which i am not able to interpret properly and cudnt understand from where to start!!!! plz help!!!

"Hardware Required: Bread board, general...
Forum: The Projects Forum 03-19-2012, 02:27 PM
Replies: 2
Views: 1,031
Posted By ishaan3731
i am using a rechargeable lead acid 6v 4.5 Ah...

i am using a rechargeable lead acid 6v 4.5 Ah battery by sunca and to see more specs chk this link out!!!!!

http://www.alibaba.com/product-gs/481721183/Rechargeable_Lead_Acid_Battery/showimage.html
Forum: The Projects Forum 03-19-2012, 11:40 AM
Replies: 2
Views: 1,031
Posted By ishaan3731
basic ups circuit model

i want to model a ups circuit...remeber its a model hence i wont be dealing with high voltages or currents.the circuit would be having two main circuits. one circuit would charge the battery while...
Forum: The Projects Forum 03-17-2012, 02:09 PM
Replies: 2
Views: 678
Posted By ishaan3731
2N176 pspice model

i have to make a circuit in multisim that involves the transistor 2n176. But the multisim or even orcad's database doesnt include 2N176. Can someone plz make me the model of 2n176.....

i have no...
Forum: The Projects Forum 03-17-2012, 01:45 PM
Replies: 6
Views: 1,494
Posted By ishaan3731
ok so thats it...i have to use a diode to prevent...

ok so thats it...i have to use a diode to prevent AC from the mains to charge it....it got the concept that diode will be in reverse bias when AC tries to charge it......... So battery wont supply...
Forum: The Projects Forum 03-17-2012, 04:07 AM
Replies: 6
Views: 1,494
Posted By ishaan3731
ohh sorry!!!!

u might be getting confused by the name inverter!!!!!!

Actually this circuit is connected to the supply from the mains that is 220V ac (50 hze ).......this supply is the stepped down by a...
Forum: General Electronics Chat 03-16-2012, 05:33 PM
Replies: 2
Views: 1,174
Posted By ishaan3731
hmmm u wount actually get individual book...

hmmm u wount actually get individual book explaining orcad only.... orcad will be included as an extra(supplementary) topic or chapter or u may say in computer based simulation exrcises in books of...
Forum: The Projects Forum 03-16-2012, 05:29 PM
Replies: 6
Views: 1,494
Posted By ishaan3731
inverter circuit

actually i want to model a simple home based inverter that will simply shift the supply from AC (supply from mains[220 V , 50 Hz]) to a supply from a DC battery rated 6V. I just want to light a small...
Forum: The Projects Forum 03-16-2012, 05:19 PM
Replies: 33
Views: 3,085
Posted By ishaan3731
THis is a circuit in which a motor is acivated...

THis is a circuit in which a motor is acivated evrytime u speak somethin in microphone.....u can replace the motor easily by 20 leds in common cathode mode!!!!!
...
Forum: The Projects Forum 03-16-2012, 05:16 PM
Replies: 4
Views: 1,349
Posted By ishaan3731
check out www.redcircuits.com for audio...

check out www.redcircuits.com for audio circuits.....they really have a nice collection worth giving a peek!!!!!!
Forum: The Projects Forum 03-16-2012, 05:15 PM
Replies: 9
Views: 5,782
Posted By ishaan3731
So u need a basic version of oscillator. OKie so...

So u need a basic version of oscillator. OKie so if u wanna try then go for any of these two circuits!!!!
...
Forum: The Projects Forum 03-16-2012, 05:12 PM
Replies: 16
Views: 2,514
Posted By ishaan3731
Ur circuit dosnt need much modification to create...

Ur circuit dosnt need much modification to create a block diagram out of it.......... remove resistors from the circuit , instead of showing four diffrent leds .....try make a led bar of four leds in...
Forum: The Projects Forum 03-16-2012, 05:07 PM
Replies: 5
Views: 800
Posted By ishaan3731
Its an application of embedded systems and might...

Its an application of embedded systems and might require knowledge of embeded programming(if ur making the program urself)........U might find such instruments in labs etc,
Just try if u get chance...
Forum: The Projects Forum 03-16-2012, 04:56 PM
Replies: 5
Views: 941
Posted By ishaan3731
please define the problem in a precise manner ie....

please define the problem in a precise manner ie. what kind of circuit you are using that supply for.... and other important information etc. It all depends from application to application ..........
Forum: The Projects Forum 03-16-2012, 04:51 PM
Replies: 2
Views: 810
Posted By ishaan3731
why dont u try new polycrystalline ferrites such...

why dont u try new polycrystalline ferrites such as Ni.3Zn.7Fe203 and many others!!!!!
Can i know what exact application u are using that transformer for( if u wanna share,no compulsions)???
Forum: The Projects Forum 03-16-2012, 04:47 PM
Replies: 12
Views: 1,912
Posted By ishaan3731
The voltage and resistor values ur talking of...

The voltage and resistor values ur talking of depends on the number of leds u will be using to display the text........ u can get the forward voltage to each led but the amount of current and...
Forum: The Projects Forum 03-12-2012, 07:33 PM
Replies: 28
Views: 2,059
Posted By ishaan3731
yaa ofcourse 8 ohm || 1000 will give an effective...

yaa ofcourse 8 ohm || 1000 will give an effective resistance lesser than 8ohm..about 7.8 ohm or so!!!!
Forum: The Projects Forum 03-12-2012, 07:23 PM
Replies: 28
Views: 2,059
Posted By ishaan3731
in h parameters when we make the Hybrid model of...

in h parameters when we make the Hybrid model of a normal transistor....
we take R'l = Rc || Rl ...... so R'l according to u is the effective resistance!!!!
Forum: The Projects Forum 03-12-2012, 06:46 PM
Replies: 28
Views: 2,059
Posted By ishaan3731
gotcha ......plz bare wid me ...i am...

gotcha ......plz bare wid me ...i am bginner...with little knowledge....i got this concpet clear now!!!!
Forum: The Projects Forum 03-12-2012, 06:44 PM
Replies: 28
Views: 2,059
Posted By ishaan3731
first of all RC=1000 wud be ok for ac anlysis but...

first of all RC=1000 wud be ok for ac anlysis but for Dc analysis RC=1000 wud not be a negotiable value.......

Rl=1000 ohm wud be perfect but i dont think for Dc analysis Rc shud be too high!!!!!
Showing results 1 to 25 of 43

 
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