The manual for the B&K Precision Model 1795 High Current Power Supply provides detailed instructions on installation, operation, and troubleshooting, including setup for constant voltage and current modes, remote programming, and overload protection. It also includes specifications, initial inspection guidelines, and procedures for electrical checks and rack mounting, ensuring proper operation and maintenance of the power supply.
Manual Overview
The Bk Model 1795 High Current Power Supply manual provides detailed instructions for troubleshooting, diagnostics, calibration, and adjustments. The power supply offers a regulated output of 0-64V at 0-15A, with automatic crossover between constant voltage and constant current modes. Troubleshooting involves checking for physical and electrical integrity upon unpacking and verifying performance against specifications. Error diagnostics are facilitated by digital panel meters with an accuracy of ±3 counts, and mode indication LEDs for CV and CC modes. Calibration involves setting voltage and current limits using front panel potentiometers, with the option for remote programming via a 5K potentiometer. For board-level guidance, the manual includes a tap selector board for input voltage adjustments, particularly for switching between 120V and 230V AC operations. The power supply features automatic overload and short circuit protection, ensuring safe operation. Installation requires adequate ventilation and proper input power connection, with provisions for both bench and rack mounting. The manual emphasizes the importance of using original packaging for safe shipment and includes a warranty covering defects for two years.
Quick Issues Covered
- Diagnose power-up failures with initial inspection and electrical checks.
- Adjust voltage/current limits using front panel potentiometers.
- Trace circuits with detailed schematics and circuit diagrams.
Overview
The 1795 High Current Regulated D.C. Power Supply is a solid-state device suitable for bench or rack operation. It provides a well-regulated constant voltage/constant current output, delivering 0-64V at 0-15 Amps, adjustable throughout the range. The unit can automatically switch between constant voltage and current modes. It features front panel meters for monitoring, load and remote sense terminals, and can operate floating up to +300VDC above ground. The manual covers general information, specifications, installation, operating instructions, service instructions, parts list, schematics, and circuit diagrams.
Specifications
- OUTPUT VOLTAGE 0-64V DC continuously variable with coarse and fine voltage controls.
- LOAD CURRENT 0-15 Amp max., continuously variable with coarse and fine controls.
- CONSTANT VOLTAGE MODE REGULATION LINE Less than + 0.01% + 2mV for 10% 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 6mA 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% + 10mV 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 5K ( Pot )
- 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 46 lbs. Net.
Controls & Indicators
The front panel of the Model 1795 High Current Power Supply includes the following controls and indicators:
1. Voltage Controls: These are used to limit the output voltage when the supply is used as a constant voltage source.
2. Current Controls: These are used to limit the output current when the supply is used as a constant current source.
3. Meters: There are two front panel meters that continuously monitor output voltage and current.
4. Load Terminals and Remote Sense Terminals: Provided on the front panel for connections.
5. Output On/Off Switch: Allows the output voltage and current to be preset without connecting the power supply to the load. Pressing the OUTPUT ON switch connects the output to the load.
6. Limit Switch: Allows setting of voltage and current limits when the output is not connected to the load.
7. Remote Sensing Switch: A push switch on the front panel selects the remote sensing mode to eliminate voltage drop in the load leads.
8. Mode Indication LEDs: Indicate whether the unit is operating in constant voltage (CV) or constant current (CC) mode.
9. Coarse and Fine Controls: Single turn coarse and fine voltage and current controls are provided for adjustments.
Installation / Setup
The installation of the Model 1795 High Current Power Supply involves several key steps. Upon unpacking, it is important to inspect the unit for any transit damage and retain the packing material until the inspection is complete. Physical checks should ensure there are no broken knobs or connectors, and that the cabinet and panel surfaces are free from dents and scratches. An electrical check should confirm the unit meets its electrical specifications, and an in-cabinet performance check will verify proper operation.
The unit is shipped ready for bench operation and only requires connection to a rated power source of 120V AC for operation. It is fan-cooled, so sufficient space should be maintained around it to prevent overheating, with the ambient temperature kept below 40°C. The unit can also be rack-mounted using standard screws and optional rack attachments.
The power supply can operate continuously from a 120V or 230V AC power source, and is factory-wired for 120V AC. For 230V operation, the shorting links on the Tap Selector board must be adjusted, and the input varistor should be replaced with a 20D 361K or equivalent. For safe shipment, it is recommended to use the original packaging material, and a tag specifying the owner and any observed faults should be attached to the unit.
Operation
The manual provides detailed instructions for operating the Model 1795 High Current Power Supply. It describes the use of the power supply in both constant voltage and constant current modes. The front panel controls allow for continuous adjustment of output voltage and current, and the unit automatically switches between modes if limits are exceeded. The output can be preset without a load, and remote programming and sensing options are available.
Troubleshooting & Error Codes
Refer to the PDF for details.
Safety & Warnings
Refer to the PDF for details.
Download MANUAL Manual (PDF – 106.2 KB)
Bk-precision-1795-instruction manual: assists technicians in troubleshooting and calibrating the Bk-precision 1795 model.
- Brand: Bk-precision-1795-instruction
- Model: MANUAL
- Type: Manual
- File size: 106.2 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-1795-instruction MANUAL Overview
The Bk-precision-1795 is a versatile digital multimeter designed for accurate electrical measurements in both professional and hobbyist environments. This device provides reliable readings of voltage, current, resistance, and continuity, making it an essential tool for troubleshooting and testing electronic circuits, electrical installations, and various components.
Main Features and Specifications
- Measurement Functions: AC/DC Voltage, AC/DC Current, Resistance, Continuity, Diode Test
- Display: Large backlit LCD for easy reading in low light conditions
- Auto-ranging capability for quick and accurate measurements
- Data Hold function to freeze readings for convenience
- Overload protection to safeguard the device and user
- Battery-powered with low battery indicator
- Compact and ergonomic design for comfortable handling
Basic Usage and Operation Tips
Before using the Bk-precision-1795, ensure the device is powered on and the correct measurement mode is selected using the rotary dial. Connect the test leads to the appropriate input jacks, then carefully touch the test probes to the circuit or component under test. For accurate readings, avoid touching the metal parts of the probes during measurement. Use the data hold button to freeze the displayed value if needed. Always start with the highest range if unsure about the expected measurement to prevent damage.
Troubleshooting and Maintenance
If the device does not power on, check the battery and replace it if necessary. Ensure the test leads are properly connected and not damaged. In case of erratic or inconsistent readings, verify the test probes and connections, and reset the device by turning it off and on again. Regularly clean the exterior with a soft, dry cloth and avoid exposure to moisture or extreme temperatures. Store the multimeter in a protective case when not in use to prolong its lifespan.
Safety Reminder
Always observe proper safety precautions when working with electrical equipment. Do not exceed the maximum input limits specified in the manual. Avoid measuring live circuits if you are not trained or confident in electrical safety procedures. Use insulated test leads and wear appropriate personal protective equipment to reduce the risk of electric shock or injury.