Need help identifying value of this bad SMD cap.

[Spork Schivago]

Re: Need help identifying value of this bad SMD cap.

usually, people with medical problems that make them lose consciousness, e.g. epilepsy, diabetes, typically wear a medical bracelet explaining their condition and drug allergies. people with life threatening drug allergy reactions may also chose to wear a medical bracelet saying they are allergic to that drug. this is immensely useful for healthcare workers.

paramedics only look in people's wallets if there is a compelling medical reason to. (a wallet is a personal item and depending on the jurisdiction or country, there can be differing ideas about paramedics going through an unconscious person's wallet! it also depends on and if there are laws in the state empowering paramedics to search through a person's belongings for medical info.) e.g. they need to look for or know certain additional background info about the patient's medical history to remove doubt to avoid misassessment or if they need to administer medicine, they need to take reasonable measures to make sure the patient isnt allergic to what they are about to give!

"because the patient is unconscious or cant talk" is no longer recognised as an acceptable excuse if u trigger a drug allergy reaction in a patient and worse if the patient has a fatal allergic reaction, that can be seen as manslaughter by furious relatives. so they gotta "take reasonable measures" as a form of ass cover.

That's insane! I would want the paramedics to go through my shit to see if there's any clues to what's wrong with me and try whatever they can without fear of being prosecuted for trying to save my life. I know there's always a chance something can go wrong. But they're trained professionals and I'd think if something does go wrong, they'd have stuff to try and make it right. Does that Narcan counteract more than just opiates?

I thought it'd be nice to make a cell phone app or something that has all your medications on it, when they were filled, were they're filled at, medical history, doctors you see, surgeries, phone numbers for emergency contacts and doctor offices, etc on it. And then try to implement something where paramedics could check for the cell phone apps or something to see if they have that info. Maybe that could save some lives.

[ChaosLegionnaire]

Re: Need help identifying value of this bad SMD cap.

usually, people with medical problems that make them lose consciousness, e.g. epilepsy, diabetes, typically wear a medical bracelet explaining their condition and drug allergies. people with life threatening drug allergy reactions may also chose to wear a medical bracelet saying they are allergic to that drug. this is immensely useful for healthcare workers.

paramedics only look in people's wallets if there is a compelling medical reason to. (a wallet is a personal item and depending on the jurisdiction or country, there can be differing ideas about paramedics going through an unconscious person's wallet! it also depends on and if there are laws in the state empowering paramedics to search through a person's belongings for medical info.) e.g. they need to look for or know certain additional background info about the patient's medical history to remove doubt to avoid misassessment or if they need to administer medicine, they need to take reasonable measures to make sure the patient isnt allergic to what they are about to give!

"because the patient is unconscious or cant talk" is no longer recognised as an acceptable excuse if u trigger a drug allergy reaction in a patient and worse if the patient has a fatal allergic reaction, that can be seen as manslaughter by furious relatives. so they gotta "take reasonable measures" as a form of ass cover.

[Spork Schivago]

Re: Need help identifying value of this bad SMD cap.

yes its okay for heart attack patients. and yes, its generally a good practice to tell the paramedics and doctors what medicine if any, u gave to the patient or the patient himself took, before the paramedics got there or before he reached the hospital (if sending the patient to the hospital yourself without calling the ambulance).

I keep a piece of paper in my wallet that says stuff like, Hello! My name is Ken Swarthout. I live at 3591 College Avenue, Corning, NY 14830. My wife's name is Jessica Swarthout, her cell phone number is <blah>, her work number is <blah> and our house number is <blah>. If she cannot be reached, my parents number is <blah>. I am currently taking <list of medication, how much, how often a day> and <list of vitamins>. I sometimes have a problem with my sugar and when it gets really low, I get confused and don't know where I am! Usually something sweet fixes this though! I have <blah> for insurance. My insurance number is <blah>.

That way, if I ever get hurt and can't talk, they got it. I just wonder if people get hurt and they can't talk, do paramedics usually look in people's wallets?

[ChaosLegionnaire]

Re: Need help identifying value of this bad SMD cap.

yes its okay for heart attack patients. and yes, its generally a good practice to tell the paramedics and doctors what medicine if any, u gave to the patient or the patient himself took, before the paramedics got there or before he reached the hospital (if sending the patient to the hospital yourself without calling the ambulance).

