Digital Electronics - Logic Families and Their Characteristics - Discussion
Discussion Forum : Logic Families and Their Characteristics - General Questions (Q.No. 13)
13.
Why is a decoupling capacitor needed for TTL ICs and where should it be connected?
Discussion:
2 comments Page 1 of 1.
Bhargav said:
9 years ago
Coupling capacitors are used to remove DC either at the input or at the output, whereas decoupling capacitors are used to reduce noise.
As noise is generated when the power supply is turned on (Noise acts as input in oscillators). It should be connected b/w supply and ground.
As noise is generated when the power supply is turned on (Noise acts as input in oscillators). It should be connected b/w supply and ground.
KIRAN V said:
5 years ago
A coupling capacitor is a capacitor which is used to couple or link together only the AC signal from one circuit element to another. The capacitor blocks the DC signal from entering the second element and, thus, only passes the AC signal.
A decoupling capacitor is a capacitor used to decouple one part of an electrical network (circuit) from another. Noise caused by other circuit elements is shunted through the capacitor, reducing the effect it has on the rest of the circuit.
A decoupling capacitor is a capacitor used to decouple one part of an electrical network (circuit) from another. Noise caused by other circuit elements is shunted through the capacitor, reducing the effect it has on the rest of the circuit.
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