The manual for the Hallicrafters Model PS-500A-AC power supply provides instructions for chassis removal, bias adjustment, and connection to the Model SR-400 transceiver, ensuring proper operation from a 117/234 volt AC source. It includes a repair parts list and warns about the presence of lethal high voltage, emphasizing caution during installation and checks.
Manual Overview
The Hallicrafters Model PS-500A-AC is a power supply designed for the SR-400 Transceiver, operating from a 117/234 volt AC source. It provides necessary voltages through a 12-pin power plug and includes a 3.2-ohm speaker. For troubleshooting, the manual details chassis removal by unscrewing the rear cover and bottom screws, disconnecting the speaker leads, and sliding the chassis out. The repair parts list includes various capacitors, diodes, resistors, and other components, with specific part numbers for replacements. Calibration involves adjusting the bias control (R206) on the power supply to maximum voltage before setting the transceiver’s BIAS ADJ. control. The schematic diagram offers board-level guidance, showing component placements and connections. High voltage warnings are emphasized for safety during installation and checks.
Quick Issues Covered
- Diagnose power-up failures with Model PS-500A-AC power supply.
- Adjust bias voltage using R206 for optimal transceiver performance.
- Trace circuits using the PS-500A-AC schematic for component issues.
Overview
Hallicrafters’ Model PS-500A-AC Power Supply is a complete, self-contained power unit designed to operate the Model SR-400 Transceiver from a nominal 117/234 volt AC source. It provides all necessary supply voltages through a 12-pin power plug and cable. The power supply can operate from a 105-volt to 125-volt, or 210-volt to 250-volt, 50/60 cycle AC source and includes a 3.2-ohm permanent-magnet type speaker. The manual covers chassis removal, bias adjustment, and includes a repair parts list.
Specifications
- AC power supply model: PS-500A-AC
- Designed for: Hallicrafters' Model SR-400 Transceiver
- Input voltage: 105-volt to 125-volt, or 210-volt to 250-volt AC
- Frequency: 50/60 cycle
- Connector: 12-pin power plug
- Speaker: 3.2-ohm permanent-magnet type
- Fuse: 5 Amperes, 125 Volts, 3 AG, Slow Blow
Controls & Indicators
Refer to the PDF for details.
Installation / Setup
Refer to the PDF for details.
Operation
Refer to the PDF for details.
Troubleshooting & Error Codes
Refer to the PDF for details.
Safety & Warnings
LETHAL HIGH VOLTAGE IS PRESENT WITHIN THIS EQUIPMENT, BE CAREFUL WHEN INSTALLING THE UNIT AND WHEN PERFORMING CHECKS.
Download BIAS Manual (PDF – 484.8 KB)
Hallicrafters PS-500A AC Power Supply Manual: Guide for troubleshooting and adjusting BIAS model. PDF size: 484.8 KB.
- Brand: Hallicrafters-ps-500a-ac-power-supply-with-adjustable
- Model: BIAS
- Type: Manual
- File size: 484.8 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
Hallicrafters PS-500A AC Power Supply with Adjustable BIAS – Overview
The Hallicrafters PS-500A is a reliable AC power supply designed to provide stable and adjustable bias voltage for various electronic devices and radio equipment. Known for its robust construction and precise voltage control, this power supply is ideal for hobbyists, technicians, and professionals working with vintage radios, amplifiers, and other electronic circuits requiring adjustable bias settings.
Main Features and Specifications
- Adjustable bias voltage output for fine-tuning electronic components
- Durable metal chassis with vintage Hallicrafters design
- AC power input compatible with standard mains voltage
- Clear analog meters for voltage and current monitoring
- Overload protection to prevent damage to connected equipment
- Compact size suitable for bench-top use
- Reliable transformer-based power supply for minimal noise and ripple
Basic Usage and Operation Tips
Before connecting the PS-500A, ensure the device is powered off and properly grounded. Use the adjustable bias control knob to set the desired voltage output according to your equipment's specifications. Monitor the output voltage and current using the built-in meters to avoid exceeding recommended limits. Always start with the lowest voltage setting and gradually increase to the required level. Allow the power supply to warm up for a few minutes to stabilize before use.
Troubleshooting and Maintenance
If the power supply fails to output voltage, first check the main fuse and replace if necessary. Inspect all connections for corrosion or loose contacts. Should the meters display erratic readings, recalibrate or consult the manual for meter servicing instructions. Regularly clean the exterior and ventilation openings to prevent dust buildup, which can cause overheating. Avoid operating the unit in excessively humid or dusty environments to prolong its lifespan.
Safety Reminder
Always handle the Hallicrafters PS-500A with care and disconnect it from the mains power before performing any maintenance. Avoid contact with internal components while the unit is powered to prevent electric shock. Use the power supply in a well-ventilated area and never bypass safety features or overload the device beyond its rated capacity.