在设计制作光泵时,我制成了一个简便可靠的恒温电路.其控温精度为0.01℃. (一)工作原理在图1中,BG301为差分放大器,T_1和T_2(3DG27B×2)作电压放大和电流放大;T_3(3DG29B)作功率放大.电路的输入端可附加一个π型滤波器,以防止高频振荡干扰,C_0和C_1则分别用来防止低频和高频振荡. In the design and manufacture of optical pumps, I made a simple and reliable constant temperature circuit, the temperature control accuracy of 0.01 ° C. (A) works In Figure 1, BG301 for the differential amplifier, T_1 and T_2 (3DG27B × 2) for Voltage amplification and current amplification T_3 (3DG29B) for power amplification A π filter can be added to the input of the circuit to prevent high frequency oscillation interference, C_0 and C_1 are used to prevent low frequency and high frequency oscillation, respectively.