论文部分内容阅读
Electronic Design 22(22)一期介绍了一种用于测试发光二极管数字显示器和单个管子的简易装置。 测试装置中装两个发光二极管,方向相反并联起来。再串联一个限流电阻然后接到一个变压器次级线圈6.3V的电线上。当测试装置输出端短接或把低阻通路放到输出端时。两个管子都亮。当输出端与一发光二极管阳极上的正的引线接通时,该正二极管就与所测的发光管一道亮。当把负的引线接到一发光二极管的阳极上时,该负发光二极管的
Electronic Design 22 (22) Phase I introduces a simple device for testing LED digital displays and individual tubes. Test device installed two light-emitting diodes, the opposite direction parallel. Then a current limiting resistor in series and then connected to a transformer 6.3V secondary coil on the wire. When the output of the test device is shorted or the low resistance path to the output. Both tubes are bright. When the output is connected to the positive lead on the anode of a light-emitting diode, the positive diode lights up with the measured light-emitting diode. When a negative lead is connected to the anode of a light emitting diode, the negative light emitting diode