REFLEX KLYSTRON CHARACTERISTICS

 

Santhosh Kumar.S

APEC, Government Engineering College Thiruvananthapuram

 

 

1)      Aim To Plot Reflex Klystron characteristics

 

        To observe mode characteristics on the Cathode Ray Oscilloscope

        

                                    Set The Microwave bench as shown in  Fig.1 With Modulation switch of Klystron power Supply in FM mode

 

                                   Set beam voltage to 235V.

                                    Vary repeller voltage and observe mode characteristics on CRO

                          

                            

                  

 

Fig.1

 

To Plot Repeller voltage Vs output current and Repeller voltage Vs Output Frequency

 

Set the bench as shown in Fig.2

Fig.2

 

Set beam voltage 250V

Set repeller voltage 0

Set Modulation AM in Klystron supply

Typical reading are shown below.

 

Mode

Repeller Voltage

 Output Current

(mA)

Frequency

In GHZ

Mode 1

35

50

9.42

38

100

9.43

40

60

9.44

Mode 2

65

100

9.4

70

200

9.435

75

100

9.5

Mode 2

95

100

9.3

100

450

9.444

110

100

9.6

 

Plot  Output Current Vs Repeller Voltage and Frequency Vs  Repeller Voltage