EEVblog #643 - Mailbag

Mailbag Monday Spoilers: Dual input power selector circuit, the Pow-OR: Casio FX-7000G the world’s first graphing scientific calculator, circa 1985. A 1989 vintage analog ohmeter. Teardown of a Clipsal 32E450UDM 450W electronic dimming module. Forum: EEVblog Main Web Site: EEVblog Amazon Store: Donations: Projects: Electronics Info Wiki: Теги: mailbag,teardown,Casio Fx-7000G (Computing Platform),calculator,pow-or,voltage selection,raspberry pi