E3640A Series: A Benchmark of Reliability and Practicality
Core Performance and Technical Features
Stable Output Performance and Dual-Channel Design
Offers single-channel or dual-channel (independent/series/parallel) output models (e.g., E3642A), with voltage/current combinations covering common requirements (e.g., 0-8V/0-5A, 0-20V/0-2.5A).
Utilizes linear regulation technology, providing extremely low output noise and ripple (typically <1 mVrms) for clean power to analog and digital circuits.
Excellent load and line regulation ensures highly stable output despite load or input voltage variations.
Basic Programming and Protection Functions
Supports programming of output voltage and current limits via rear-panel analog programming interfaces (0-5V or 0-10V corresponding to full scale).
Built-in Overvoltage Protection (OVP) and Overcurrent Protection (OCP) effectively safeguard both the power supply and connected equipment.
Some models include overtemperature protection.
Intuitive Local Operation and Monitoring
Clear LED digital display simultaneously shows set values (SET) and actual output values (OUT).
Front panel provides voltage/current adjustment knobs and an output switch for simple, direct operation.
Voltage/current monitor output terminals are available for external monitoring.
Reliable System Integration
Rugged chassis design suitable for continuous long-term operation in environments like laboratories and production lines.
Compatible with various Keysight (Agilent) system chassis and programming commands.
Typical Application Scenarios
Circuit Board and Module Testing: Provides stable operating power for prototype boards, embedded core boards, and functional modules.
Component Burn-in and Testing: Supplies power for long-term burn-in or parameter testing of low-power components (e.g., ICs, sensors).
Maintenance and Education: Serves as a general-purpose DC power supply in repair stations or university electronics laboratories.
Automated Test Systems: Integrated into simple automated test environments via analog programming interfaces.
Professional Services Ensuring Power Supply Quality
The output accuracy of linear power supplies drifts over time, and changes in internal components like reference voltage sources, error amplifiers, and regulators affect final output. Periodic calibration ensures accurate set values and reliable protection functions.
Shenzhen Bao'an District Shajing Fangfengrui Instrument & Equipment Business Department provides the following professional services for the E3640A series:
Output Accuracy Calibration: Calibrates the accuracy of output voltage settings, current limit settings, and actual readback values.
Ripple and Noise Measurement: Uses professional instruments to measure output ripple and noise, assessing whether it still meets low-noise application requirements.
Protection Function Verification: Verifies the accuracy and effectiveness of Overvoltage Protection (OVP) and Overcurrent Protection (OCP) trigger thresholds and responses.
Fault Diagnosis and Repair: Performs professional diagnosis and repair for common issues such as no output, unstable output voltage, display abnormalities, protection function failure, and fan malfunctions.
Conclusion
The Keysight E3640A series of programmable DC power supplies has established a lasting reputation in the field of basic power supply with its classic linear design, excellent output purity, and recognized reliability. Even with the widespread adoption of switching power supplies today, it remains valuable for specific applications sensitive to noise and demanding high stability.
Ensuring this reliable "energy cornerstone" continues to operate accurately is a prerequisite for the proper functioning of downstream circuits or equipment. By partnering with a professional service provider like Shenzhen Bao'an District Shajing Fangfengrui Instrument & Equipment Business Department, users can ensure that their E3640A series power supplies and other fundamental instruments maintain optimal working conditions, providing stable and clean power assurance for daily R&D, testing, and production.
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