| 摘要 |
PURPOSE:To enable to keep the temperature in the amplifier within a given range, by automatically selecting the power supply voltage through the detection of the temperature in the amplifier. CONSTITUTION:The output of the power supply transformer 1 is fed to the power amplifier 8 through the selection of high voltage or low voltage with the switches 2 and 3. The temperature of the amplifier 8 is detected with the temperature detection element 12 and when the temperature exceeds a given temperature, the supply voltage of the circuit 1 is automatically selected from high to low with the switches 2 and 3. Thus, the temperature in the amplifier 8 can be kept within a given temperature range. |