[Spork Schivago]

Re: Need help identifying value of this bad SMD cap.

errr there are two types of stroke, transient ischemic attack (TIA) and haemorrhagic stroke. TIAs are from blood clots blocking off blood flow to a part of the brain while a haemorrhagic stroke is from bleeding in the brain tissue which can sometimes be caused by a ruptured aneurysm.

while blood thinners like aspirin and statin work in preventing both types of stroke; it thins the blood preventing clots from forming and decreases pressure in aneurysms preventing them from rupturing; but if the aneurysm ruptures anyway due to a violent blow like being beaten in the head or getting in a car accident, the thin blood will actually just worsen/accelerate the bleeding, killing u faster.

u also have no way of knowing if someone has a TIA or HS unless u have professional brain scanning equipment which most people wont have in their house. while the usa may have the good samaritan law, u must also be careful what medicine u give to a patient as medicine, if given wrongly becomes poison.

in the rare chance that it is a HS, giving blood thinners after the attack has occured will just worsen the bleeding. u also shouldnt give the patient anything unless u are a qualified paramedic and know what u are doing. giving the wrong medicine to the patient may interfere with and/or cancel out the effects of the doctor's medicine later on in the hospital, leaving the doctor scratching his head why his medicine doesnt work because u cancelled it out prior!

Yeah, I heard that they could be caused by a clot or by a rupture, like you explained. So for a stroke, just get them to the hospital as soon as possible. With heart attacks though, we're still supposed to give them Aspirin though, right? Because of its blood thinning properties...just make sure we tell the doctors that we gave it to them. Or should we not give them anything for that as well?

[stj]

Re: Need help identifying value of this bad SMD cap.

yes, but aspartic acid and statin's also screw with most medicin's - so it's a minefield anyway!

[ChaosLegionnaire]

Re: Need help identifying value of this bad SMD cap.

errr there are two types of stroke, transient ischemic attack (TIA) and haemorrhagic stroke. TIAs are from blood clots blocking off blood flow to a part of the brain while a haemorrhagic stroke is from bleeding in the brain tissue which can sometimes be caused by a ruptured aneurysm.

while blood thinners like aspirin and statin work in preventing both types of stroke; it thins the blood preventing clots from forming and decreases pressure in aneurysms preventing them from rupturing; but if the aneurysm ruptures anyway due to a violent blow like being beaten in the head or getting in a car accident, the thin blood will actually just worsen/accelerate the bleeding, killing u faster.

u also have no way of knowing if someone has a TIA or HS unless u have professional brain scanning equipment which most people wont have in their house. while the usa may have the good samaritan law, u must also be careful what medicine u give to a patient as medicine, if given wrongly becomes poison.

in the rare chance that it is a HS, giving blood thinners after the attack has occured will just worsen the bleeding. u also shouldnt give the patient anything unless u are a qualified paramedic and know what u are doing. giving the wrong medicine to the patient may interfere with and/or cancel out the effects of the doctor's medicine later on in the hospital, leaving the doctor scratching his head why his medicine doesnt work because u cancelled it out prior!

[stj]

Re: Need help identifying value of this bad SMD cap.

most strokes are from a blood-clot.
so a couple of 1000mg of aspirin is probably a good idea.

[Spork Schivago]

Re: Need help identifying value of this bad SMD cap.

Thanks ChaosLegionnaire. Someone recently told me the best thing you could do for someone having a stroke was to give them aspirin. I know this is true for heart attack victims but for stroke victims, I would think if the stroke was from an aneurysm, aspirin would make it worse. You see to know a lot about medical stuff. Do you think I'm right in thinking it'd be bad to give someone who had a stroke aspirin? Best to just call 911 or try to get them to the ER as soon as possible, right? The friend I know, he was airlifted and they flew over our house. We didn't know at the time that it was him flying over. He's still in the ICU.

[ChaosLegionnaire]

Re: Need help identifying value of this bad SMD cap.

It seems the earlier they catch it, the greater chance there is of the person surviving.

errr... to be precise, its the quicker the patient reaches the hospital for treatment, the better the chances that the brain damage from the stroke can be reversed.

its possible to suffer a paralysing/crippling very serious type of stroke that renders a patient into a near-vegetative state (but not in a cardiac arrest type of state) but if the patient is ventilated well with a liberal amount of 100% oxygen via a rebreather mask and he gets to the hospital in a couple of minutes, its possible for the brain damage from the stroke to be completely reversed and u'd be shocked to see the patient playing football upon release from the hospital!

just a word of basic first aid advice for dealing with a stroke patient: avoid crowding around a person who just had a stroke! it deprives him of valuable oxygen he needs to reduce brain damage from the stroke as much as possible until he reaches the hospital! if u see a crowd around a *suspected* stroke patient, disperse the crowd away asap!

just gonna be a terrible Christmas this year I guess. At least I'll still be able to see and be with both my parents for Christmas this year, that's a plus I guess.

well, all i can wish u this christmas and star wars season is merry christmas and may the health be with you.

