Agilent Technologies 6680A Uživatelský manuál stáhnout pdf (Strana 85)

86 Principles Of Operation

Figure 4-2. 1ST Stage of the FET H-Bridge Configuration

Output Circuits

The output circuits include the following circuits:

• Chassis mounted components.

• Two power transformers, T900/T901.

• Two inductors, L900/L901.

• Four rectifiers, D900 through D903.

• Output capacitors.

• A7 Snubber board mounted to the heat sink.

• A8 Fast Sense board.

• A9 Slow/Downprogrammer board and output bus bars.

Each combination of power transformers, T900/T901, and rectifiers, D900/D903, couples the output pulses from the A3

FET board. The output of each transformer/rectifier combination is connected in parallel before being applied to the output

filter. The output filter assembly consists of bus bars with the filter capacitors bolted to them. The filter chokes, L902

through L906, consist of ferrite cores enclosing the bus bar. The current-sense resistor, R900, is part of the positive-output

bus bar.

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Agilent Technologies 6680A Uživatelský manuál Strana 85