The manual for the B+K Precision Model 1686A DC Power Supply provides detailed instructions for setup, operation, and troubleshooting, including safety precautions to prevent electrical shock and guidelines for connecting and using the power supply with various electronic equipment. It also covers the specifications of the power supply, such as its voltage and current output capabilities, and includes information on its protective features like foldback current limiting and reverse polarity protection.
Manual Overview
The B+K Precision Model 1686A is a DC power supply designed for bench powering automotive and marine electronic equipment, offering an adjustable output voltage from 3 to 14 volts and a maximum current of 12 amps at higher voltages. The power supply features foldback current limiting to protect against short circuits and overloads, and its output is isolated from the chassis and earth ground for flexible connections. The unit includes two panel-mounted meters for continuous monitoring of voltage and current. Troubleshooting involves checking for overloads indicated by an overload light and ensuring proper ventilation to avoid overheating. Calibration and adjustments are made using the front panel controls, which include a voltage control knob and meters for voltage and current. The manual emphasizes safety precautions, such as using a polarized 3-wire AC outlet and avoiding exposure to high voltage. The power supply should not be floated to more than 100 volts peak with respect to ground. Proper hook-up and operation require turning off the power supply and equipment before making connections and ensuring correct polarity to prevent damage.
Quick Issues Covered
- Diagnose power-up failures with overload indicator and fan operation.
- Error codes for foldback current limiting and short circuit protection.
- Schematics aid in tracing output voltage and current regulation circuits.
Overview
The B+K Precision Model 1686A is a DC power supply designed for bench powering automotive and marine electronic equipment. It provides an adjustable output voltage from 3 to 14 volts, with a maximum current of 12 amps at 13.8 to 14 volts, and 2.5 amps at 3 volts. The power supply features thermostatically controlled fan cooling, foldback current limiting for protection against short circuits and overloads, and isolated output from chassis and earth ground. It includes panel-mounted meters for monitoring output voltage and current. The manual covers safety precautions, specifications, controls, indicators, and operating instructions to ensure effective and safe use of the power supply.
Specifications
- OUTPUT VOLTAGE
- 3 to 14 VDC, ADJUSTABLE
- OUTPUT CURRENT
- PROPORTIONAL TO OUTPUT VOLTAGE;
- 3V 2.5A
- 5V 4.5A
- 12V 10.0A
- 13.8V 12.0A
- 14V 12.0A
- POWER REQUIREMENTS
- 115/230 VAC +10%, 50/60Hz
- POWER CONSUMPTION
- 400 W
- TEMPERATURE RANGE & HUMIDITY
- Operation: 0° to +40°C < 85% R.H.
- Storage: -15° to +70°C < 75% R.H.
- LOAD REGULATION
- (0 to Rated Current) <0.8%
- LINE REGULATION
- (108-132 VAC) <0.8%
- RIPPLE & NOISE
- <10mV rms
- PROTECTION
- Current Limiting (Foldback), Reverse Polarity, Overvoltage, Short Circuit
- METERING
- Voltmeter
- Range Accuracy: 0 to 20V +7% FS.
- Ammeter
- Range Accuracy: 0 to 20A +7% FS.
- DIMENSIONS (HxWxD)
- 4.9×8.5×11.5" (124 x 216 x 292mm)
- WEIGHT
- 12.1 lb. (5.45 kg)
- ACCESSORIES SUPPLIED
- Instruction Manual
- Spare Fuse
Controls & Indicators
The front-panel controls and indicators for the BK Precision Model 1686A DC Power Supply include:
– POWER Switch: Turns the power supply on and off, indicated by a pilot lamp above the switch.
– Power ON light: Lights when power is turned on.
– OVERLOAD Indicator: Lights when an overload condition exists.
– VOLTAGE Control: Adjusts output voltage, with the value read on the V Meter.
– A Meter: Indicates output current on a 0 to 20 amp scale.
– V Meter: Indicates output voltage on a 0 to 20 volt scale.
– OUTPUT “+” Terminal (Red): Positive polarity output terminal.
– OUTPUT “—” Terminal (Black): Negative polarity output terminal.
