Measure DC offset, Hum, DBs gain, Oscillation

[walters]

How do i measure DC offset?

Where is DC offset mostly at on a analog or digital Circuit?

How do i measure DB gain?

How do i measure DB?

How do i measure Oscillation?

How do i measure Hum?

 

[echo47]

Uh-oh, your questions sound like homework.
Please convince us that we won't be doing your homework while you spend the weekend at the beach!

 

[walters]

No not homework i just want to know how to do this basic bench testing
for any kind of circuit so i can know how to measure circuits in general
please

 

[tjr]

generally offset occur in both anlog and digital circuits.
u can measure osscillations and db gain using cro

 

[electronics_kumar]

How do i measure DC offset?

Where is DC offset mostly at on a analog or digital Circuit?

How do i measure DB gain?

How do i measure DB?

How do i measure Oscillation?

How do i measure Hum?

for measuring DC offset,,give zero input and find output...that is dc offset...
it is due to mismatching between any two similiar stations

for measuring dB i think there exists no such device to measure it directly.....only way is measuring it by ordinary linear scale and then converting it in dB scale

for oscillation measurements,CRO is the answer

 

[Andrew8611]

for measure DC offset you can just see your output signal and measure its medium point, that's the DC offset, DC offset is mostly found on analog circuit because on digital ones you just work with ones and zeros and the offset is often small, so it can't change the zero value for another one.
To measure DB gain is just obtain the gain and apply the formula
Gain(db)=20*log(Gain(V/V))

 

[analogocean]

DC offset is mostly in analog circuits due to various mismatches that might occur. You can measure offset by connecting both the input terminals to ground and measuring the output voltage.

u can measure gain either by sweeping frequecy on CRO. If you are not interested in the pole location, then you can sweep input DC differentially and measure the slope

 

[raybo]

DC offset is a voltagethat with 0 input will show up at the output of an amp.
oscillation is something that cannot be measured with a ac meter bcause of hi freq. must use an oscilloscope
DB is a measure of a gain or a loss in volts using logarithm A=100=20Db of course it can be applied to modulation, power, and other ratios.