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Theory of Operation
8
1100 Series FD Reference Manual
273
Detector Lamp Supply Board (FLL)
Lamp Energy Capacitors
The lamp high voltage circuit of the FLF board is used to charge the 4 energy
capacitors of the FLL board. The energy per flash depends on the applied
charging voltage (1/2*C*U
2
). A power diode freewheeling circuit prevents the
backflowing current from generating negative lamp discharge currents which
may damage the flash lamp.
Lamp Ignition Control
An ignition voltage is switched by a thyristor to the TriggerPac ignition
transformer to built a small ionized channel (refer
on page 270). A freewheeling diode forces the thyristor to switch off
again to prevent lamp damage.
Figure 93
Block Diagram FLL Board
FLL Board
Lamp Voltage
Lamp Energy
Capacitor
Lamp Ignition
Control
Ground
Trigger Voltage
Trigger Control
Trigger
Pac
Xenon Flash
Lamp
Summary of Contents for 1100 Series
Page 1: ...s1 Agilent 1100 Series Fluorescence Detector Reference Manual Agilent G1321A Asset 304025 ...
Page 12: ...12 1100 Series FD Reference Manual ...
Page 58: ...60 1100 Series FD Reference Manual 2 First Steps with the Fluorescence Detector ...
Page 126: ...128 1100 Series FD Reference Manual 4 Troubleshooting and Test Functions ...
Page 260: ...262 1100 Series FD Reference Manual 7 Introduction to the Fluorescence Detector ...
Page 324: ...326 1100 Series FD Reference Manual 9 Introduction to the Control Module ...
Page 340: ...342 1100 Series FD Reference Manual A Safety Information ...
Page 345: ......