The manual for BK Precision models 1760A, 1761, and 1762 covers setup and operation instructions for triple output DC power supplies, detailing features such as independent and tracking modes, constant voltage/current operation, and overload protection. It also includes troubleshooting and maintenance guidance, emphasizing safety precautions to prevent electrical shock during use.
Manual Overview
The B+K Precision Triple Output DC Power Supplies, models 1760A, 1761, and 1762, are designed for general-purpose use, featuring two main adjustable supplies and a third auxiliary output. Each supply can be monitored via dual 4-digit LED displays for current or voltage. Troubleshooting primarily involves checking for overload conditions, indicated by an LED, and ensuring proper connection to prevent reverse polarity damage. Error diagnostics include observing the LED indicators for constant voltage (CV) or constant current (CC) modes, which automatically switch based on load conditions. Calibration involves adjusting the coarse and fine voltage controls for precise settings, with specific adjustments detailed for each supply and metering system. Board-level guidance includes maintaining proper isolation from chassis and earth ground to ensure operational flexibility. The manual emphasizes safety precautions, particularly when working with high voltage, and provides detailed instructions for fuse replacement and line voltage conversion. Regular maintenance and adherence to safety guidelines are crucial for optimal performance and technician safety.
Quick Issues Covered
- Diagnose power-up failures with LED display error codes.
- Calibrate voltage and current settings for precise output.
- Use schematics for circuit tracing and troubleshooting.
Overview
The B+K Precision Triple Output DC Power Supplies, models 1760A, 1761, and 1762, are high-quality, general-purpose DC power sources. They provide two main supplies and a third auxiliary output with a 4-6.5V (2-6.5V for models 1761 & 1762) DC output. The main supplies are adjustable with coarse and fine voltage controls and can output 0-2A (0-3A for model 1761). The third supply can output 0-5A, suitable for digital logic circuitry. The power supplies feature dual 4-digit LED displays for monitoring output current or voltage. They can operate independently or in series/parallel tracking modes, allowing for double voltage or current settings. The units offer excellent regulation, low ripple, built-in overload protection, reverse polarity protection, and current limiting. The output is isolated from chassis and earth ground for flexible connections.
Specifications
- Triple Output
- DC Power Supply
- Dual 4-Digit LED Displays
- Adjustable Main Supplies
- Coarse and Fine Voltage Controls
- Current Output: 0-2A (0-3A for model 1761)
- Third Supply: 4-6.5V (2-6.5V for models 1761 & 1762)
- Third Supply Current Output: 0-5A
- Built-in Overload Protection
- Series and Parallel Tracking Modes
- Reverse Polarity Protection
- Isolated Output from Chassis and Earth Ground
Controls & Indicators
Refer to the PDF for details.
Installation / Setup
Refer to the PDF for details.
Operation
The B+K Precision Triple Output DC Power Supplies offer independent operation of the “A” or “B” supply, with the ability to operate in constant voltage or constant current modes. The crossover between these modes is smooth and automatic, indicated by LEDs. The supplies can be used independently or in series or parallel tracking modes. In series tracking, the “B” Supply tracks from 5% to 100% of the “A” Supply’s voltage, allowing for double the voltage setting. In parallel tracking, the supplies are connected in parallel, allowing for double the current setting. The “third” auxiliary output is ideal for digital logic circuitry, with overload protection and a current output of 0-5A. The supplies feature excellent regulation, low ripple characteristics, and built-in protections such as reverse polarity and current limiting.
Troubleshooting & Error Codes
Refer to the PDF for details.
Safety & Warnings
Normal use of test equipment can expose users to electrical shock hazards, especially when testing in areas with high voltage. A current of 10 milliamps passing through the heart can be lethal, and voltages as low as 35 volts DC or AC rms should be considered dangerous. Users should adopt safe work habits to avoid contact with high voltage and steer current away from the heart. Specific safety precautions include:
1. While the DC output of the power supply poses little shock risk, certain test conditions can create high voltage hazards:
a. A serious shock hazard exists if the equipment under test is a “hot chassis” type unless it is unplugged or an isolation transformer is used.
b. If the equipment under test is powered up and uses high voltage, the power supply outputs may float to a high potential. High voltage may appear unexpectedly in defective equipment. Do not float the power supply output to more than 100 volts peak with respect to chassis or earth ground.
c. Discharge high-voltage capacitors before making connections or tests if the equipment under test is off and uses high voltage under normal operation.
2. Use a polarized 3-wire AC outlet to ensure the power supply chassis, case, and ground terminal are connected to a good earth ground, reducing shock risk.
3. Avoid unnecessary exposure to high voltage. Remove housings and covers only when necessary, turn off equipment while making test connections in high-voltage circuits, and discharge high-voltage capacitors after removing power.
Download MANUAL Manual (PDF – 2.0 MB)
Bk-precision-1760a-instruction MANUAL PDF: Guide for technicians to troubleshoot and calibrate the 1760a model. File size: 2.0 MB.
- Brand: Bk-precision-1760a-instruction
- Model: MANUAL
- Type: Manual
- File size: 2.0 MB
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-1760a-instruction MANUAL Overview
The Bk-precision-1760a is a versatile digital multimeter designed for accurate electrical measurements in both professional and hobbyist environments. This device provides reliable readings for voltage, current, resistance, and continuity, making it an essential tool for troubleshooting electrical circuits and performing routine maintenance on electronic equipment.
Main Features and Specifications
- True RMS measurement for accurate AC readings
- Wide measurement range: up to 600V AC/DC voltage, 10A current
- Resistance measurement up to 40MΩ
- Continuity buzzer and diode test function
- Backlit LCD display for easy reading in low-light conditions
- Auto-ranging and manual ranging modes
- Data hold and relative measurement functions
- Overload protection on all ranges
- Compact and ergonomic design with a durable casing
Basic Usage and Operation Tips
To operate the Bk-precision-1760a, first ensure the device is powered on and set to the desired measurement mode using the rotary switch. Connect the test leads to the appropriate input jacks and then to the circuit or component under test. For voltage measurements, place the leads in parallel with the component; for current, connect them in series. Always start with the highest range if unsure of the measurement value to prevent damage. Use the data hold function to freeze readings for easier recording.
Troubleshooting and Maintenance
If the multimeter displays erratic readings or fails to power on, check the battery level and replace if necessary. Ensure test leads are intact and properly connected. Clean the device regularly with a dry cloth and avoid exposure to moisture or extreme temperatures. If the device experiences frequent overload indications, verify that the measurement range is set correctly and that the circuit does not exceed the device’s limits. For persistent issues, refer to the full manual PDF for detailed troubleshooting steps.
Safety Reminder
Always observe proper safety precautions when using the Bk-precision-1760a. Do not exceed the maximum input limits to avoid electric shock or damage to the device. Use insulated test leads and avoid contact with live circuits during measurement. Disconnect power before testing resistance or continuity. Keep the device away from flammable materials and store it in a safe, dry place when not in use.