This forum is for people to post there PSN tags and do spec ops or online games together NO BOOSTING!
Topic by wizzywoo 9 years ago | last reply 9 years ago
Hey people im starting a wii clan for black ops and mw3 you can do almost anything. the only requirement is to be active my name on both is DOUBLE0MEXICAN (yes im mexican everone asks) black ops ally code: 2478-6346-3686 mw3 ally code: 2095-2297-2093 our clan name will be south part mexicans (spm) iv got friends from many different clans. i'v got a mic
Topic by jampie98 7 years ago
Hey everyone I was hoping someone here could help me with a problem in having. I've been tinkering with some op-amp circuits with the LM386N-1 namely the one I have pictured. I first assemble them on my prototyping station and they work well using the signal generator but when I connect them to a audio line from my computer nothing comes out the speaker I have tested the cable and speaker and they both work so I am at a loss as to what's not working. I would appreciate any help you guys can give me thanks
Topic by juggalo_assassin183 11 years ago | last reply 10 years ago
Hi- So, I made the circuit below to make sound-reactive blinky LEDs for a halloween costume (the round thing on the left is a condenser mic). I think I just got lucky that it worked, because I'm no genius when it comes to op-amp usage or design. Now I want to adapt it to control something else that needs a slightly higher voltage than the LEDs. Basically, I'd like the output to swing as high as V+ when the mic input is "loud" (a relative and possibly adjustable level). I've messed around with various resistor values as well as adding or removing resistors in places it seemed like it would help (according to the LM741 datasheet). All to no avail. Anyone out there who might know what to do? Again, I want the mic input to cause the output to go as hight as V+ (9V in this case) when it's loud, and be more or less at 0V when it's "quiet." Thanks in advance, _mykle
Topic by deadbilly 10 years ago | last reply 10 years ago
I'm making an instructable about this circuit, it's a heartbeat detector, it's supposed to beep when a heartbeat is detected. Something weird is going on with the comparator, first of all, the input signal to the comparator seems to get "stuck" at the level of the comparator, like it is an invisible barrier that doesn't allows the signal to cross it easily, this seems to happen with and without the buzzer. Secondly, the comparator "rings", it doesn't displays a clean square signal when the threshold is reached, instead, at the end of the square pulse "ringing" appears. Removing the buzzer or speaker solves the ringing problem. I tried replacing the buzzer by a 8 ohm speaker, but the problem persists. Then I tried changing the 1k resistor of the transistor by a 10k, but the problem is still the same. I don't know what could be causing this, bad design? A faulty chip? In the second picture it can be seen how the signal "bumps" an invisible barrier when reaches the comparator level, in the third the "ringing" can be seen, the fourth and last picture is how the (previous) comparator signal looks when the load is removed, the problem disappears. Thanks in advance,
Question by Victor805 3 years ago | last reply 3 years ago
Can anybody tell me exactly how to connect an 8 pin Lm 358 ic?, in other words EG : pin 1 = _+DCV IN pin 2 = _GROUND_ pin 3 = _-DCV OUT_ etc? .and while you are at it explain waht is inverting and non inverting inputs and outputs ?thanks
Question by nicobotha12345 9 years ago | last reply 9 years ago
I'm making a distotion pedel and radio shack has the LM741CN but not the LM741C op amp.
Question by Flaky_Jay's 9 years ago | last reply 8 years ago
I was wondering if anyone could explain how an op amp like the LM741 works. I don't mean I want to know what's going on inside it, but more along the lines of "how can it be wired up?" and "what could it be used for?"
Question by tylervitale 6 years ago | last reply 6 years ago
Hey everyone, I know it been a long, LONG, freakin time that I've been inactive. I have not posted any guns since the beginning of August 2012, but now I almost finished making a sniper concept. It is called the XPR 50, which is supposed to be a semi auto sniper featured in Call of Duty: Black Ops 2. This isn't a real gun now, and there aren't any pictures of it in real life. I made the sniper from the picture in the black ops 2 game, which is in a really bad angle, with some parts of the gun distorted. I worked my butt off to make this, and this will be the first knex gun based on black ops 2. I didn't make the mag and the scope yet, so DON'T MENTION ABOUT IT!!!!!!
