„Capacitors” változatai közötti eltérés
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== Tri-stating == | == Tri-stating == | ||
{{#ev:youtube|1VacYW69NMA}} | |||
<br> | <br> | ||
1:05 <br /> | |||
1:05 | when you set a pin to '''input''', you want that to be a '''very high resistance''', right? What's the input impedance of an amplifier? | ||
when you set a pin to input, | |||
you want that to be a very high resistance, right? What's the input impedance of an amplifier? | |||
PROFESSOR 2: Very high. | PROFESSOR 2: Very high. | ||
<br /> | |||
1:16 | 1:16 | ||
If you set it as an output mode, then you're driving-- what you then be looking at, really? | If you set it as an '''output mode''', then you're driving-- what you then be looking at, really? | ||
PROFESSOR 2: Very low resistance. | PROFESSOR 2: '''Very low resistance.''' | ||
<br /> | |||
1:32 PROFESSOR 2: OK, so when we're actually setting the pins, in the code, | 1:32 PROFESSOR 2: OK, so when we're actually setting the pins, in the code, | ||
to be inputs or outputs, we're actually changing the impedance that's the pin. | to be inputs or outputs, we're actually changing the impedance that's the pin. | ||
<br /> | |||
1:46 Yeah, I was connecting the supply wire to the capacitor, | 1:46 Yeah, I was connecting the supply wire to the capacitor, | ||
pulling it off by hand. | pulling it off by hand. | ||
Pulling it off by hand is like putting a really high impedance there | Pulling it off by hand is like putting a really high impedance there | ||
between those. | between those. | ||
<br /> | |||
<gallery> | |||
EE40LX_01.png|Képaláírás1 | |||
EE40LX_02.png|Képaláírás2 | |||
EE40LX_03.png|Képaláírás1 | |||
EE40LX_04.png|Képaláírás2 | |||
</gallery> | |||
[https://courses.edx.org/courses/course-v1:BerkeleyX+EE40LX+2T2015/courseware/2c7d2b788bc34067875d416e54c53949/65f13e44250b4b49a559872cb56d8cae/ BerkeleyX+EE40LX+2T2015/] | [https://courses.edx.org/courses/course-v1:BerkeleyX+EE40LX+2T2015/courseware/2c7d2b788bc34067875d416e54c53949/65f13e44250b4b49a559872cb56d8cae/ BerkeleyX+EE40LX+2T2015/] | ||
A lap jelenlegi, 2022. június 15., 21:15-kori változata
Kondenzátorok
Tri-stating
{{#ev:youtube|1VacYW69NMA}}
1:05
when you set a pin to input, you want that to be a very high resistance, right? What's the input impedance of an amplifier?
PROFESSOR 2: Very high.
1:16 If you set it as an output mode, then you're driving-- what you then be looking at, really? PROFESSOR 2: Very low resistance.
1:32 PROFESSOR 2: OK, so when we're actually setting the pins, in the code,
to be inputs or outputs, we're actually changing the impedance that's the pin.
1:46 Yeah, I was connecting the supply wire to the capacitor,
pulling it off by hand.
Pulling it off by hand is like putting a really high impedance there
between those.
Képaláírás1
Képaláírás2
Képaláírás1
Képaláírás2
