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INSTRUCTION
MANUAL
MODELS 1651A & 1652
MODELOS 1651A & 1652
El Manual de la Instrucción
Triple Output
DC POWER SUPPLY
FUENTES DE PODER
De Triple Salida DC
1
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TEST INSTRUMENT SAFETY WARNING Normal use of test equipment exposes you to a certain amount of danger from electrical shock because testing must sometimes be performed where exposed high voltage is present. An electrical shock causing 10 milliamps of current to pass through the heart will stop most human heartbeats. Voltage as low as 35 volts dc or ac rms should be considered dangerous and hazardous since it can produce a lethal current under certain conditions. Higher voltages are
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Instruction Manual Triple Output DC POWER SUPPLY 22820 Savi Ranch Parkway Yorba Linda, CA 92887 www.bkprecision.com 3
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TABLE OF CONTENTS Page Page TEST INSTRUMENT SAFETY........inside front cover Parallel Tracking Operation...................................... 22 INTRODUCTION.........................................................1 Fixed 5 V Power Supply Operation.......................... 25 FEATURES ...................................................................3 APPLICATIONS.................................................... 29 SPECIFICATIONS.......................................
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INTRODUCTION The B & K-Precision Models 1651A & 1652 Triple Output The fixed 5V supply is ideal for powering digital logic DC Power Supplies are high quality, general purpose dc power circuitry. The 0-4 amp capacity allows the supply to be used sources. They provide two supplies with a 0-24 volt dc output for large circuits. Built-in overload protection automatically and one with a fixed 5 volt dc output. The 0-24V supplies are limits the current output to a maximum of 4 amps.
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INTRODUCTION______________________________________________________________________________________ The features and versatility of these units, especially the The same features that make the Model 1651A and 1652 a triple output and tracking features, make them an ideal good choice for an engineering lab also make them a good choice general purpose power supply for engineering lab for most other solid state electronic applications. These applications. They can serve as a single or mul
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FEATURES TRIPLE OUTPUT SINGLE 0-24V 1 AMP SUPPLY Operates as three separate power supplies. Each has floating Parallel tracking feature allows use of “A” and “B” output and is completely isolated from the other two. supplies as a 0-to-24 V supply with a 1 amp current capacity (through “A” output terminals). ONE FIXED 5V SUPPLY CONSTANT VOLTAGE OR CONSTANT CURRENT 0-to-4 amp fixed 5 volt supply is ideal for use with most The “A” and “B” supplies provide regulated dc v
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FEATURES__________________________________________________________________________________________ REVERSE POLARITY PROTECTION ISOLATED OUTPUT Either polarity may be floated or grounded Prevents damage to power supply from external voltage of reverse polarity. OVERLOAD PROTECTION Fully adjustable current limiting (from 6% to 100% HOOK-UP CABLES of maximum output current) for “A” and “B” supplies Supplied with three sets of red and black hook-up leads. protects circuit
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SPECIFICATIONS “A” AND “B” SUPPLIES Constant Current Operation: Output Voltage Range: Adjustable Current Limits: ≤30mA to ≥500mA 0V to 24VDC (0 ± 100mV) Current Regulation: Output Current Limit Range: Load: ≤0.2% + 6mA. 0 to 0.5A. Line (108 – 132V): ≤0.2% + 3mA. Constant Voltage Operation: Ripple Current and Noise: ≤3mA rms. Voltage Regulation: Metering (“A” & “B” only): Load: ≤0.01% + 3mV Line (108 – 132V):
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SPECIFICATIONS_____________________________________________________________________________________ Temperature Range FIXED 5V SUPPLY & Humidity: Output Voltage: 5V ± 100mV. Operation: 0°C to 40°C <80% R.H. Storage: -20°C to 60°C <70% Maximum Current: ≥4A. R.H. Load Regulation: ≤10mV. Dimensions (HxWxD): 4.5 x 11.75 x 10.375” Line Regulation 108 – 132 V: ≤5mV (114 x 298 x 264 mm)
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CONTROLS AND INDICATORS 1. POWER Switch. Turns power on and off. b. When the switch is in the middle position, the unit is in the PARALLEL TRACKING mode. In 2. Power ON light. Red LED lights to indicate a power on this mode the “A” and “B” supplies are wired condition. together in parallel and both the maximum current and voltage are set using the “A” 3. GND Terminal (Green). Earth and Chassis Ground. controls. The “A” and “B” outputs can be used as two indiv
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CONTROLS AND INDICATORS__________________________________________________________________________ Figure 1. Front panel controls and indicators 8
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__________________________________________________________________________CONTROLS AND INDICATORS 10. CURRENT Control. Adjusts current limit of “A” “B” SUPPLY CONTROLS AND INDICATORS supply in constant voltage mode. Adjusts constant 14. VOLTAGE Control. Adjusts the output voltage of the current value of “A” supply in constant current mode. “B” supply when the INDEPENDENT mode is selected. Adjusts the constant current value of the “B” supply Voltage can be read on the V Meter when
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CONTROLS AND INDICATORS__________________________________________________________________________ FIXED 5V SUPPLY TERMINALS AND INDICATOR REAR PANEL CONTROLS 19. “+” Terminal (Red). Positive polarity output terminal 22. LINE VOLTAGE SELECT Switches. Combination for FIXED 5V supply. settings allow Universal Power Operation; 20. “-“ Terminal (Black). Negative polarity output terminal 23. Line Cord Receptacle. Fuse. for FIXED 5V supply. 21. OVERLOAD Indicator. Lights when
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__________________________________________________________________________CONTROLS AND INDICATORS Figure 2. Rear panel controls. 11
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OPERATING INSTRUCTIONS SAFETY PRECAUTIONS EQUIPMENT PRECAUTIONS Avoid using the power supply in ambient temperatures CAUTION above +40° C. Always allow sufficient air space around the heat sink at the rear of the power supply for effective Avoid contacting the heat sink at the rear of the power radiation to prevent internal heat build-up. supply. When the unit is providing large amounts of Although the power supply is protected against reverse polarity damage, the cir
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___________________________________________________________________________OPERATING INSTRUCTIONS Hook-up 1. Observe proper polarity. If the circuit being powered is not equipped with reverse polarity protection, 3. Set the INDEPENDENT/TRACKING mode switch to damage to the circuit can result from reverse polarity. the right position so that the power supply is in the Use color coded hook-up leads, for convenience in INDEPendent operating mode. identifying polarity, red for (+)
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OPERATING INSTRUCTIONS___________________________________________________________________________ Figure 3. Independent operation grounding possibilities (sheet 1 of 2) 14
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___________________________________________________________________________OPERATING INSTRUCTIONS Figure 3. Independent operation grounding possibilities (sheet 2 of 2) 15
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OPERATING INSTRUCTIONS___________________________________________________________________________ 8. If the load current exceeds the preset current limit, the CONSTANT CURRENT indicator will light. In this case, the power supply automatically switches to the constant current mode and further rotation of the VOLTAGE control will not increase the output voltage. Setting Current Limit 1. Determine the maximum safe current for the device to be powered. 2. Tempora
