Digital Electronics

A tunnel diode is a diode that exhibits a negative differential impedance region in its I-V characteristic due to quantum tunneling effects. That is, a -sloped region as shown by red colored region in the figure below. It’s a diode, a kind of semiconductor device usually with two terminals. Unlike a regular pn diode, Tunnel … Read more What is Tunnel Diode?

Twisting the cables is done to remove the electromagnetic interference from the wires. When a signal is transmitted through the cable it is in the form of current. This flow of current produces an electromagnetic field of interference around it and can generate noise effects in the surrounding cables. One pair can induce cross-talk in … Read more How Twisting the Cables Reduce the Interference?

Enhancement Mode MOSFET: For an enhancement MOSFET, the channel does not initially exist. It only comes into existence once a voltage greater than Vth, threshold voltage is applied. For example, in an n-channel MOSFET, the substrate is made of p-type material. Consider the source to be at a reference ground potential of 0 Volts. For … Read more Difference between Depletion-mode MOSFET and Enhancement-mode MOSFET

Triggering basically means switching. The way in which a switch or an event is triggered can be different, based on the user’s requirements. Edge and Level Triggering, are both common terms when using sequential circuits like Flip Flops triggered by a clock signal. Essentially, this is how a clock signal looks like,   LEVEL TRIGGERING: … Read more Edge Triggering and Level Triggering