Keithley 2281S Power Supply Repair

Keithley Instruments, part of Tektronix, is renowned for its high-precision electrical and electronic test and measurement equipment. Keithley products are widely used in research, development, and production testing across various industries, including semiconductors, telecommunications, and general electronics. Here’s an overview of key Keithley product categories and their functionalities:

1. Source Measure Units (SMUs)

Source Measure Units

• Features: Combines a precision power source and measurement functions in one instrument.
• Popular Models:
  • Keithley 2400 Series: General-purpose SMUs suitable for a wide range of applications.
  • Keithley 2600B Series: High-performance SMUs with advanced features for complex measurements.
• Applications: I-V characterization, semiconductor testing, material research, and device testing.

2. Digital Multimeters (DMMs)

Digital Multimeters

• Features: High-accuracy instruments for measuring voltage, current, resistance, and other electrical parameters.
• Popular Models:
  • Keithley 2000 Series: 6½-digit multimeters known for precision and reliability.
  • Keithley DMM7510: 7½-digit graphical sampling multimeter with advanced measurement capabilities.
• Applications: Electronic device testing, circuit verification, and calibration laboratories.

3. Data Acquisition Systems

Data Acquisition Systems

• Features: Systems for capturing and logging multiple channels of data simultaneously.
• Popular Models:
  • Keithley DAQ6510: Data acquisition and logging multimeter system with a touchscreen interface.
  • Keithley 3706A System Switch/Multimeter: High-density, multi-channel data acquisition system.
• Applications: Environmental monitoring, product testing, and industrial automation.

4. Electrometers and Picoammeters

Electrometers

• Features: Ultra-sensitive instruments for measuring low-level currents, voltages, resistances, and charges.
• Popular Models:
  • Keithley 6517B: High-resistance/low-current electrometer with exceptional sensitivity.
• Applications: Material testing, insulation resistance measurement, and photodiode testing.

Picoammeters

• Features: Specialized devices for measuring extremely low currents.
• Popular Models:
  • Keithley 6485: Low-cost, high-performance picoammeter.
  • Keithley 6487: Picoammeter/voltage source for more complex applications.
• Applications: Nanoampere-level current measurements, leakage current testing, and low-current device testing.

5. Parametric Test Systems

Parametric Test Systems

• Features: Integrated systems for performing parametric tests on semiconductor devices.
• Popular Models:
  • Keithley S530 Series: Parametric test systems for high-throughput semiconductor testing.
• Applications: Semiconductor device characterization, process monitoring, and quality control.

6. Switching and Control

Switching Systems

• Features: Solutions for automating test setups and expanding the capability of measurement instruments.
• Popular Models:
  • Keithley 7001 Switch Mainframe: Modular switching system with a wide range of switch cards.
  • Keithley 7700 Series: Multiplexers and matrix switch modules for flexible signal routing.
• Applications: Automated testing, signal routing, and multiplexing.

7. Low Level Measurements

Low-Level Measurement Instruments

• Features: Instruments designed for precise low-level measurements of voltage, current, and resistance.
• Popular Models:
  • Keithley 2182A: Nanovoltmeter for low-level voltage measurements.
  • Keithley 6220/6221: Precision current sources for generating low-level currents.
• Applications: Research and development, low-noise measurements, and sensor testing.

8. Pulse and Arbitrary Waveform Generators

Pulse and Arbitrary Waveform Generators

• Features: Devices for generating precise pulses and complex waveforms.
• Popular Models:
  • Keithley 3390: Arbitrary waveform/function generator with high performance and flexibility.
• Applications: Signal generation, component testing, and system stimulation.

Conclusion

Keithley Instruments provides a comprehensive range of high-precision test and measurement solutions designed to meet the rigorous demands of various industries. Their products, including source measure units, digital multimeters, data acquisition systems, electrometers, picoammeters, parametric test systems, switching systems, low-level measurement instruments, and waveform generators, are known for their accuracy, reliability, and advanced capabilities. These tools are essential for research and development, quality assurance, production testing, and calibration across fields such as electronics, semiconductors, telecommunications, and materials science. Keithley’s innovative solutions help engineers and scientists achieve precise measurements and maintain the highest standards of quality and performance in their work.