– TIE POINTS: Red terminals are positive, Black terminals are negative, with a maximum load not to exceed 2 amperes.
Installation / Setup
The source does not provide specific information on installation or setup highlights such as wiring, clearances, calibration, or prerequisites for the BK Precision Model 1686A DC Power Supply.
Operation
The manual provides basic usage steps for the BK Precision Model 1686A DC Power Supply. To operate the power supply, users should:
1. Ensure the power supply and the equipment being powered are turned off before making any connections.
2. Use solid copper hook-up wire with a minimum gauge suitable for the current being used.
3. Connect the equipment to the power supply using the OUTPUT “+” (Red) and OUTPUT “—” (Black) terminals for positive and negative polarity, respectively.
4. Turn on the power supply using the POWER switch, which is indicated by a pilot lamp above the switch.
5. Adjust the output voltage using the VOLTAGE Control, and monitor the output voltage and current using the V Meter and A Meter, respectively.
6. Ensure adequate ventilation around the power supply to prevent overheating, maintaining at least a two-inch space at the sides and a six-inch space at the top and rear.
7. Avoid using the power supply in ambient temperatures above 40°C (104°F) and ensure the fan and vent openings are not blocked.
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. Even voltages as low as 35 volts DC or AC rms can be dangerous. To reduce risk, follow these safety precautions:
1. Use only a polarized 3-wire AC outlet to ensure the power supply is properly grounded, reducing shock risk.
2. There is minimal shock risk from the power supply output itself, but connecting it to external high voltage or certain equipment can create hazards. Do not float the power supply output to more than 100 volts peak with respect to ground.
3. Follow all test instrument safety precautions, including:
a. Avoid exposing high voltage unnecessarily; remove covers only when needed.
b. Turn off equipment when making high-voltage test connections.
c. Discharge high-voltage capacitors after removing power.
d. Be cautious of “hot chassis” equipment and ensure it is unplugged or follow specific precautions.
e. Discharge high-voltage capacitors in equipment that is off but normally operates with high voltage.
4. Ensure proper ventilation around the power supply to prevent heat build-up, and do not block fan openings or vents.
Download MANUAL Manual (PDF – 693.5 KB)
Bk-precision-1686a-instruction MANUAL helps technicians troubleshoot and calibrate the 1686A model efficiently. File size: 693.5 KB.
- Brand: Bk-precision-1686a-instruction
- Model: MANUAL
- Type: Manual
- File size: 693.5 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-1686a-instruction MANUAL Overview
The Bk-precision-1686a is a versatile digital multimeter designed for accurate electrical measurements in both professional and hobbyist environments. This device provides precise readings of voltage, current, resistance, and other electrical parameters, making it an essential tool for troubleshooting, testing, and maintenance of electronic circuits and 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
- Capacitance measurement capability
- Data hold and relative measurement functions
- Backlit LCD display for clear visibility in low light
- Auto-ranging and manual ranging options
- Overload protection on all ranges
- Compact and ergonomic design with durable casing
Basic Usage and Operation Tips
Before using the Bk-precision-1686a, ensure the device is properly calibrated and the batteries are fully charged. Select the appropriate measurement mode using the rotary switch. Connect the test leads securely to the device and the circuit under test. For voltage measurements, connect in parallel; for current measurements, connect in series. Use the data hold function to freeze readings for easier analysis. Always start with the highest range if unsure about the expected measurement value to prevent damage to the meter.
Troubleshooting and Maintenance
If the meter displays erratic readings or no display, check the battery status and replace if necessary. Inspect test leads for damage or wear and replace if faulty. Clean the device regularly with a dry cloth and avoid exposure to moisture or extreme temperatures. If the device fails to operate correctly after these steps, consult the manual or contact authorized service centers for repair.
Safety Reminder
Always observe proper safety precautions when using the Bk-precision-1686a. Avoid measuring voltages exceeding the specified limits. Never touch the metal parts of the test leads during measurements. Use insulated gloves and safety glasses when working with high voltages. Disconnect power sources before connecting or disconnecting test leads to prevent electric shock or damage to the device.