resistors on the tube pins). Check these first if the main fuse keeps blowing. Class A tube amp schematic that matches this 14W power profile for comparison?
, lock the voltage at a precise, stable level regardless of load changes. The Investigation: Following the Schematic 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. resistors on the tube pins)
Because the A20112 uses a TL431 feedback network, you can modify the output voltage safely. lock the voltage at a precise
No. The feedback loop will cause cross-regulation oscillations. If you need more current, replace the Schottky diode (e.g., upgrade from 3A to 5A part) and the transformer is usually the bottleneck.