Blog Archives

Switch Mode Laser Diode Driver Design

Switch Mode Laser Diode Driver Approximately 20 years ago, as industry was starting to replace linear designs with switch mode power supplies to achieve smaller size and higher efficiency, Hughes Aircraft Company in 1994 disclosed a resonant buck converter to provide

Posted in Laser Electronics, Technical Note

Linear Laser Diode Driver Design

Linear Laser Diode Driver Solution The AMI Model 778 Laser Diode Driver was an early example of the simple linear design approach. This driver and the current version, AMI Model 779A, has been available for 25 years.  In such a design,

Posted in Laser Electronics, Technical Note

OSCILLATION IN AMPLIFIERS

OSCILLATION IN AMPLIFIERS Most amplifiers work without problems, but in some cases oscillations may occur with high frequencies/high gains and/or poor layout. The first step is to measure the frequency and amplitude of the oscillation. Use the internal triggering of

Posted in Sensors and Amplifiers, Technical Note

HOW TO MEASURE NOISE

Specifically How to Measure Noise when using AMI’s transimpedance and voltage amplifiers VERIFICATION When determining how to measure noise one question that is frequently asked is how to verify the noise performance of voltage and current amplifiers.  This note suggests

Posted in Sensors and Amplifiers, Technical Note

Design of Capacitor Charging Power Supplies

Introduction Design of Capacitor Charging Power Supplies:  In order to power laser flashlamps, pulse forming networks, and other energy storage capacitor applications, the capacitor is charged up in voltage, then regulated. This creates an unusual and different situation from conventional

Posted in Laser Electronics, Technical Note

Transimpedance Amplifier Selection

Transimpedance Amplifier Selection Guide AMI designs and manufactures a range of Transimpedance Amplifiers for OEM, medical and research applications primarily for use with photodetectors. AMI’s amplifiers combine low noise, high gain, large dynamic range, and small package size. The key

Posted in Sensors and Amplifiers, Technical Note Tagged with: , ,

Featured Products

Model 766

The Model 766 Pulsed Laser Diode Driver offers user-adjustable pulse width capability as low as 150ps up to 1ns for driving laser diode modules at output currents up to 1.1A. The driver circuitry includes a TEC controller and operates from a single 5V power source.