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R2
R2
R2
R1
R1
R1
R1
R3
R4
C2
C3
G2
G1
CATHODE
HEATER
SUPPLY
RESERVOIR
HEATER
SUPPLY
(VARIABLE)
7252
CATHODE (
7)
C1
150 V dc
SUPPLY
7150 V BIAS
TRIGGER
PULSE
R2
R1
R1
R1
R1
R2
ANODE (+)
SCHEMATIC DIAGRAM (Crowbar Service)
R1
=
470
O 12 W vitreous enamelled wirewound resistors.
R2
=10 to 25 M
O high voltage resistors with a power rating consistent with forward anode voltage.
R3
=
Grid 2 series resistor. 12 W vitreous enamelled wirewound is recommended, of an impedance to match the grid 2 drive
pulse circuit.
R4
=
Grid 1 series resistor. 12 W vitreous enamelled wirewound is recommended.
C1
=
500 to 1000 pF capacitor with a voltage rating
530 kV.
C2,C3 =
Reservoir protection capacitors with a voltage rating
5500 V;
C2 =
1000 pF low inductance (e.g. ceramic),
C3 =1 mF (e.g. polycarbonate or polypropylene).
Components R3,R4,C2, and C3 should be mounted as close to the tube as possible.
CX1594, page 4
#
E2V Technologies
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