振动仪用功率放大器及保护电路的研制

The development of power amplifier and protective circuit for the vibrator

根据JQZ—2型电磁式振动仪的特点和要求,设计制作了一个功率放大器和保护电路。功率放大器由集成块、电阻、电容等组成。具有良好的低频响应,保护电路能有效地保护振动仪和功率放大器。该系统在振动对生物体内物质的耗散作用的研究实验中使用,结果表明,其性能稳定,安全可靠,完全能满足实验要求。

According to the characteristics and requirements of JQZ-2type electromagnetic vibrator, a power amplifier and a protective circuit were designed. The power amplifier is composed of IC, Rand C, etc, which has a better low-frequency response characteristics. The vibrator and the power amplifier can be protected effectively by the protective circuit. The system was used in the expiriment which understood the effects of vibration on the material dissipation in the organism. The results showde that it had advantages such as stability of performance, safety and reliability, etc.The system satisfied the requirements of the experiment perfectly.