Rectification characteristics of fast recovery diode

 

§01FR107 diode

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One 、 brief introduction

   Now I have just arrived FR107 Fast recovery diode ,  Its basic parameter is conduction current 1A,  Reverse withstand voltage 1000V.  Compared with ordinary diodes ,  Fast recovery diode is suitable for   Application of high frequency rectification .  Now let's test the characteristics of these diodes in high-frequency rectification .

  

Two 、 Measurement results

   First, build a test circuit on the bread board .  It is the signal source , Diodes and resistive loads are connected in series to form a sorting circuit .  Measure the voltage before and after the diode ,  Check the diode reverse process from on to off .  This is measured in 1000Hz Under the signal ,  Rectified signal . It can be seen that the diode reverse recovery time is very small .  Compare the , This is a MUR1100 Fast recovery diode rectification characteristics ,  This is a 1N5817 Schottky diode rectification characteristics .  It is obvious here that the reverse current is restored .

  

1、 Higher frequency

   This is the rectification result observed at higher frequencies .  The signal frequency is 10kHz, Diode reverse cut-off time is very short .  The signal frequency is 100kHz, The diode reverse recovery time is obvious .  You can see the waveform of the reverse recovery current .  You can see that the reverse recovery time is about 3 subtle .  From this, we can get FR107 The working frequency can reach hundreds kHz.

  
 

※ measuring Test results ※

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   benefit Tested with actual circuit FR107 Rectification effect of fast recovery diode under high frequency voltage . Verified its excellent fast recovery characteristics .

  

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