Digital Electronics - Flip-Flops - Discussion
Discussion Forum : Flip-Flops - General Questions (Q.No. 37)
37.
In a 555 timer, three 5 k
resistors provide a trigger level of ________.
resistors provide a trigger level of ________.Discussion:
4 comments Page 1 of 1.
Mona Sharma said:
8 years ago
Please explain anyone I cannot understand.
VARSHA said:
1 decade ago
Use votage divider R/3RVCC = 1/3VCC.
2R/3RVCC = 2/3VCC.
2R/3RVCC = 2/3VCC.
Gopi-009 said:
1 decade ago
The 555 timer IC is an amazingly simple yet versatile device. The IC is quiescent so long as the trigger input (pin 2) remains at +VCC.
The three resistors in the voltage divider all have the same value (5K in the bipolar).
This doesn't give us absolute values for "e" or "E," but it does give us the ratio e/E = 2/3.
The three resistors in the voltage divider all have the same value (5K in the bipolar).
This doesn't give us absolute values for "e" or "E," but it does give us the ratio e/E = 2/3.
Samreen said:
1 decade ago
Please explain?
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