Marubun Corporation to Host Free Online "LTspice Hands-on Seminar (Operational Amplifier Edition)" on April 28, 2026

Marubun Corporation (Headquarters: Chuo-ku, Tokyo; Representative Director, President & CEO: Hirofumi Horikoshi), an electronics trading company, will host a free online seminar on Tuesday, April 28, 2026, to teach methods for verifying operational amplifier stability and noise characteristics using LTspice. The seminar will utilize "LTspice," an analog circuit simulator provided by Analog Devices. Focusing on the general-purpose operational amplifier AD8691, participants will learn to confirm open-loop gain (AOL) and gain-bandwidth product (GBW), as well as practical analysis techniques and improvement measures for common analog design challenges like stability (phase margin) and noise through simulation. This training aims to help attendees acquire LTspice analysis skills, improve development efficiency, and enhance quality through design-stage verification and countermeasures. The seminar will take place from 14:00 to 15:00 JST and will be delivered as a web seminar via Zoom. Participants are requested to install LTspice from the Analog Devices website and download circuit diagrams in advance. The content of this seminar is the same as a webinar held on March 3. Marubun Corporation, founded in 1844 and established in 1947, is an electronics trading company globally expanding its business in the electronics market. It operates through three segments: Device Business (semiconductors, electronic components), System Business (electronic equipment sales/maintenance), and Entrepreneur Business (ICT, robotics solutions). The company's purpose is "to contribute to the realization of a better future through technology."