A20112 Power Supply Schematic

A20112 (Manufactured by Namco/Delta Electronics) Application: Arcade Hardware (Namco System 246 / 256) Input Voltage: 100V – 240V AC (Auto-switching) Output: +12V, +5V, +3.3V (DC)

If you are assembling a supply based on this schematic, consider these best practices: a20112 power supply schematic

The following report details the functional architecture, component analysis, and troubleshooting guidelines based on the known design topology of this unit. a20112 power supply schematic

If your A20112 outputs 9V or 15V, check R24 and R25 for drift or cold solder. a20112 power supply schematic

After the PFC stage, the high-voltage DC is stepped down to usable levels (like 12V or 5V).

the rated output capacitor voltage (usually 16V for the A20112). Doing so will cause capacitor explosion.