• Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

Bypass capacitor

Status
Not open for further replies.

neo_star

New Member
should the value of the bypass capacitor be larger, if so how large.

can a ceramic capacitor with 0.01 µF act as a bypass capacitor.
 

solis365

New Member
depends on what you want to bypass, and what exactly is doing the bypassing. More details about your application?
 
Last edited:

neo_star

New Member
take a look at the following mixer circuit in the attachment

my teacher says that the last part [the part that i have boxed] is a filter.

but when i did my practicals i did not get any output in the CRO if those capacitors were present.

the output that i must get is the difference of the two frequencies Fx and Fy.

can it be explained.
 

Attachments

colin55

Well-Known Member
The amplitude at the output will depend on the frequency of the circuit and the value of the resistors.
 

JimB

Super Moderator
Most Helpful Member
my teacher says that the last part [the part that i have boxed] is a filter.
Correct, it is a low-pass filter.

but when i did my practicals i did not get any output in the CRO if those capacitors were present.

the output that i must get is the difference of the two frequencies Fx and Fy.
The output of the mixer will contain the frequencies:
Fx, Fy, Fx+Fy, Fx-Fy, and probably many others such as 2Fx-Fy, 2Fy-Fx etc.
The task of the filter is to remove everything except Fx-Fy which will be the lowest frequency in the output of the mixer, hence the use of a low-pass filter.

What you need to consider is, what frequencies were you using in your practicals?
What is the cutoff frequency of the low-pass filter?

JimB
 
Status
Not open for further replies.

Latest threads

EE World Online Articles

Loading
Top