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Electronic Basics

How to Test a Transistor using Multimeter

S Bharadwaj Reddy
An ohmmeter can be used to check the state of a transistor i.e., whether the transistor is good or not. We know that base-emitter junction of a transistor is forward...

How to Identify the Transistor Terminals

S Bharadwaj Reddy
There are three leads in a transistor viz. collector, emitter and base. When a transistor is to be connected in a circuit, it is necessary to know which terminal is...

What is a Fuse ?

S Bharadwaj Reddy
1. What is a fuse? The fuse is an electric element protecting electric devices. It is commonly connected with a circuit in series, and when fault current increases to a...

Power Supply Circuit Fault Analysis

S Bharadwaj Reddy
In some cases, after isolating a fault to a particular circuit, it may be necessary to isolate the problem to a single component in the circuit. In this event, you have...

Basics of Voltage Regulator

S Bharadwaj Reddy
Voltage Regulator The 78XX series of linear voltage regulators provide positive fixed output voltages for a range of values. The last two digits in the part number indicate the output...

How to Test a Diode using Multimeter

S Bharadwaj Reddy
A multimeter can be used as a fast and simple way to check a diode out of the circuit. A good diode will show an extremely high resistance (ideally an open)...

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