The manual for the Model 1790 High Current Power Supply provides detailed instructions on setup, operation, and troubleshooting, including how to adjust voltage and current limits, use remote programming, and perform initial inspections and electrical checks. It also covers installation requirements such as input power specifications, location considerations, and rack mounting options.
Manual Overview
The B&K Model 1790 High Current Power Supply manual provides detailed guidance on installation, operation, and troubleshooting. The power supply is designed for bench or rack operation, offering a regulated output of 0-64V at up to 10 Amps, with automatic crossover between constant voltage and constant current modes. Troubleshooting focuses on ensuring proper electrical and physical condition upon initial inspection, and verifying performance against specifications. Error diagnostics are supported by digital panel meters and LED indicators for mode status. Calibration involves setting voltage and current limits using front panel controls, with adjustments possible via remote programming. Board-level guidance includes checking for damage and verifying connections during installation. The unit features automatic overload protection and requires adequate ventilation during operation. For shipment, original packaging is recommended to prevent damage. The manual emphasizes the importance of correct initial setup and regular checks to maintain optimal performance.
Quick Issues Covered
- Diagnose power-up failures using front panel meters and indicators.
- Identify error codes related to voltage and current limit settings.
- Use schematics for circuit tracing and component verification.
Overview
The product is the Model 1791 High Current Regulated D.C. Power Supply, designed for bench or 19″ rack operation. It provides a well-regulated constant voltage/constant current supply, delivering 0-64V at 0-10 Amps. The manual covers general information, specifications, installation, operating instructions, and parts list & schematics.
Specifications
- OUTPUT VOLTAGE 0-64V DC continuously variable with coarse and fine voltage controls.
- LOAD CURRENT 0-10 Amp max., continuously variable with coarse and fine controls.
- CONSTANT VOLTAGE MODE REGULATION
- LINE Less than + 0.01% + 2mV for 410% change in line voltage.
- LOAD Less than + 0.01% + 2mV for load change from zero to full load.
- RIPPLE & NOISE Less than 1mV rms max.(20 Hz- 20 MHz)
- CONSTANT CURRENT MODE REGULATION
- LINE Less than + 0.05% +10mA for +10% change in line voltage.
- LOAD Less than 0.05% +10mA for change in output voltage from 0 volts to maximum output voltage.
- RIPPLE & NOISE Less than 3mA rms.
- OVERLOAD PROTECTION Automatic overload and short circuit protection.
- TRANSIENT RESPONSE 100usecs to within 10mV of set output voltage for load change from 10% to 90%.
- STABILITY :
- Total drift within 8 hours, after + 0.2% + 10mvV in constant voltage mode.
- warm up under constant line, + 0.5% + 10mA in constant current mode.
- load & temp.
- PANEL METERS Digital panel meters(marked V for voltmeter and A for ammeter) are provided with an accuracy of + 3 counts.
- MODE INDICATION Respective LED lights up when the unit is working in CV or CC mode.
- SET LIMIT! ON-OFF Push Switches for Limit ( V & A ) and output ON/OFF setting.
- OUTPUT CONTROLS Single turn coarse and fine voltage and current controls are provided on the front panel
- EXTERNAL PROGRAMMING Output voltage can be programmed by a variable – resistance of 20K
- OPERATING TEMPERATURE 0-40°C.
- INPUT VOLTAGE 120/230V AC, + 10% 47 – 63Hz single phase.
- DIMENSIONS 19"(W ) x 15.75"(D) x 5.24"(H).
- WEIGHT 55 Ibs.
Controls & Indicators
The front panel of the Model 1790 High Current Power Supply includes VOLTAGE and CURRENT controls for setting output limits, two meters for monitoring output voltage and current, load and remote sense terminals, and a push switch for selecting remote sensing mode. There is also an OUTPUT ON/OFF switch for connecting the power supply to the load, and a LIMIT switch for setting voltage and current limits when the output is not connected.
Installation / Setup
The installation highlights for the Model 1791 High Current Power Supply include the following key points:
1. Initial Inspection: Upon unpacking, inspect the unit for any transit damage and retain all packing materials until the inspection is complete. Notify carriers and authorized representatives if damage is found.
2. Physical Check: Ensure there are no broken knobs or connectors, and that the cabinet and panel surfaces are free from dents and scratches. Check that the meters are not scratched or cracked.
3. Electrical Check: Verify the unit against electrical specifications with an in-cabinet performance check to ensure proper operation.
4. Installation Data: The unit is ready for bench operation and requires connection to a rated power source (120V AC) for operation.
5. Location: Ensure sufficient space around the fan-cooled unit to avoid confined spaces or proximity to heat sources. The ambient temperature should be less than 40°C.
6. Rack Mounting: The unit can be rack-mounted using standard mounting screws and optional rack attachments.
7. Input Power Requirements: The unit operates continuously from a 120V or 230V AC 47 – 63Hz power source and is factory wired for 120V AC operation.
8. Repackaging for Shipment: Use the original packaging for safe shipment, and attach a tag specifying the owner and any observed faults with a brief description.
Operation
The 1791 High Current Regulated D.C. Power Supply can be used in both constant voltage and constant current modes. In constant voltage mode, the front panel VOLTAGE controls limit the output voltage, while in constant current mode, the CURRENT controls limit the output current. The unit automatically switches between these modes if limits are exceeded. Output voltage and current are monitored on front panel meters, and the supply can operate floating up to +300VDC above ground. The OUTPUT ON/OFF switch allows presetting voltage and current without load connection. Remote programming and sensing are available for voltage adjustments and regulation improvements, respectively.
Troubleshooting & Error Codes
Refer to the PDF for details.
Safety & Warnings
Refer to the PDF for details.
Download MANUAL Manual (PDF – 602.9 KB)
Bk-precision-1790-instruction manual: assists technicians in troubleshooting and calibrating the Bk-precision 1790 model.
- Brand: Bk-precision-1790-instruction
- Model: MANUAL
- Type: Manual
- File size: 602.9 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-1790-instruction MANUAL Overview
The Bk-precision-1790 is a versatile digital multimeter designed for precise electrical measurements in both professional and hobbyist environments. This compact and reliable device allows users to measure voltage, current, resistance, capacitance, and frequency with high accuracy, making it an essential tool for troubleshooting and testing electrical circuits.
Main Features and Specifications
- Measurement Functions: AC/DC Voltage, AC/DC Current, Resistance, Capacitance, Frequency, and Diode Testing
- Large backlit LCD display for easy reading in low-light conditions
- Auto-ranging capability to simplify measurement selection
- Data hold and relative measurement functions
- Overload protection on all ranges for user safety
- Compact and ergonomic design for comfortable handling
- Battery-powered with low battery indicator
Basic Usage and Operation Tips
Before taking any measurements, ensure the multimeter is set to the correct function and range. Connect the test leads securely to the appropriate input jacks. When measuring voltage or current, always start with the highest range to prevent damage to the device. Use the data hold feature to freeze the displayed reading for easier analysis. Always disconnect the test leads from the circuit before switching measurement modes.
Troubleshooting and Maintenance
If the multimeter does not 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 extreme temperatures or moisture. If readings appear inconsistent, verify the test leads are intact and properly connected. For persistent issues, consult the troubleshooting section of the manual or contact authorized service centers.
Safety Reminder
Always observe proper safety precautions when working with electrical circuits. Do not exceed the maximum input limits specified in the manual. Avoid measuring live circuits with damaged test leads or if the device shows signs of malfunction. Use the multimeter only as intended and keep it away from children. Proper use ensures your safety and prolongs the life of the instrument.