许多液压元件均需做冲击试验,有的要求冲击十万次之多。这不仅是对液压元件的严峻考验,对电器控制元件也提出了严洛要求。过去所用的继电器控制线路因使用寿命短、噪声大、跟踪速度慢、线路复杂、维修困难,并在切换电源时,对测试仪表干扰大,甚至使其它电子控制线路不能正常工作。为此我们设计了一无触点冲击试验线路,经实践考核,性能良好,工作可靠,造价降低,完全克服了上述缺点。其工作原理如下: 由5G14C等元件组成稳压电源,电压调 Many hydraulic components are required to do impact testing, and some require as many as 100,000 impact. This is not only a severe test of hydraulic components, electrical control components also put forward a strict request. Relay control circuit used in the past because of short life, high noise, slow tracking, complex lines, maintenance difficulties, and switching power supply, the test instrument interference, or even to other electronic control circuit does not work. To this end, we designed a non-contact impact test circuit, the practice test, good performance, reliable work, lower costs, completely overcome the above shortcomings. Its working principle is as follows: By 5G14C components such as power supply, voltage regulation