[Spork Schivago]

Re: Need help identifying value of this bad SMD cap.

Thanks

[keeney123]

Re: Need help identifying value of this bad SMD cap.

Just do not let it overwhelm You. What I do is to take a break from it and do something different. Make sure you take care of yourself and treat yourself to things you enjoy a lot. That way you will have the strength to then take care of your love ones.

[Spork Schivago]

Re: Need help identifying value of this bad SMD cap.

I understand. Lots of medical problems at my end, too. Best wishes.

BTW here is my amended diagram:

          BAT+
 1.7V - 5.5V    ___       1.9V - 3.6V
  EEPROM     |         ___
  24AA32A     |          |     antenna
   4Kx8  .---------------.      |      \|/
   __  |        |   .-----------.    |
  -o| |o--|        |   | wireless |    |
  -o| |o--|   MCU    |   |transceiver|    |
  -o| |o--|        |-----|  U3   |-------'
  -o|__|o--|   DSP    |   | nRF24L01 |
   U2  |        |   '-----------'
      |   U1    |      |
.---------. |        |   Y1 _-_
| switches| '---------------'  16MHz |___|
|   _/ |  |  |  |  |       -    BAT+
| -o/ o-|  | _-_ |  |       |    +
|     |  | |___| |  | PWM1         |
|  LEDs |  |  -  |  |           |
|  -|<- |  |  |  |  |          L4 C|
|     |---'    |  |         1R8 C|
| scroll |   Y2  |  |   390R       C|
| wheel |  16MHz |  |   R29       |  D1
|     |      |  |   ___       +--->|---+---+---> Vcc1
| opto  |      |  | .--|___|--.     |    |  |
| sensor |      |  | |     |    |/     |  |
'---------'      |  '--|  ||  |-------| Q5   --- --- C34
           |   '----||---'    |>    --- ---
           |      ||       |  C33 |  |
           |             |    |  |
           |     C38       +--------+---'
           |             |
           |             ===
           |             BAT-
           |
           | Q5/Q6 = NSS40201LT1G
           |
           |             BAT+
           |             +
           |             |
           |PWM2           |
           |            L5 C|
           |           100 C|
           |     800R      C|
           |      R35      |  D2
           |      ___      +--->|---+---+---> Vcc2
           |    .--|___|--.    |    |  |
           |    |     |   |/     |  |
           '-------|  ||  |------| Q6   --- --- C41
               '----||---'   |>    --- ---
                  ||      |  C40 |  |
                         |    |  |
                 C45      +--------+---'
                         |
                        ===
                        BAT-

I hope your medical problems get fixed. Hopefully it's nothing too serious.

[Spork Schivago]

Re: Need help identifying value of this bad SMD cap.

We bought a new mouse. I think I'm just going to write this Microsoft one off. I feel terrible about breaking it. I've started to work on writing code for a programmable interrupt controller. Learning about debouncing right now. Thanks for the help with everything though guys.

Also, my dad went to the doctors. My sister went with him and told the doctor of some of the trouble he's been having. The doctor said there's no test but it sounds like my father has dementia. Family friend in the hospital for a stroke, dad might have dementia, my mum's got chronic kidney disease, stage 3b...just gonna be a terrible Christmas this year I guess. At least I'll still be able to see and be with both my parents for Christmas this year, that's a plus I guess.

[keeney123]

Re: Need help identifying value of this bad SMD cap.

Sorry to hear about your friend.
When you come back to the mouse we will be here. Fzabkar has endless resources. I do not know where he gets all that info. BudM is just an all around great person to work with and me I will help you what I can.

[fzabkar]

Re: Need help identifying value of this bad SMD cap.

I understand. Lots of medical problems at my end, too. Best wishes.

BTW here is my amended diagram:

