The manual for the B+K Precision Model 1746B DC Power Supply provides detailed instructions on setup, operation, and troubleshooting, including safety precautions, equipment hook-up, and operating modes for constant voltage and constant current applications. It also covers features such as overload protection, reverse polarity protection, and the ability to connect multiple power supplies in series or parallel for increased output.
Manual Overview
The B+K Precision Model 1746B DC Power Supply manual provides detailed guidance on troubleshooting, diagnostics, calibration, and adjustments. The power supply offers 0-16V and 0-10A outputs, with coarse and fine controls for precise adjustments. It features two current ranges, High and Low, for enhanced current settability and meter resolution. The manual emphasizes the smooth automatic crossover between constant voltage and constant current modes, indicated by LED lights. Error diagnostics are facilitated by the built-in metering system, which continuously monitors output voltage and current. Calibration involves setting current limits from 5% to 100% of maximum output, with adjustments made using the High-Low switch. The manual also includes board-level guidance for fuse replacement and line voltage conversion. The power supply is protected against reverse polarity and overload, ensuring reliability and safety. The output is isolated from the chassis, allowing flexible connections, including series or parallel configurations for increased output. The manual provides comprehensive instructions for maintaining optimal performance and ensuring safe operation.
Quick Issues Covered
- Diagnose constant voltage/current mode crossover issues.
- Troubleshoot power-up failures with LED mode indicators.
- Use schematics for circuit tracing and fault isolation.
Overview
The B+K Precision Model 1746 DC Power Supply is a high-quality general-purpose DC power source providing 0-16 volts DC output, adjustable with coarse and fine controls for precision. It offers a current output of 0-10 amps with two current ranges for better settability and meter resolution. The power supply features excellent regulation, low ripple characteristics, and incorporates a pre-regulator to reduce internal power dissipation. It can operate in constant voltage or constant current modes with smooth automatic crossover, and includes reverse polarity protection and current limiting. The output is isolated from chassis and earth ground, allowing flexible connections. It is suitable for various applications including electronics servicing, manufacturing, design labs, education, and hobbyist use.
Specifications
- OUTPUT VOLTAGE
- to 16 VDC, coarse and fine adjustment
- OUTPUT CURRENT
- High Range — O to 10 A
- Low Range — O to 2 A
- CONSTANT VOLTAGE OPERATION
- Voltage Regulation
- Line (108-132) <(0.2% +2 mV)
- Load (no load to full load) <(0.04% +2 mV)
- Recovery Time <100 µs typical
- Ripple Voltage RMS 5 mV
- Temperature Coefficient 300 PPM/°C
- CONSTANT CURRENT OPERATION
- Adjustable Current Limits 5% to 100%
- Current Regulation
- Line (108-132 V) <0.4% +5 mA
- Load <0.4% +5 mA
- Current Ripple <3 mA typical
- DIMENSIONS (H x W x D)
- 5.7” x 10.5” x 15”
- (145 mm x 267 mm x 381 mm)
- WEIGHT
- 20 lb
- METERING
- Voltmeter
- Range 0 to 16 V
- Accuracy ±2.5%
- Ammeter
- Hi Range 0 to 10 A
- Lo Range 0 to 2 A
- Accuracy ±2.5%
- POWER REQUIREMENTS
- Domestic: 120 VAC ±10%, 60 Hz
- International: 120, 220, 230, 240 VAC ±10%, 50/60 Hz
- POWER CONSUMPTION
- Approximately 380 Watts or less at full load
- PROTECTION
- Reverse polarity protection: current limiting
- TEMPERATURE RANGE
- Operation 0 to +40° C <75% R.H.
- Storage -15° to +70° C <85% R.H.
- ACCESSORIES SUPPLIED
- Spare Fuse
- Instruction Manual
Controls & Indicators
The front-panel controls and indicators for the Mode! 1746B DC Power Supply include:
1. C.C. (Constant Current) Indicator: A red LED that lights up in constant current mode, indicating that the unit is regulating output current at the value set by the current control.
2. C.V. (Constant Voltage) Indicator: A green LED that lights up in constant voltage mode, indicating that the unit is regulating output voltage at the value set by the voltage controls.
