Generally, the large ripple is caused by the output voltage. The transformer power is insufficient and the filter storage power is insufficient. However, the peak and valley of AC will cause the current on the diode used by the simple regulator power supply to change, and the voltage of the diode will be different under different current conditions, so it will lead to the change of the output voltage.

 

There is also a large internal output resistance, when the load changes, the current between the tube and the emitter changes to adjust the emitter current to stabilize the voltage. The emitter current is balanced with the load output voltage and the emitter differential pressure. Large loads can have voltage drops, like too much internal resistance, but really just too much load effect.

Excessive internal resistance method:

1. Increase the power of the transformer to prevent the load and output voltage from falling.

2. The output voltage of the transformer can be increased appropriately.

3. Increase the filtering capacitor before voltage stabilization.

4, adjust the pipe base capacitance, will play the role of source filtering.

5. Appropriately increase the filter capacitor after voltage stabilization.