Varian 70 Series Manuals

Manuals and User Guides for Varian 70 Series. We have 1 Varian 70 Series manual available for free PDF download: Manual

Varian 70 Series Manual

Varian 70 Series Manual (36 pages)

Brand: Varian | Category: Power Supply | Size: 1.2 MB

Table of Contents

Table of Contents
3
Table 1-1. Power-Supply Specifications
6
Section 2 Installation
7
Figure 2-1. Power Supply (Front)
7
Inspection
7
Physical Description
7
Figure 2-2. Power Supply (Back)
8
Figure 2-3. Jumpers for 115V Ac and 230V Ac Service
9
Line Voltage Jumpers
9
Figure 2-4. Typical Power-Supply Interconnection
10
Interconnection
10
Output Voltage Adjustment
12
Power-Failure Alarm Adjustment
12
Data Saver (Optional)
12
Section 3 Operation
13
Figure 4-1. Power Supply Block Diagram
15
Section 4 Theory of Operation
15
Figure 4-2. Input-Circuit Block Diagram
16
Input Circuits
16
Figure 4-3. Preregulator Simplified Circuit Diagram
17
Figure 4-4. Typical Preregulator Voltage Levels
17
Preregulator
17
Preregulator Transformer
18
Power Transformer
18
Rectifiers and Filters
18
Pass Transistors and Voltage Regulators
18
Figure 4-5. IC Voltage-Regulator Block Diagram
19
Regulator
19
Logic) Regulator
21
Figure 4-9. -12V Regulator
22
Memory) Regulator
22
12-Volt Regulator
22
Figure 4-10. +22.5V Regulator
23
Regulator Circuit
23
Power-Failure Alarm and System Reset
23
Figure 4-11. Power-On/Off Timing
24
Table 4-1. Power-Failure Alarm Characteristics
24
Hold Circuit
25
Overvol Tage Protection
25
Table 4-2. Data-Saver Specifications
26
Data Saver (Optional)
26
Section 5 Maintenance
29
Preventive Maintenance
29
Corrective Maintenance
29
Table 5-2. Fault Isolation Techniques
30
Section 6 Mnemonics
33

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