Topic by CODawesome 6 years ago | last reply 6 years ago
Hello, If the input to the positive terminal of an op amp is 12V, the input to the negative terminal is 10V, and there is no supply voltage, the output voltage is 2V and the output current is 0. Correct? Now, what I don't understand is what happens to the output voltage and current if I connect a supply voltage of, for example, 15V. I know that the output voltage and current both increase, but I don't know the math behind it. Can someone explain this to me, please?
Question by frossiove 6 years ago | last reply 6 years ago
Hi, I've got an op-amp, the part number is OP07CP and I am trying to use it to amplify a voltage by around about 200 times. My set up is 6v going into a voltage divider with one resistor of 100ohm and a variable resistor of 10,000-50,000 ohm, so the output is 10mV-50mv. What I want to do is have the op-amp proportionally increase the voltage, so it goes to a voltage range of 1-5v, which an arduino can read. The power supply is 5v (from the arduino) and the powers both the voltage divider and the op-amp. For some reason, following the simple non-inverting op-amp configuration I just can't get it to work. Do I need a separate power source for the amp? I think it might have something to do with the fact that the amp's ground, input and negative are all just going to the arduino's ground. What can I do to fix it? If someone could help or even give me exact values and configurations of components that would be fantastic. I know that the amp and divider seem like a pointless complication if was just trying to measure the output of the variable resistor, but if you knew the greater extent of my project it would make more sense. Cheers
Question by makincoolstuff 5 years ago | last reply 3 years ago
Just to test it out, I hooked up a voltage follower with a LM741 Op-amp. But, when I measure the voltages, it doesn't work. When I have problems with such simple circuits, it makes me want to kick a small animal. Please, save the small animals, help me with my circuit. When I measure Vout, I expected something somewhere around 7-8 volts, but I'm actually getting 13-14 volts. I also tried changing the resistors in the voltage divider, but the output did not change. I'm getting my power from an unregulated 12v 1A wall transformer, but I measured it at around 15v unloaded. I replaced the chip once to rule out static electricity as the problem, and I got an output 0.1 volt higher. Any ideas?
Question by WerdnaN 6 years ago | last reply 6 years ago
Well... I'm making this battery charger cum level indicator, which should turn off the battery supply when its voltage drops below 10V. Im using an opamp as a comparator to do that. I have been scratching my head for 3 days but cant get this sorted. From what I have been experiencing for years, on an op amp if the potential on the in+ pin is higher than that on the in- pin, then the output pin goes high, else low. Right? Now in this particular case (and the first time in my life) the ic gives 4.xx Volts on the output pin when in+ is higher than in- and 11.xx volts when in- is higher. Vcc is 12V. Im bugged... I have attached the part of the Schematic that shows the IC and its connections. Please have a look. I haven't changed the IC yet, im doing that in a minute anyway. I'll mark this solved if the new IC does the trick. :)
Question by pro2xy 6 years ago | last reply 6 years ago
Personally, I like black Ops. I want to see what you think.
Question by DELETED_the vengeful aug 8 years ago | last reply 8 years ago
I need some people for my profile on wii black ops... I would prefer people with mics, it would be best to post your highest round on solo zombies, current level and prestige, and favorite weapons. My ally code will be on as of 6/9/11 meanwhile post yours!
Topic by mrelement 7 years ago
I antcall of duty black ops but i have a wii version that is bad to many glitches i want the pc verson but someone suggest this check your pc to see if this will work so will it run on my computer.
Question by werewolfhunter 7 years ago | last reply 7 years ago
Which is better overall, Black Ops or Modern Warfare 3? Which has better campaign? Which one can you play two player (one on one match)? Which is more fun on the Wii? Any info is appreciated!
