The manual for the B&K Precision models 1665, 1666, and 1667 covers safety instructions, specifications, controls, indicators, and operating procedures for setting up and using the bench switching DC power supplies. It also provides troubleshooting tips, warranty information, and service instructions to ensure proper maintenance and repair of the devices.
Manual Overview
The B&K Precision Model 1665/1666/1667 manual provides detailed guidance on troubleshooting, diagnostics, calibration, and adjustments for these bench switching DC power supplies. Troubleshooting involves checking the power supply’s operational modes—constant voltage (CV) and constant current (CC)—and ensuring the correct settings using the coarse and fine adjustment knobs for voltage and current. The manual specifies that automatic crossover between CV and CC modes occurs based on load conditions, and users can preset current limiting values to prevent overloads. Error diagnostics are facilitated by digital LED displays for voltage and current, with indicators for CV and CC modes. Calibration involves using the fine and coarse controls to achieve the desired output. The manual advises on board-level guidance, including proper grounding and connection techniques to avoid high impedance leakage. The power supply’s safety instructions emphasize avoiding exposure to water, ensuring proper ventilation, and adhering to specified voltage ranges. The manual also includes warranty and service information, highlighting the importance of using the product within its specified range to maintain warranty coverage.
Quick Issues Covered
- Diagnose power-up failures with voltage and current indicators.
- Adjust output voltage/current using coarse and fine controls.
- Trace circuits using detailed schematics for troubleshooting.
Overview
The manual covers the operation and specifications of the B&K Precision Model 1665, 1666, and 1667 bench switching DC power supplies. It includes safety instructions, an introduction to the product, specifications, controls and indicators, operation procedures, warranty information, and service details. The power supplies are laboratory-grade with features such as coarse and fine output voltage and current limiting controls, making them suitable for research and development work. They have digital LED meters, thermostatic control fans, and are CE approved. The manual provides detailed guidance on using the power supplies in constant voltage and constant current modes.
Specifications
- Output Voltage: 1-19VDC (1665), 1-40VDC (1666), 1-60VDC (1667)
- Output Voltage Control: Fine & Coarse
- Output Current: 0-10A (1665), 0-5A (1666), 0-3.3A (1667)
- Ripple & Noise (P-P): 20mV
- Load Regulation: 0.5% + 200mV
- Line Regulation: 50mV
- Input Voltage: 100 – 240 VAC, 50Hz / 60Hz
- Meter Type: Digital LED
- Voltmeter Resolution: 10 mV
- Ammeter Resolution: 10mA
- Voltmeter Accuracy: 1% + 2 counts
- Ammeter Accuracy: 0.5% + 2 counts
- Indicators: CC & CV
- Cooling System: Thermostatic control fan
- Protection Devices: Approvals: CE
- Dimension (WxHxD): 8" x 4.5" x 11" (205 x 115 x 275 mm)
- Weight: 6.6lbs (3 Kg)
Controls & Indicators
Power Switch — Turns the power supply ON/OFF.
DC Voltmeter (LED Display)* — Indicates the present output voltage with auto range.
DC Ammeter (LED display) — Indicates the present output current with auto range.
Constant Current Mode (C.C.) — Indicator indicates the power supply is operating in constant current mode.
Constant Voltage Mode (C.V.) — Indicator indicates the power supply is operating in voltage mode.
Current Fine Adjust — Fine adjust knob for current limiting point and current value in constant current mode.
Current Coarse Adjust — Coarse adjust knob for current limiting point and current value in constant current mode.
Voltage Fine Adjust — Fine adjust knob for the output voltage in voltage mode.
Voltage Coarse Adjust — Coarse adjust knob for the output voltage in voltage mode.
Output Terminal Positive (+) — Terminal for tapping of positive (+) output.
Output Terminal Negative (-) — Terminal for tapping of negative (-) output.
GND Terminal — Chassis ground terminal. Normally, this is connected to either the + or – terminal depending on the application.
Installation / Setup
The setup highlights for the bench switching DC power supplies include ensuring the unit is used within its specified range and verifying the rated input voltages on the rating label before plugging into the AC supply. It is important to allow at least 80 mm of space from the wall for the fan on the rear panel. The power supply features dual controls for output voltage and current limiter, consisting of coarse and fine adjustments. Ground connections can be made using the shorting plate at the terminal, and the power supply can operate as a constant voltage or constant current source with automatic crossover based on load conditions.
Operation
The operation of the power supply involves controlling the output voltage and current using coarse and fine potentiometers. The device can function as either a constant voltage source or a constant current source, with automatic crossover between modes depending on load conditions. The power supply operates as a constant voltage source if the load current is below the set current limit. If the load current meets or exceeds the current limit, it switches to constant current mode. The current limiting value can be preset by short-circuiting the output terminals and adjusting the current limit control. Ground connections can be made for either positive or negative output terminals, and there is a note about potential high impedance leakage when operating without grounding.
Troubleshooting & Error Codes
Refer to the PDF for details.
Safety & Warnings
Do not use this apparatus near water.
Clean only with dry cloth.
Do not block any ventilation openings.
Do not install unit near any heat source or heating emitting devices.
Prevent the power cord from being walked on or pinched.
Unplug this unit during lighting storms or when unused for long periods of time.
The unit must be used within its specified range.
The rated input voltages can be found on the rating label at the back the unit.
Before plugging into the AC supply, check with the rating label.
Refer all servicing to manufacturer.
Model 1667 has maximum output voltage up to 60Vdc. It may be hazardous to touch metal part of the output terminals. User must avoid touching live metal part of the output terminals.
Download 2 Manual (PDF – 221.9 KB)
Bk-precision-1666-instruction-manual Model 2: Guide for technicians on troubleshooting and calibrating equipment. File size: 221.9 KB.
- Brand: Bk-precision-1666-instruction-manual
- Model: 2
- Type: Manual
- File size: 221.9 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-1666 Instruction Manual Overview
The Bk-precision-1666 is a versatile and reliable piece of test equipment designed for accurate electrical measurements. Ideal for technicians, engineers, and hobbyists, this device provides precise readings for voltage, current, resistance, and other critical parameters. Its robust design and user-friendly interface make it suitable for both laboratory and field applications.
Main Features and Specifications
- Wide measurement range including AC/DC voltage, current, and resistance
- High accuracy with a resolution up to 0.01 units
- Backlit LCD display for easy reading in low-light conditions
- Auto-ranging capability for quick and efficient measurements
- Data hold function to freeze readings on the display
- Overload protection to ensure device safety and longevity
- Compact and lightweight design for portability
Basic Usage and Operation Tips
Before using the Bk-precision-1666, ensure the device is properly calibrated and the batteries are fully charged. Connect the test leads securely to the appropriate terminals. Select the desired measurement mode using the function dial. When measuring voltage or current, always start with the highest range to prevent damage. Use the data hold button to freeze the displayed value for easier recording. Turn off the device after use to conserve battery life.
Troubleshooting and Maintenance
If the device fails to power on, check the battery compartment for proper installation or replace the batteries if necessary. In case of erratic or inaccurate readings, verify that the test leads are intact and firmly connected. Clean the exterior with a soft, dry cloth; avoid using solvents or abrasive materials. Regularly inspect the device for signs of wear or damage and have it serviced by a qualified technician if needed.
Safety Reminder
Always observe proper safety precautions when using the Bk-precision-1666. Avoid contact with live circuits beyond the device’s rated limits. Use insulated test leads and wear appropriate personal protective equipment. Never operate the device in wet or explosive environments. Following these guidelines will help ensure safe and effective operation.