3. Coarse Control: Used for coarse adjustment of the output voltage, with the value read on the voltmeter.
4. Fine Control: Used for fine adjustment of the output voltage, with the value read on the voltmeter.
5. CURRENT Control: Adjusts the current limit in constant voltage mode and adjusts the constant current mode. The range of adjustment is determined by the High-Low switch.
6. High-Low Switch: Selects the current range. The High position selects the high current range, and the Low position selects the low current range.
7. ON-OFF Switch: Power control for the unit.
8. “+” Terminal (Red): Positive polarity output terminal.
9. “i” Terminal (Green): Earth and chassis ground.
10. “-” Terminal (Black): Negative polarity output terminal.
11. A Meter: Reads output current in amperes. Uses the top scale when the High-Low switch is set to High and the bottom scale when the switch is set to Low.
12. V Meter: Reads output voltage on a 0 to 64 V scale.
Installation / Setup
Refer to the PDF for details.
Operation
The B+K Precision Model 1746 DC Power Supply can be used in constant voltage or constant current applications. The transition between these modes is automatic, with LED indicators showing whether the unit is in constant voltage (CV) or constant current (CC) mode. In constant voltage mode, a current limit can be preset, and if load variations cause the current to reach this limit, the unit will regulate the output current instead of the voltage. Current limits are adjustable from 5% to 100% of the maximum. In constant current mode, the maximum voltage can be preset, and if load variations cause the current to drop below the regulated value, the unit will revert to regulated voltage operation. The power supply features reverse polarity protection and current limiting to prevent damage. The output is isolated from the chassis and earth ground, allowing for flexible connections. Two supplies can be connected in series for a 0-to-32 volt power source or in parallel for increased output current.
Troubleshooting & Error Codes
Refer to the PDF for details.
Safety & Warnings
Use only a polarized 3-wire AC outlet to ensure that the power supply chassis, case, and ground terminal are properly grounded.
Download MANUAL Manual (PDF – 906.5 KB)
Bk-Precision 1746B Manual: Guides technicians in troubleshooting and calibrating the Bk-Precision 1746B power supply. PDF size: 906.5 KB.
- Brand: Bk-precision-1746b-instruction
- Model: MANUAL
- Type: Manual
- File size: 906.5 KB
Overview
Brief overview of the product.
Specifications
- Key spec 1
- Key spec 2
Controls & Indicators
Control panel/button layout.
Installation / Setup
- Step 1…
- Step 2…
Operation
Basic usage, modes, cycles.
Troubleshooting & Error Codes
| Issue / Code | Fix |
|---|---|
| Example | How to fix… |
Safety & Warnings
- Important warning…
Downloads
Bk-precision-1746b-instruction MANUAL Overview
The Bk-precision-1746b is a versatile digital multimeter designed for accurate electrical measurements in both professional and hobbyist environments. This device provides reliable readings of voltage, current, resistance, and continuity, making it an essential tool for troubleshooting and testing electronic circuits and components.
Main Features and Specifications
- Measurement Functions: AC/DC Voltage, AC/DC Current, Resistance, Continuity, Diode Test
- Display: Large backlit LCD for clear readings in various lighting conditions
- Auto and Manual Ranging for flexible measurement options
- Data Hold and Max/Min recording functions
- Input Protection to prevent damage from overloads
- Battery Powered with low battery indicator
- Compact and ergonomic design for comfortable handling
Basic Usage and Operation Tips
Before taking any measurements, ensure the multimeter is set to the correct measurement mode and range. Connect the test leads securely to the appropriate input jacks. For voltage measurements, place the probes across the component or circuit points. When measuring current, always connect the meter in series with the circuit. Use the data hold function to freeze readings for easier viewing. Always start with the highest range to avoid damaging the meter and then adjust downward for more precise measurements.
Troubleshooting and Maintenance
If the multimeter displays erratic readings or fails to power on, check the battery and replace it if necessary. Inspect the test leads for any signs of damage or wear and replace if needed. Clean the device regularly with a dry cloth and avoid exposure to moisture or extreme temperatures. If the device shows “OL” or overload, reduce the measurement range or check the circuit connections to prevent damage.
Safety Reminder
Always observe standard electrical safety precautions when using the Bk-precision-1746b. Never measure voltage or current beyond the specified limits of the device. Avoid contact with live circuits and wear appropriate personal protective equipment when necessary. Disconnect power before testing resistance or continuity to prevent electrical shock or damage to the multimeter.