54-77

549-6711 Vintage plate power transformer manufactured for Heath Company - The Heathkit 54-77 is the official manufacturer part number for a vintage plate power transformer manufactured for Heath Company. It serves as the primary high-voltage transformer responsible for delivering the main B+ voltage inside specialized electronic kit gear.Primary ApplicationThis specific component was designed for the Heathkit IP-32 Variable Regulated Power Supply, a popular bench instrument used by technicians and hobbyists to develop and test tube-based circuitry.The transformer works in tandem with a secondary filament transformer (Heathkit part number 54-76) inside the unit.Associated SpecificationsWhile the internal winding metrics of the standalone 54-77 part number are proprietary to the vintage build, it directly supplies the core architecture required to meet the Heathkit IP-32 device specifications:Input Power Requirements: 105 to 125 volts AC, 50/60 Hz (150 watts maximum consumption)Regulated B+ Output Range: 0 to 400 volts DC regulated at 0–100 mA continuousBias Output Voltage Range: 0 to -100 volts DC at 1 mAVariants54-77: Standard 110V/117V AC domestic input variant.54-77-24 / 54X-77: Export or modified versions designed to support dual-voltage configurations (e.g., the IP-32E international models).