5C9S

Kenotron 5C9S is intended for rectification of alternating voltage of industrial frequency.
It is used in rectifying devices of special and measuring equipment. Indirectly heated oxide cathode. Works in any position.

5 – a number indicating the rounded value of the tube filament voltage in volts

C – a letter that determines the type of tube: C – low-power kenotron

9 – the number of the serial number of the development of this type of tube

S – a letter characterizing the design.

Technical specifications:

• Heating voltage: 5V
• Variable effective voltage of the secondary winding of the transformer: 2 x 500V
• Resistance in the anode circuit: 2.kOhm
• Filter capacity: 4uF
• Glow current: 3A
• Rectified current: 190mA

Maximum allowable electrical values

• The highest heating voltage: 5.5V
• The lowest heating voltage: 4.5V
• The largest amplitude of the reverse voltage at the anode: 1700V
• Maximum anode current amplitude: 600mA
• The highest anode current at the moment of switching on: 3A
• Maximum rectified current: 205mA
• Maximum power dissipated on the anode: 12W

Service life not less than 500 hours.