Why Do I Need So Many Resistors? Is It Possible to Reduce?

Click For Summary

Discussion Overview

The discussion centers around the necessity of multiple resistors in a circuit design, specifically regarding their roles and whether it is feasible to remove some to enhance signal strength without damaging other components. The conversation touches on circuit design principles and the function of non-trimming capacitors.

Discussion Character

  • Debate/contested, Technical explanation

Main Points Raised

  • One participant questions the possibility of removing resistors to strengthen the signal, seeking clarification on the implications of such changes.
  • Another participant emphasizes that each resistor serves a specific purpose within the circuit, suggesting that redesigning the circuit could be an option but that the current configuration is intentional.
  • A later reply draws an analogy to removing tires from a car, implying that removing components may compromise the overall functionality.
  • One participant notes that the first transistor and its associated resistors function as a pre-amplifier, indicating that omitting certain components could be attempted under specific conditions.

Areas of Agreement / Disagreement

Participants express differing views on the feasibility of removing resistors, with some arguing against it due to the designed purpose of each component, while others suggest that redesigning the circuit could be a possibility. The discussion remains unresolved regarding the specific implications of removing resistors.

Contextual Notes

Participants do not fully explore the technical details of the circuit design or the specific roles of the non-trimming capacitors, leaving some assumptions and dependencies on definitions unaddressed.

Le Luc
Messages
10
Reaction score
2
Hello. I wonder if I can take some of these resistors off and make the signal stronger without breaking the rest of the components. Is this possible?

Also why are the non-trimming capacitors needed?

I have a picture attached.

Thank you!
 

Attachments

  • Screen Shot 2017-04-27 at 4.19.24 PM.png
    Screen Shot 2017-04-27 at 4.19.24 PM.png
    27.7 KB · Views: 647
Last edited:
Engineering news on Phys.org
Each one of those resistors is doing a job. Do you know why they are there? You could in principle redesign the function so it doesn't need as many resistors, but given that schematic, they are there for a reason.

Would you ask if you could take off some of the tires of a car and still drive without breaking the rest of the components?
 
  • Like
Likes   Reactions: berkeman
Le Luc said:
Hello. I wonder if I can take some of these resistors off and make the signal stronger

analogdesign said:
Would you ask if you could take off some of the tires of a car and still drive without breaking the rest of the components?
Reminds me of one of my favorite quotes from the movie Amadeus.

 
  • Like
Likes   Reactions: sophiecentaur, DrClaude, davenn and 3 others
The first transistor and associated resistors make up the pre-amp, so if you decide to pound the microphone with sufficiently high volume, you can try omitting Q1 and it's bias resistances.
 

Similar threads

Why Do We Need an External Voltage in Photodiode Circuits?
  • · Replies 10 ·
Replies
10
Views
5K
Couple Questions about this Resistor Datasheet
  • · Replies 4 ·
Replies
4
Views
2K
I don't understand transistors in combinations .... Or maybe basics ....
  • · Replies 68 ·
3
Replies
68
Views
7K
Active LPF or Integrator w/feedback Resistor
  • · Replies 8 ·
Replies
8
Views
2K
Why do LEDs in a circuit need resistors in series?
  • · Replies 6 ·
Replies
6
Views
2K
Optimizing PMT Circuit: Resistor Values for Secondary Electron Detection in SEM
  • · Replies 2 ·
Replies
2
Views
2K
Why resistor between +input and ground necessary in OP-AMP?
  • · Replies 9 ·
Replies
9
Views
7K
Potentiometer values and ratings
  • · Replies 2 ·
Replies
2
Views
2K
Novice question about Relays, Capacitors, and Diodes
  • · Replies 5 ·
Replies
5
Views
5K
How Do I Connect an Oscillator, Capacitor, and Resistor on a Breadboard?
  • · Replies 2 ·
Replies
2
Views
2K