{"product_id":"general-electric-5u4gb-rectifier-vacuum-tube","title":"General Electric 5U4GB Rectifier Vacuum Tube","description":"\u003cdiv\u003e\u003cp\u003eThe General Electric 5U4GB functions as a full-wave gas-filled rectifier vacuum tube designed to stabilize direct current output in specialized electronic power supplies. Operating with a series-string heater rating of 5 volts at 2.75 amperes, this octal-base component connects directly to circuits utilizing standard filament wiring configurations found in mid-20th century audio and communication hardware without complex adapter requirements. It remains electrically compatible with replacement units such as the 5AS4A equivalent, facilitating targeted repairs for original schematics without necessitating transformer or socket modifications during installation. Capable of handling a maximum average plate rectified current of 130 milliamperes and sustaining peak inverse voltages up to 630 volts, this vacuum tube provides stable electrical operation for demanding analog signal processing loads. Technicians and restorers frequently install the 5U4GB in guitar amplifier power stages, hi-fidelity preamplifiers, and test equipment to ensure proper biasing and power delivery throughout the lifespan of the system, supporting essential rectification duties in legacy designs.\u003c\/p\u003e\u003c\/div\u003e","brand":"GE","offers":[{"title":"Used Surplus - Excellent Condition","offer_id":51691435524398,"sku":null,"price":145.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/0818\/1038\/files\/Ebay_website_image_6d2e9cad-a3d1-4ac8-9249-a12bcbecde17.jpg?v=1769888528","url":"https:\/\/plgautomation.com\/products\/general-electric-5u4gb-rectifier-vacuum-tube","provider":"PLG Automation ","version":"1.0","type":"link"}