AB YOUR ANSWER: "Understanding the Ratio Detector Circuit: Explanation and Tips

  • Thread starter Thread starter gabrigam66
  • Start date Start date
  • Tags Tags
    Detector Ratio
Click For Summary
SUMMARY

The discussion centers on a ratio detector circuit, specifically addressing the connection marked in green by the user. The expert clarifies that this connection represents two paths: one supplying the + voltage to capacitor C25, which modulates the signal for audio and Automatic Frequency Control (AFC), and the other providing collector current to transistor Q26 via the primary of a multi-winding transformer. This explanation highlights the dual functionality of the connection in the circuit's operation.

PREREQUISITES
  • Basic understanding of electronic circuits
  • Familiarity with capacitors, specifically C25 in ratio detector circuits
  • Knowledge of transistors, particularly Q26 in circuit applications
  • Understanding of transformers and their role in signal modulation
NEXT STEPS
  • Research the function of ratio detector circuits in audio applications
  • Learn about Automatic Frequency Control (AFC) mechanisms
  • Study the role of multi-winding transformers in electronic circuits
  • Explore the characteristics and applications of transistors in signal processing
USEFUL FOR

Electronics enthusiasts, circuit designers, and students studying signal processing who seek to deepen their understanding of ratio detector circuits and their components.

gabrigam66
Messages
2
Reaction score
1
TL;DR
Ratio Detector connection question
Hi,

I built the attached ratio detector circuit and it works but I can't understand the reason for the connection marked in green.

I need an explanation, please.

Thanks in advance.

GR
 

Attachments

  • ratiodetector.png
    ratiodetector.png
    25.7 KB · Views: 258
Engineering news on Phys.org
What you have marked is not one path, it's two paths. The horizontal line along the top is the circuit's + supply. It is taken to one end of C25, and the detector modulates it to form the audio and AFC signal. The + supply is also taken to the primary of the multi-winding transformer to supply the collector current for Q26.
 
  • Like
Likes jim mcnamara
thank for your Replay-

G.
 
  • Like
Likes berkeman

Thread 'uA709 op amp compensation'

Most likely this can only be answered by an "old timer". I am making measurements on an uA709 op amp (metal can). I would like to calculate the frequency rolloff curves (I can measure them). I assume the compensation is via the miller effect. To do the calculations I would need to know the gain of the transistors and the effective resistance seen at the compensation terminals, not including the values I put there. Anyone know those values?
View full post »

Similar threads

FM Ratio Detector is not working
  • · Replies 16 ·
Replies
16
Views
4K
Need help in understanding these circuits
  • · Replies 2 ·
Replies
2
Views
2K
Why Does Amplitude Not Matter in Positive Sequence Detector Circuits?
  • · Replies 1 ·
Replies
1
Views
2K
Connect parallel batteries with wrong poles
  • · Replies 17 ·
Replies
17
Views
3K
How to make an Electrical Diagram with added Steinmetz Circuit for a Delta 3 phase motor?
  • · Replies 0 ·
Replies
0
Views
2K
Building a Safe and Efficient Induction Heater Circuit: Tips and Tricks
  • · Replies 7 ·
Replies
7
Views
7K
How to understand power stage circuits with transistors (undergrad level)?
  • · Replies 4 ·
Replies
4
Views
2K
High voltage not reaching Detector
  • · Replies 15 ·
Replies
15
Views
2K
Solve Black Box Circuits w/ Switch & w/o Switch
  • · Replies 12 ·
Replies
12
Views
5K
Voltage Output in subtractor photocircuit
  • · Replies 1 ·
Replies
1
Views
2K