EEssential

 A foldable LED lamp that is powered by USB costs as little as $3-4.  The overall design seems relatively pleasing; the foldable and adjusta...

 Here we derive the source impedance of the Howland current pump.  The ideal current source impedance is infinity.  The Howland current pump...

 As an application example, the data sheet of a shunt voltage reference presents an 1mA precision current source as shown here,  Normally, t...

 The two types of flash memory devices, NAND and NOR, are familiar to people in tech.  Most people understand the difference between the two...

 VAVA 7-in-1 USB C hub VA-UC017,  3x USB 3.0 5Gbps USB A ports, SD/uSD card slots, HDMI, PD charging port 100W max.  $25, 100x40x13mm, 60g (...

Does the bandgap reference really have anything to do with the silicon bandgap voltage? The basic idea of the bandgap reference is to o...

A logarithmic amplifier is based on the exponential relationship between the collector current and the base-emitter voltage.  It is also an ...