Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronic Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

Register Log in

how to raise the direct current gain in op amp circuit ?

Status
Not open for further replies.

fendyfazeli

Newbie level 4
Joined
Jul 22, 2009
Messages
5
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,281
Location
Malaysia
Activity points
1,304
current gain

the problem is : how to raise 30 % direct current (DC) gain in op-amp circuit ?

Do we need to do something at R9 & R10 to improve it?
or depend on the Vcc?

Thanks..

 

FvM

Super Moderator
Staff member
Joined
Jan 22, 2008
Messages
47,670
Helped
14,079
Reputation
28,415
Reaction score
12,742
Trophy points
1,393
Location
Bochum, Germany
Activity points
276,946
how to raise amperage

As far as I see, it's a standard OP structure. Current gain isn't a parameter here, I think. You have voltage gain, output impedance, current limit. Which parameter you want to modify?
 

fendyfazeli

Newbie level 4
Joined
Jul 22, 2009
Messages
5
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,281
Location
Malaysia
Activity points
1,304
current gain circuit

the parameter which to modify is Direct Current (DC) gain or voltage gain. How to improve the parameter? which stage in OP that we need to modfy? thanks..
 

sidang

Newbie level 5
Joined
Aug 25, 2007
Messages
8
Helped
1
Reputation
2
Reaction score
0
Trophy points
1,281
Location
Malaysia
Activity points
1,350
dc current gain

Hi..

question 1:
the problem is : how to raise 30 % direct current (DC) gain in op-amp circuit ?
answer : try to change the resistor R4 value to 1K , Q10 multiplier to 15 times and change the Q8 value to 0.2

Question2 :
Do we need to do something at R9 & R10 to improve it?
or depend on the Vcc?
answer : no...

thanks
 

pckkbo

Newbie level 3
Joined
Aug 5, 2009
Messages
3
Helped
1
Reputation
2
Reaction score
0
Trophy points
1,281
Location
P.R.China
Activity points
1,294
how to raise amps

Optimization of the component parameters can be used only if all other reserves for the structural and circuits topology improvement are exhausted,which in practice,means never......

add a amp stage but not a gain stage in the signal path way.
 

Status
Not open for further replies.
Toggle Sidebar

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Top