USER GUIDE |
EAGLE TWO+
Version: 3.3
74
works in bridge configuration along with Transformer T03 and MOSFET are driven by T01,02
pulse transformer. IC‟s U01 & U02 controls the pulse width of ON Time depending on Error
voltage between output dc voltage & set value in particular operating mode. This voltage is
continuously changing during activation hence reflecting the change in pulse width. The output
of Transformer T02 is fed to HF bridge rectifier formed of CR02 to CR05 and filtered by L01
& C10 to C12, which produces pure dc voltage to drive RF stage.
2.
O/P RF amplifier stage
:
This stage is driven by pure controlled dc voltage from HV power
supply and control signal from waveform generator circuit on CPU board. For the Bipolar,
Sealer o/p transformer T05 is selected & for the Monopolar o/p transformer T06 is selected by
transformer selection relay K04& K05.Depending on the selected mode, the o/p transformer
T05 configuration is selected by primary relay K01& K02. Output stage is driven by switching
devices Q09 to Q12 at various levels. CR26 is also used to protect the device from reverse
current.
3.
O/P Resonator and filter
:
RF o/p of amplifier stage is supplied to patient via resonator stage
which is resonating at particular load conditions. This stage has two functions of resonator &
filter for RF frequencies. Inductor L02 & L03 and capacitor C78 to C82 forms the resonator
can filter circuit, which is also used to deliver the o/p in different modes of monopolar &
Inductor L04 & L05 and capacitor C89 to C97 forms the resonator can filter circuit, which is
also used to deliver the o/p in different modes of bipolar,sealer applications.
4.
Configuration & mode selection circuit
:
This circuit is used to obtain the RF o/p at required
channel. Relays K08 to K12 are used to select different o/p channel & load conditions. When
power is delivered in monopolar any of the channels, no leakage power in bipolar or other
monopolar channels. In bipolar mode return electrode circuit & monopolar channel is isolated
from RF by this circuit.
Summary of Contents for EAGLE TWO PLUS
Page 1: ...EAGLE TWO PLUS INSTRUCTION SERVICE MANUAL ...
Page 38: ...USER GUIDE EAGLE TWO Version 3 3 37 ...
Page 39: ...USER GUIDE EAGLE TWO Version 3 3 38 ...
Page 40: ...USER GUIDE EAGLE TWO Version 3 3 39 ...
Page 56: ...USER GUIDE EAGLE TWO Version 3 3 Whittemore Enterprises Inc 55 STEP 5 STEP 8 STEP 6 STEP 7 ...
