Author Topic: What is this component?  (Read 2013 times)

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Offline TheGlassesGeek

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What is this component?
« on: May 21, 2015, 07:59:13 am »
I wass working on arduino and found this in a scematic. do any of you know what this is? I searched for it but I got no results.

 

Offline German_EE

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Re: What is this component?
« Reply #1 on: May 21, 2015, 08:13:44 am »
I'm guessing that it's an incorrectly drawn FET.
Should you find yourself in a chronically leaking boat, energy devoted to changing vessels is likely to be more productive than energy devoted to patching leaks.

Warren Buffett
 

Offline Warhawk

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Re: What is this component?
« Reply #2 on: May 21, 2015, 08:28:14 am »
This is P - MOS (FET). These simplified schematic symbols are usually used in microelectronics designs.

There is nothing wrong with it:
https://www.intersil.com/en/products/amplifiers-and-buffers/all-amplifiers/amplifiers/ICL7611.html

« Last Edit: May 21, 2015, 08:41:52 am by Warhawk »
 

Offline Warhawk

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Re: What is this component?
« Reply #3 on: May 21, 2015, 08:41:24 am »
The magic formula for google image search is "CMOS" design.
http://cmosedu.com/cmos1/bad_design/bad_design7/bad_design_7.htm

And why there is no marking for a source or drain ? Well, in theory FET structure is symmetric and will work both ways if you take care of substrate (body) bias.
http://www.circuitstoday.com/jfet-and-mosfet-comparison

Offline mcinque

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Re: What is this component?
« Reply #4 on: May 21, 2015, 11:35:33 am »
Why some would connect a DS18B20 with GND and VDD to ground? What I am missing?  :-//
I'm basically still a rookie and because of this, even with the best intentions, I often say bullshits
 

Offline Warhawk

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Re: What is this component?
« Reply #5 on: May 21, 2015, 11:47:07 am »
Why some would connect a DS18B20 with GND and VDD to ground? What I am missing?  :-//

You eagle eye !  :-+

Online PA0PBZ

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Re: What is this component?
« Reply #6 on: May 21, 2015, 11:56:57 am »
Why some would connect a DS18B20 with GND and VDD to ground? What I am missing?  :-//

VDD:          Optional VDD. VDD must be grounded for operation in parasite power mode.
Keyboard error: Press F1 to continue.
 

Offline mcinque

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Re: What is this component?
« Reply #7 on: May 21, 2015, 11:59:13 am »
hmm.. parasitic power mode, thank you!
I'm basically still a rookie and because of this, even with the best intentions, I often say bullshits
 


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