Related Manuals for Elenco Electronics XP-650
Summary of Contents for Elenco Electronics XP-650
- Page 1 VARIABLE REGULATED POWER SUPPLY MODELS XP-650 / XP-750 Model XP-650 Model XP-750 Instruction Manual Elenco Electronics, Inc. Copyright © 1989 Elenco Electronics, Inc. Revised 1998 REV-D 753650...
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Page 2: Table Of Contents
0-20V or 0-40V Regulators XP-750 Digital Meters Maintenance and Calibration Variable 0-20VDC Regulator Calibration Variable 0-40VDC Regulator Calibration Digital Meter Calibration on Model XP-750 Parts List XP-650 Parts List XP-750 Schematic Diagram XP-650 Schematic Diagram XP-750 Page 2 Page 2... -
Page 3: Safety Precautions
Service repair should be done by qualified personnel who are knowledgeable of electrical haz- ards. Certain safety precautions must be observed when this power supply is used with external circuits that are connected to AC power lines. There is always some danger when working with electrical equipment or circuits that operate at hazardous voltages. -
Page 4: Operating Instructions
The Elenco Models XP-650 and XP-750 use the same power and regulator circuits. The only difference is in the display functions. The Model XP-650 uses a 0-40V and a 0-3A analog meter. Model XP-750 has two digital meters to read voltage and current. The voltmeter has better than 1/2% accuracy. The current meter has better than 1% accuracy. -
Page 5: Power Source
Power Source The power source in both the XP-650 and XP-750 consists of two transformers T1 and T2 and two diode bridges, D1 to D4 and D5 to D8. C3 and C5 are the filter capacitors. Switch S2 places these supplies in series to produce about 50VDC output or in parallel to produce about 25VDC out. -
Page 6: Xp-750 Digital Meters
The Model XP-750 uses two digital meters, one for output voltage and one for output current. The input to the voltmeter comes from a 1000:1 voltage divider, R101 and R102 on the power supply output. Thus, the voltmeter input will be 1mV for a 1V output voltage. Since the meter sensitivity is 10 counts per mV, the meter will read 010. -
Page 7: Maintenance And Calibration
Maintenance and Calibration The Elenco Models XP-650 and XP-750 have been designed and manufactured to require no routine main- tenance. The circuits are protected by design from external shorts or overloads. The following information is provided in the event the supply requires service or re-calibration. -
Page 8: Parts List Xp-650
Lytic 160 F 330V Lytic 470 F 35V Lytic 3300 F 50V Diodes 1N4001 1N4148 1N5240 1N5246 1N5401 Transistors 2N3055 MPS 5172 2N6121 Parts List XP-650 Part # Description Miscellaneous 106803 Transformer PC Board 122200 Fuse 2A 132000 Switch Slide 132201 Switch Illuminated... -
Page 9: Parts List Xp-750
Description Resistors 5% 2W 5% 1/4W 10% 5W 5% 1/4W 5% 1/2W 5% 1/4W 5% 1/4W 5% 1/4W 5% 1/2W 1.2K 5% 1/4W 1.8K 5% 1/4W 1.8K 5% 1/2W 4.7K 5% 1/4W 5% 1/4W 100K 5% 1/4W 5% 1/4W Pot 10K Trim Pot 1K Panel... -
Page 10: Schematic Diagram Xp-650
160 F 330V Schematic Diagram XP-650... -
Page 11: Schematic Diagram Xp-750
160 F 330V Schematic Diagram XP-750... -
Page 12: Warranty Policy
847-541-3800 to obtain a return authorization number (RMA). Direct all warranty inquiries to: Elenco Electronics, Inc. • Service Department 150 West Carpenter Avenue, Wheeling, IL 60090 • Phone: (847) 541-3800 Elenco Electronics, Inc.
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