| 摘要 |
<p>In order to reliably prevent breakage of an FET due to an overcurrent, this high output power amplifier using a depression-type FET is provided with: a drain voltage supply unit (120, 220, 320), which generates a positive voltage to be applied to a drain terminal of the depression-type FET; and a gate bias voltage supply unit (130, 230, 330), which generates a negative voltage to be applied to a gate terminal of the depression-type FET. The drain voltage supply unit uses an external commercial power supply as a power supply, and the gate bias voltage supply unit uses a battery as a power supply.</p> |
