5725A
Instruction Manual
Power Supply Assembly (A4) |
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The Power Supply assembly (A4) provides regulated system supplies for all 5725A assemblies except as noted below, as well as unregulated fan supply and high voltage supplies for the High Voltage Amplifier. The assembly also includes microprocessor- controlled switching and an independent
Note
Other power supplies are contained on the Current Amplifier assembly (A2). The A2 assembly includes a
The Power Supply assembly has four sections: high voltage supply, switching, current limit, and system supply section. Each section is first briefly described, then described in detail.
∙High Voltage Supply Section
The high voltage supply section consists of a simple unregulated power supply with the additional capability of being run at ±400V dc for normal instrument operation, or at ±50V dc for troubleshooting.
∙Switching Section
The switching section behaves like an electronic DPST switch, which by command of the microprocessor or the
∙
The
∙System Supply Section
The system supply section contains various regulated power supplies, and is comprised of five linear regulators. In addition, the system supply section contains an unregulated supply for the fan.