          BAT+
 1.7V - 5.5V    ___       1.9V - 3.6V
  EEPROM     |         ___
  24AA32A     |          |     antenna
   4Kx8  .---------------.      |      \|/
   __  |        |   .-----------.    |
  -o| |o--|        |   | wireless |    |
  -o| |o--|   MCU    |   |transceiver|    |
  -o| |o--|        |-----|  U3   |-------'
  -o|__|o--|   DSP    |   | nRF24L01 |
   U2  |        |   '-----------'
      |   U1    |      |
.---------. |        |   Y1 _-_
| switches| '---------------'  16MHz |___|
|   _/ |  |  |  |  |       -    BAT+
| -o/ o-|  | _-_ |  |       |    +
|     |  | |___| |  | PWM1         |
|  LEDs |  |  -  |  |           |
|  -|<- |  |  |  |  |          L4 C|
|     |---'    |  |         1R8 C|
| scroll |   Y2  |  |   390R       C|
| wheel |  16MHz |  |   R29       |  D1
|     |      |  |   ___       +--->|---+---+---> Vcc1
| opto  |      |  | .--|___|--.     |    |  |
| sensor |      |  | |     |    |/     |  |
'---------'      |  '--|  ||  |-------| Q5   --- --- C34
           |   '----||---'    |>    --- ---
           |      ||       |  C33 |  |
           |             |    |  |
           |     C38       +--------+---'
           |             |
           |             ===
           |             BAT-
           |
           | Q5/Q6 = NSS40201LT1G
           |
           |             BAT+
           |             +
           |             |
           |PWM2           |
           |            L5 C|
           |           100 C|
           |     800R      C|
           |      R35      |  D2
           |      ___      +--->|---+---+---> Vcc2
           |    .--|___|--.    |    |  |
           |    |     |   |/     |  |
           '-------|  ||  |------| Q6   --- --- C41
               '----||---'   |>    --- ---
                  ||      |  C40 |  |
                         |    |  |
                 C45      +--------+---'
                         |
                        ===
                        BAT-

[Spork Schivago]

Re: Need help identifying value of this bad SMD cap.

Thanks for the help. I'm going to have to put the mouse off for a little bit. A family friend had a stroke this morning. Gonna go with my father up to the hospital to visit him. Hopefully it's not too bad. His speech is messed up. We don't know if he has movements in all of his arms / legs yet or not. We got a phone call this morning from his neighbor saying an ambulance just took him to the hospital and it looks like he had a stroke. We don't know if he had it in the middle of the night when he was sleeping or if he just had it in the morning when he was awake. It seems the earlier they catch it, the greater chance there is of the person surviving.

[fzabkar]

Re: Need help identifying value of this bad SMD cap.

What's the Xtal? The crystal? If so, yes, I can read it. It says:
CMT-LLAZ1C.

Just FYI, the manufacturer appears to be Commutek.

http://www.commutek.com/?p=6&cat2=3&id=4&s=&lang=en
http://www.commutek.com/?p=6&cat2=3&id=6&s=&lang=en

The part number looks like a special run for Microsoft. The nRF24L01 datasheet specifies 16MHz.

[fzabkar]

Re: Need help identifying value of this bad SMD cap.

Sorry, I should have drawn Q5 and Q6 as NPN BJTs, not N-channel MOSFETs.

This part looks like it might be the one:

NSS40201LT1G / NSV40201LT1G, Onsemi, 40V, 2A, Low VCE(sat), NPN Transistor, marking VB, RDSon 44mohm, hfe = 370, SOT-23:
https://cdn.badcaps-static.com/pdfs/...eb830320fa.pdf

[keeney123]

Re: Need help identifying value of this bad SMD cap.

I keep on seeing the word biased. What does that mean? Google says this:

The operating point of a device, also known as bias point, quiescent point, or Q-point, is the point on the output characteristics that shows the DC collector–emitter voltage (Vce) and the collector current (Ic) with no input signal applied. The term is normally used in connection with devices such as transistors.

Is that the definition? If so, I think I'm even more confused by it than before!

I almost want to say I remember transistors could be used in multiple modes. Is that essentially what it's saying?

I found this:

Transistor Biasing is the process of setting a transistors DC operating voltage or current conditions to the correct level so that any AC input signal can be amplified correctly by the transistor

Forward bias means the negative and positive connections on a transistor are set up DC wise, 0.7 volts, to turn on. So say in a NPN transistor in a common base set up. Common base only means it is common to the input and output circuit. So in a NPN. The P is connected to the base and the N is connected to the Emitter. This would be the input circuit and to forward bias this junction a positive 0.7 volt DC needs to be applied to the base as respect to the emitter. Now this next part will not make since, but it is what one needs to turn on a transistor. Keep in mind the Emitter/ Base is forward biased. The Collector is the other N or negatively dope pole. Again remember this is a Common Base. The other part of a bi-polar transistor in a common base is the collector N and the base P junction. I order for the transistor to work this junction needs to be reversed biased. So a positive DC voltage needs to be put on the Collector N with respect to the Base P. The two conditions above are required to turn on a Bi-polar transistor. In a common base the base is said to be common to the input circuit, emitter/base and the base is common to the output circuit, base/collector.
The input circuit is forward biased and the output circuit is reversed biased. The potential between the emitter N and the collector N is what conducts the current through the transistor. The emitter will have both the base current and the collector current running through it. The base will only have the base current and the collector will only have the collector current. It is much easier to understand with pictures. Perhaps I will sit down with the paint program and draw one.