Antminer T21 BHB68701 hash board 19V boost circuit

This technical training course focuses on the 19V boost converter system in the Antminer T21 BHB68701 hashboard. We examine how the U206 boost controller chip generates pulsed signals to drive inductor L1, creating a superimposed voltage output. The course details the dual-path voltage design input 16V combines with boosted pulses through rectifier diode D4, producing s 19V output. Learn the feedback mechanism using three series resistors for voltage stabilization, and follow hands-on measurement procedures for testing boost voltage at EC19 and regulated output at U118. This knowledge is crucial for diagnosing common boost circuit failures including chip malfunctions, inductor damage, and output voltage instability in advanced mining repair scenarios.

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