The manual for the B&K Precision Models 1651A and 1652 Triple Output DC Power Supplies covers setup and operation instructions, including independent and tracking modes for the 0-24V supplies, and details on the fixed 5V supply. It also provides troubleshooting guidance, such as safety precautions to prevent electrical shock and instructions for fuse replacement and maintenance.
Manual Overview
The B&K Precision Models 1651A and 1652 Triple Output DC Power Supplies are designed for general-purpose applications, offering two adjustable 0-24V supplies and one fixed 5V supply. The adjustable supplies can deliver up to 0.5 amps, while the fixed supply supports up to 4 amps, making it suitable for digital logic circuits. These power supplies feature overload protection, reverse polarity protection, and current limiting to safeguard both the power supply and connected equipment. They can operate in constant voltage or constant current modes, with automatic crossover between the two. The 0-24V supplies can be used independently or in series and parallel tracking modes, allowing for flexible voltage and current configurations. The series tracking mode provides a single output of 0-48V at up to 0.5 amps, while the parallel mode offers a single 0-24V output at up to 1 amp. The units are equipped with LED indicators for operation modes and have excellent regulation and low ripple characteristics. The output is isolated from chassis and earth ground, allowing versatile connection options.
Quick Issues Covered
- Diagnose power-up failures in Models 1651A & 1652.
- Calibrate current and voltage settings for accurate output.
- Trace circuits using detailed schematics for fault isolation.
Overview
The B & K-Precision Models 1651A & 1652 are high-quality, general-purpose DC power supplies with triple output capabilities. They provide two adjustable 0-24 volt DC outputs and one fixed 5 volt DC output. The adjustable supplies can output 0-0.5 amps, while the fixed supply can handle up to 4 amps, making it suitable for powering extensive digital logic circuitry. These models feature overload protection, excellent regulation, low ripple characteristics, and reverse polarity protection. The supplies can be used independently or in series/parallel tracking modes, offering flexibility for various applications. They are ideal for engineering labs, service shops, industrial testing, educational purposes, and electronic hobbyists.
Specifications
- Triple Output DC Power Supply
- 0-24 volt dc output
- Fixed 5 volt dc output
- 0-4 amp capacity
- Built-in overload protection
- LED indicator for overload
- Excellent regulation
- Low ripple characteristics
- Pre-regulator circuit design
- Reverse polarity protection
- Current limiting
- Output isolated from chassis and earth ground
- Constant voltage or constant current applications
- Smooth and automatic crossover
- LEDs for Constant Current mode
- Adjustable current limits from 6% to 100% of maximum
Controls & Indicators
Refer to the PDF for details.
Installation / Setup
Refer to the PDF for details.
Operation
The B & K-Precision Models 1651A & 1652 Triple Output DC Power Supplies are designed for general-purpose use, providing two adjustable 0-24 volt DC supplies and one fixed 5-volt DC supply. The adjustable supplies can output 0-0.5 amps, while the fixed supply can handle 0-4 amps, making it suitable for digital logic circuitry. The power supplies feature built-in overload protection, excellent regulation, low ripple, and reverse polarity protection. They can operate independently or in tracking modes: series tracking allows a single output of 0-48V at up to 0.5 amps, and parallel tracking allows a single 0-24V output at up to 1 amp. Both 0-24 volt supplies can be used in constant voltage or constant current applications, with smooth and automatic crossover between modes. The output is isolated from chassis and earth ground for flexible connections. The units can be configured for split supply operation and are suitable for various electronic applications, including engineering labs, service shops, and educational purposes.
Troubleshooting & Error Codes
Refer to the PDF for details.
Safety & Warnings
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 even more dangerous. Your normal work habits should include all accepted practices to prevent contact with exposed high voltage, and to steer current away from your heart in case of accidental contact with a high voltage. Observe the following safety precautions:
1. There is little danger of electrical shock from the DC output of this power supply. However, there are several other possible test conditions using this power supply that can create a high voltage shock hazard:
a. If the equipment under test is the “hot chassis” type, a serious shock hazard exists unless the equipment is unplugged (just turning off the equipment does not remove the hazard), or an isolation transformer is used.
b. If the equipment under test is “powered up” (and that equipment uses high voltage in any of its circuits), the power supply outputs may be floated to the potential at the point of connection. Remember that high voltage may appear at unexpected points in defective equipment. Do not float the power supply output to more than 100 volts peak with respect to chassis or earth ground.
c. If the equipment under test is “off” (and that equipment uses high voltage in any of its circuits under normal operation), discharge high-voltage capacitors before making connections or tests. Some circuits retain high voltage long after the equipment is turned off.
2. Use only a polarized 3-wire AC outlet. This assures that the power supply chassis, case, and ground terminal are connected to a good earth ground and reduces danger from electrical shock.
3. Don’t expose high voltage needlessly. Remove housings and covers only when necessary. Turn off equipment while making test connections in high-voltage circuits. Discharge high-voltage capacitors after removing power.
Download MANUAL Manual (PDF – 2.4 MB)
Bk-Precision 1651A Manual: Provides instructions for troubleshooting and calibrating the 1651A power supply. File size: 2.4 MB.
- Brand: Bk-precision-1651a-instruction
- Model: MANUAL
- Type: Manual
- File size: 2.4 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-1651a-instruction MANUAL Overview
The Bk-precision-1651a is a versatile digital multimeter designed for accurate measurement of electrical parameters. Ideal for both professional technicians and hobbyists, this device provides reliable readings for voltage, current, resistance, and continuity testing. Its compact design and user-friendly interface make it an essential tool for troubleshooting and maintaining electrical circuits.
Main Features and Specifications
- Measurement functions: AC/DC voltage, AC/DC current, resistance, continuity, and diode test
- Auto and manual ranging modes for flexible measurement
- Backlit LCD display for easy reading in low-light conditions
- Data hold function to freeze readings on the display
- Overload protection to safeguard the device and user
- Compact and lightweight design for portability
- Battery powered with low battery indicator
Basic Usage and Operation Tips
Before using the Bk-precision-1651a multimeter, ensure the device is powered on and the correct measurement mode is selected. Connect the test leads to the appropriate input jacks and touch the probes to the circuit or component under test. Use the data hold function to capture readings when needed. Always start with the highest range if the expected measurement is unknown to prevent damage. When measuring current, ensure the multimeter is connected in series with the circuit.
Troubleshooting and Maintenance
If the multimeter displays erratic readings or fails to power on, check the battery and replace it if necessary. Clean the test leads and input jacks regularly to maintain good contact. Avoid exposing the device to moisture or extreme temperatures. If the device shows an overload indication, reduce the measurement range or disconnect the test leads immediately. Store the multimeter in a dry, dust-free environment when not in use.
Safety Reminder
Always observe proper safety precautions when working with electrical equipment. Never exceed the rated input limits of the multimeter. Use insulated test leads and avoid contact with live circuits to prevent electric shock. Disconnect power before testing resistance or continuity to avoid damage to the device and ensure user safety.