让我们看看如何有效地将普通555计时器的输出灌(sink)电流增加一倍。xMLednc 从图1的框图(取自ST的TS555低功耗单CMOS计时器的数据表)中，我们可以看到放电引脚(pin7)与输出引脚(pin3)重复。实际上，它们只同时处于“低”(Low)状态。而在“高”(High)状态下，输出引脚 ...

Longtime contributor Bob Meister from Hamden, Conn., writes in response to Tom Osenkowsky’s recent contribution with respect to equivalent series resistance (ESR) and the Sencore LC-75 Z-Meter being ...

As electrolytic capacitors age, their internal resistance, also known as “equivalent series resistance” (ESR), gradually increases. This can eventually lead to equipment failure. Using this design, ...

Our recent discussion about checking capacitors for equivalent series resistance continues with tips from two engineers with plenty of field experience. The first is from engineer Ed Treese. Ed writes ...

Smart Tweezers ST5S-BT is based on the popular ST-5S model of Smart Tweezers; this model offers the most features and functions as well as a basic accuracy of 0.2%. The Bluetooth enabled model can ...