„Capacitors” változatai közötti eltérés
Ugrás a navigációhoz
Ugrás a kereséshez
Nincs szerkesztési összefoglaló |
Nincs szerkesztési összefoglaló |
||
| 12. sor: | 12. sor: | ||
1:05 | 1:05 | ||
when you set a pin to input, | when you set a pin to input, | ||
you want that to be a very high resistance, right? | 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. | |||
[https://courses.edx.org/courses/course-v1:BerkeleyX+EE40LX+2T2015/courseware/2c7d2b788bc34067875d416e54c53949/65f13e44250b4b49a559872cb56d8cae/ BerkeleyX+EE40LX+2T2015/] | |||
A lap 2017. március 12., 14:47-kori változata
Kondenzátorok
Tri-stating
<videoflash>1VacYW69NMA</videoflash>
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.