What is the importance of the upper resistor in this circuit

  • Thread starter Thread starter Syndy
  • Start date Start date
  • Tags Tags
    Circuit Resistor
AI Thread Summary
The upper resistor in the circuit plays a crucial role in determining the charging time of the capacitor. Increasing the resistance of this resistor decreases the current flow to the capacitor, resulting in a longer time delay for the capacitor to charge. This relationship is fundamental in RC circuits, where the time constant is affected by both resistance and capacitance. Understanding this concept is essential for effectively designing circuits with desired timing characteristics. Overall, the upper resistor significantly influences the circuit's performance regarding time delays.
Syndy
Messages
25
Reaction score
0
The book also says you can increase the time delay by increasing the resistance of the upper resistor , why, what does it do?

image.jpg

uploading images
 
Physics news on Phys.org
You need to study basic RC circuits. Think about this circuit with nothing but the upper resistor and the capacitor/switch pair (and a voltage applied across the two in series. What does this circuit do?
 
Syndy said:
The book also says you can increase the time delay by increasing the resistance of the upper resistor , why, what does it do?

increasing the value of the upper resistor ( the one currently marked 22k) decreases the current flow to the capacitor
and therefore the capacitor takes longer to charge up

Dave
 
  • Like
Likes Syndy
Ok the explanation is clear. Thank you very much.
 

Similar threads

B How a Secondary Resistor affects the Transformer Primary Side?
Replies
6
Views
19K
B Can a wire be called a resistor?
Replies
7
Views
6K
How is the slider connected to the switch?
Replies
6
Views
767
I Intrinsic impedance of a resistor
Replies
10
Views
9K
I Not sure what I can make into equivalent resistors
Replies
12
Views
2K
I Why Does No Current Flow Between C and D in This Circuit?
Replies
13
Views
2K
B Where Do Electrons Go When a Battery Loses Charge?
Replies
22
Views
6K
I Does current decrease inside a wire or does it increase it's velocity?
Replies
8
Views
2K
Variable resistor and thermistors?
Replies
1
Views
1K
Phase Current Sensing Circuit: Q&A
Replies
1
Views
1K

Hot Threads

Recent Insights

Back
Top