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Looking for a ClassD amplifier for transformer application

Question asked by Md Mubdiul Hasan on Sep 22, 2019
Latest reply on Sep 24, 2019 by Md Mubdiul Hasan
My intention is to make an 3-phase power calibrator !

 

Similar to this link, https://us.flukecal.com/products/ele...wer-calibrator

My current design might be class AB type. 


I am not worried to much about PWM generation ruther I am thinking how can I move class AB to Class D amplification.


A lot of the design effort relates to maintaining linearity and avoiding crossover distortion.


2  amplifiers( current, voltage)  output will feed to CT and PT! 

 

 

 

REQUIRMENTS :


1. The amp input  should be  plus and minus 7volt AC, 45-65Hz( 1 Hz has been converted to 1024)

2. Amp operating voltage should be more or less 24v.


3. 2 channel signal (not sure PWM) should be use , one for current, one for voltage.


4. Can run current transformer(input 16.5 V/1.5 A)  and potential Transformer (input15v/2A). PT output may be 15VAC.

 

5. If possible both voltage and current amplification is required in one IC.

 

6. Both positive and negative half signal should be amplify. 

 

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