Emitter-Follower Transistor Application Explored

In this post we learn how to use a transistor emitter follower configuration in practical electronic circuits, we study this through a few different example application circuits. An emitter follower is one of the standard transistor configurations which is also referred to as common collector transistor configuration. Let’s try to first understand what’s an emitter … Read moreEmitter-Follower Transistor Application Explored

Calculating Capacitor Charge/Discharge Time using RC Constant

Capacitor charge and discharge periods is usually calculated through an RC constant called tau, expressed as the product of R and C, where C is the capacitance and R is the resistance parameter that may be in series or parallel with the capacitor C. It may be expressed as shown below: τ = R C … Read moreCalculating Capacitor Charge/Discharge Time using RC Constant

Transistor Stray pickup False Triggering Problem

The article explains how to make any BJT or mosfet based circuit free from stray signal pickup and false triggering by simply attaching a filter resistor or a capacitor across their base/emitter or gate/source terminals. The problem was raised by Mr.Henrik. Solving a Circuit Problem I have an issue I don’t understand. please check out … Read moreTransistor Stray pickup False Triggering Problem

How to Make a Zero Crossing Detector Circuit

Making a zero crossing detector circuit is actually very easy and it could be effectively applied for protecting sensitive electronic equipment against mains switch ON surges. A zero crossing detector circuit is mainly used for protecting electronic devices from switch ON surges by ensuring that during power switch ON the mains phase always “enters’ the … Read moreHow to Make a Zero Crossing Detector Circuit

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