Question by The Red Book of Westmarch 6 years ago | last reply 5 years ago
Im looking for people to play black ops with but i dont really like friending random people all that much... I would like every one to have a mic! ally code will be posted soon just dont have it right now so please give me yours thank you!
Question by mrelement 7 years ago | last reply 7 years ago
On May 1st 2012, The Call of Duty Black Ops II official trailer was revealed and has had some mixed opinions. Some people say it's too futuristic. Some people think it's going to be the best Call of Duty yet. Will it have zombies? How will the multiplayer be? Do you think it will be too futuristic or well worth the money and wait? Tell us your opinion in the comment section. We love to here from you. Follow the link to watch the trailer. = http://www.youtube.com/watch?v=x3tedlWs1XY
Topic by Drew99-KGB 6 years ago | last reply 6 years ago
I have a couple op amps collected over a couple years, and I am working on a design for a linear power supply, but have stability issues, and a "down to -V" common mode input voltage for op amps is a difficult parameter to find. Constraints: * Inputs must work down to as close to the negative supply rail as possible * needs to be stable when used in a feedback loop for a linear power supply design * low noise / offset / blah blah good good goodies?? Hopefully? I'm actively testing these in a basic comparator circuit to see how far I can get the inputs to the -vee (or ground) before the op amp stops working as intended.I have tested the LM324, LM386, UA1458TC, LM741, and a few of the LT one's. Only the first 2 work well on a single supply w/ the inputs near ground or Vee LM324; // slow LM224; // ditto, but in weird thicc package LM386; // slow LM741; // ancient relics of the past, not rail to rail by any means, sucks IMO. UA1458TC // ancient relics of the past, not rail to rail by any means, sucks IMO. LM318H; // it's in a fancy metal case :D TL072CP; // JFET inputs, limited output current and the output can't go below the noninverting input. TL2072AC; // ditto. OP37; // These things aren't even that fast and can't work at unity gain. OP27; // ditto LT1007; LT1167; LT1191; LT1363; CRAZY fast, 1000V/uS!!! Maybe too fast... LT1360; LT1112;
Question by -max- 2 years ago | last reply 2 years ago
I built this circuit a while ago but the only problem i have with it is that i have to use electronics like my iPod, laptop, or anything with a high volume output. So I started reading about op amps and hwo they "jack up the signal" and I stated wondering could I somehow integrate it into my circuit so that my audio input is higher therefore allowing me to use my cellphone, tablet, and e.t.c? Currently I have a LM324 Quad amp i know fr sure i wont need all those pin. I also have a tip31 and 2N3904 transistors.
Question by tramont 5 years ago | last reply 5 years ago
This is a forum for real COD players. For players who are looking for a new clan, new and just starting, and just players in general. I need the list following; A sniper A "silent person"* A man for SMG trust me this is VERY important A person who can run well which equals marathon pro or not with lightweight I would not mind a hacker but do not totally advertise yourself on my games just on here I however rather get stuff fairly until I get angry that I lost everything when I prestige :) USA clan is not for Untied States of America, it is "Unknown Soldiers Association" HOW TO PUT COLORS IN YOUR NAME: Shift button, then number 6 which is together ^ hooray! then you put a number such as ^2 that would be green PM me or comment PM is preferred Your favorite weapon it doesn't have to be what your combat record says, your Kill Death Ratio (this will not affect anything im just wanting to know) IT DOES NOT MATTER IF YOU ARE GOOD OR NOT I'M JUST LOOKING FOR 10 PEOPLE My ally code is 3974-2523-7244 this is my weekend account I am not able to access my everyday account on weekends sometimes I will post my daily ally code ASAP I will also try my hardest to keep you updated on ALL black ops news and call of duty. PS. Don't look stupid and say "why dont you get an Xbox or ps3?" because one i have both my ps3 is not good for connection I have no clue why, and two I dont want to pay for Xbox live. *Silent Person is to me a person with ninja pro and ghost pro, DOES NOT MATTER WHAT SECOND PERK IS Goodbye! happy shooting!
