Adp-160er Schematic [hot] -

The AC input first passes through a fuse, varistor (for surge protection), and an EMI filter. It is then rectified by a bridge rectifier into high-voltage DC (approx. 300V–400V).

Failure Mode: If the PWM IC’s startup resistor (usually 150kΩ to 470kΩ) fails open, the IC never receives VCC and the adapter remains dead. Adp-160er Schematic

The "brain" of the primary side that regulates the switching frequency. 3. Secondary Side (DC Outputs) The AC input first passes through a fuse,