Replacing an Audio Transformer: EI-19 Output Specs and Replacement Guide

In summary, the conversation revolves around replacing an Audio transformer, specifically an EI-19 Output Transformer. The speaker driving transformer is being used in an amplifier, but details such as the primary to secondary ratio, voltage ratings, and wattage are unknown. The speaker driving transformer may have a special purpose for audio compared to other transformers used in AC to DC converters. The possibility of rebuilding the transformer is also mentioned. According to Google, the EI-19 designation refers to the bobbin or coil size, but more information is needed about the transformer and the circuit it is being used in."
  • #1
chaoseverlasting
1,050
3
I need to replace an Audio transformer, EI-19 Output Transformer. What should I replace it with? I can't find the primary to secondary ratio, or the voltage ratings. Is there something special about audio transformers compared to step up/down transformers used in AC to DC converters? If so, what do I need to know to replace it?
 
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  • #2
What type of equipment is this in? An audio output transformer just about always is driving a speaker. An amplifier? If so, how many watts?
 
  • #3
Any chance you can rebuild it?
 
  • #4
From Google it looks like a EI-19 audio transformer just specifies the bobbin or coil size. What else do you know about it, or the circuit in which it is being used?
 

Related to Replacing an Audio Transformer: EI-19 Output Specs and Replacement Guide

1. What is an audio transformer?

An audio transformer is a device used to transfer energy between two or more circuits through electromagnetic induction. It is commonly used in audio equipment to step up or step down voltage levels, isolate circuits, and eliminate ground loops.

2. What are the specifications of an audio transformer?

The specifications of an audio transformer include its turns ratio, impedance, frequency response, insertion loss, and power handling capabilities. These specifications determine the performance and compatibility of the transformer in a specific audio system.

3. How do I choose the right audio transformer for my system?

The right audio transformer for your system depends on factors such as the input and output impedance requirements, desired frequency response, and power handling capabilities. It is important to carefully consider these factors and choose a transformer with the appropriate specifications for optimal performance.

4. What is the importance of turns ratio in an audio transformer?

The turns ratio of an audio transformer determines the voltage ratio between the primary and secondary windings. This is crucial for impedance matching and ensuring proper signal transfer between circuits. A higher turns ratio can also provide better isolation and reduce noise interference.

5. How do I test the performance of an audio transformer?

The performance of an audio transformer can be tested by measuring its frequency response, insertion loss, and impedance matching. These tests can be conducted using specialized equipment such as an audio signal generator and an oscilloscope. It is also important to test the transformer in the specific audio system it will be used in to ensure compatibility.

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