Topic by mrelement 7 years ago
Hello, I need to amplify a single mono audio input with two op amp or a single dual op amp and have two discrete outputs that can filtered at different frequencies and then those outputs have to be read with an arduino with two different analog inputs, is this possible? Thank you.
Question by dkoshkin 7 years ago | last reply 7 years ago
its a vbscript program. it uses sapi voice and u can type anything that you want in and your computer will use the source to speak it the best that it can. i want like an opening background song when u open the program.
Question by Bert99 7 years ago
Question by webby427 8 years ago | last reply 8 years ago
I'm making an op amp distortion pedal, but as I turn up the gain, its starts squealing just when the crunchiness starts sounding good! Is there any way I can stop the oscillation?
Question by 8bit 10 years ago | last reply 10 years ago
Question by chezeydoggz 8 years ago
Question by DELETED_the vengeful aug 8 years ago
Question by mberg 8 years ago | last reply 7 years ago
Hello again, I'm searching for good op amps. They don't have to be power op amps, but it would be nice if it also had some protection circuits like a current limiter. It needs to take at least 25V differential between the negative and positive supply voltage. It should be a chip with at least two op amps inside it. Are there any broken electrical items that have these inside? I know they are 'used a lot' but somehow I don't find them often. Greetings, Electorials
Question by DELETED_Electorials 7 years ago | last reply 7 years ago
Can some one tell me the parts i need to buy to make my ps2,wii and xbox 360 a timed arcade coin op machine and/or an instruction manual please,please help,any info would be great,ive been interested in it for years and searching internet for ages,i ask the company where i can get parts like a timer board but they NEVER helped me yet,otherwise i wouldnt be asking here,please help anybody,so i can begin the project soon
Question by JustinC318 5 months ago | last reply 5 months ago
I've been having trouble finding examples (on instructables or through google) of using a high-powered op-amp as a standalone amplifier, like the 2x10 watt or higher ones available at TI and such. Yeah, there's always the datasheet applications section, but those will only get you so far, there's always little electrical quirks and anomalies to account for that may not be obvious to me (as an undergraduate computer engineering major). If anyone could point me toward an article or two, or even better, an instructable, I'd be very grateful. Thanks. p.s. is that Epson ad crashing anyone else's firefox?
Topic by samurai1200 10 years ago | last reply 10 years ago
Hello , i have some question about op amp frequency response. i use non inverting like the scematic below.If i set R1=10kΩ , C1=220nF , R2=100Ω , C2=1uF . R1 and C1 will set low frequency response of opamp at 72Hz . R2 and C2 will set high frequency response of opamp at 1592Hz. But how much it affect the signal in dB ? and how its affect the signal if i set R2=100k ,C2=1n (gain~11)? Can you give me the formula please ? Thanks very much! Sorry for my bad English!
Question by login721 6 years ago | last reply 6 years ago
Question by unanonymous 8 years ago | last reply 8 years ago
Question by Yashknowsbetter 10 years ago | last reply 10 years ago
I would like to build a low voltage op-amp circuit for an analog computer. Can it be done ? I would like to use tubes in the 12 volt range. The idea is to construct an analog computer like the Heathkit EC-1, but using low voltage tubes for the op-amps. The EC-1 is very expensive, and hard to find on Ebay etc. Any ideas? Thanking you in advance, Wayne Verish
Question by gort59.5 9 years ago | last reply 9 years ago
I just saw an i'ble about making a touch sensitive switch. The problem was that it used 3 transistors, and I wondered if there was any way to make one using only an OP Amp. Thanks.
Question by arhodes18 9 years ago | last reply 9 years ago
Question by Nr-Think different 7 years ago | last reply 7 years ago