11 Threads found on edaboard.com: Measure Differential Voltage Gain
i must measure ac voltage output of H-bridge inverter by INA118.
the VDC of H-bridge is about 24v. so the output voltage vary between approximately +24v and -24v.
the output of INA118 is connected to ADC of micro that its supply is 3.3 volt.
the gain of INA118 can be changed between 1 to 10,000.
so how can i (...)
Power Electronics :: 03-14-2015 12:54 :: zizi110 :: Replies: 3 :: Views: 203
The shown differential amplifiers have a gain of 1, that means the differential voltage magnitude is kept. I don't know how you are measuring input voltage, you should measure the differential voltage.
I don't see however, how how you would get a (...)
Analog Circuit Design :: 08-13-2012 04:02 :: FvM :: Replies: 5 :: Views: 2110
hello sir, i want to make a circuit that measure negative voltage of battery.i am using pic adc to measure this voltage, but does not read negative voltage. so i have convert this negative to positive voltage.
1. i don't have negative voltage on the system,to (...)
Hobby Circuits and Small Projects Problems :: 09-16-2011 04:50 :: zeroskj1988 :: Replies: 5 :: Views: 1520
can someone help me how to find gain of an differential amplifier in cadence.. i mean what are going to be my virtuso parameters.. and how to plot graph, and how to measure gain ??
Analog Circuit Design :: 04-07-2011 02:01 :: srchan :: Replies: 3 :: Views: 1060
Connect it as unit-gain feedback buffer to measure input offset.
Analog IC Design and Layout :: 02-07-2011 00:59 :: leo_o2 :: Replies: 2 :: Views: 787
i think just do DC, and take the derivative of the output.
BTW: why don't you measure the peak-to-peak swing instead of the gain? you can also plot the swing versus time.
Analog IC Design and Layout :: 07-11-2010 22:59 :: prcken :: Replies: 1 :: Views: 713
measure U1 with one pin, then measure U2 with another pin and perform calculation in PIC: U1 - U2 or U2-U1, dependig which way do you want/need it ..
Microcontrollers :: 06-16-2010 02:15 :: IanP :: Replies: 4 :: Views: 1609
With +/-12V supply try to connect both inputs through (1kΩ) resistors to 0V and measure voltage on input pins ..
Also, do you have any input protection in place?
Analog Circuit Design :: 01-24-2007 20:07 :: IanP :: Replies: 4 :: Views: 811
Put 0.5 VAC to the in+ and -0.5 VAC to in-. measure the output voltage as out+ - out-.
Analog IC Design and Layout :: 10-12-2006 22:07 :: mince :: Replies: 8 :: Views: 4045
I have designed a fully differential OP.
However, I have no idea to measure it on real chip.
I want to measue the open-loop gain.
How should I do?
Thanks a lot.
The open Loop gain will be infinity (however in the real world the max. outout voltage will a little (...)
Analog IC Design and Layout :: 01-09-2006 05:05 :: dunn :: Replies: 3 :: Views: 897
I want to design a one stage differential opamp to sense some on-chip low voltage signals. The opamp's differential gain is to be 10dB around, the bandwidth is about 1GHz. Can anybody give suggestions how to send the opamp's differential outputs off chip for measurement? What prober could (...)
Analog Circuit Design :: 04-23-2005 21:46 :: icfan :: Replies: 2 :: Views: 982