Gain loop formula

fscarpa58 · 16th January 2004, 11:28 AM

Hi,

In the trade …>Solid State>Phase-Gain plot, will this oscillate? references are reported which state gain loop of a circuit is given by the following:
1/G= (1/Gv+1/Gi)

where Gv and Gi are voltage and current gain loop respectively.

Can anyone give me references ( possibly on the web) about how the above formula is mathematically derived?

Thanks in advance

Federico

peranders · 16th January 2004, 11:53 AM

You can get hold of Walt Jung's
Fat 976 pages Opamp book by Walt Jung, anyone who knows something about it?

and "opamps for everyone"
http://www-s.ti.com/sc/psheets/slod006b/slod006b.pdf

fscarpa58 · 16th January 2004, 12:19 PM

Peranders

thanks for your kind answer.

I downloaded slod006b and now
I know the way I'll spend my weekend.

Federico

16th January 2004, 11:28 AM	#1
fscarpa58 diyAudio Member Join Date: Nov 2003 Location: Genova, Italy	Gain loop formula Hi, In the trade …>Solid State>Phase-Gain plot, will this oscillate? references are reported which state gain loop of a circuit is given by the following: 1/G= (1/Gv+1/Gi) where Gv and Gi are voltage and current gain loop respectively. Can anyone give me references ( possibly on the web) about how the above formula is mathematically derived? Thanks in advance Federico

16th January 2004, 11:53 AM	#2
peranders Electrons are yellow and more is better! diyAudio Member Join Date: Apr 2002 Location: Göteborg, Sweden Blog Entries: 4	You can get hold of Walt Jung's Fat 976 pages Opamp book by Walt Jung, anyone who knows something about it? and "opamps for everyone" http://www-s.ti.com/sc/psheets/slod006b/slod006b.pdf __________________ /Per-Anders (my first name) or P-A as my friends call me

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16th January 2004, 12:19 PM	#3
fscarpa58 diyAudio Member Join Date: Nov 2003 Location: Genova, Italy	Peranders thanks for your kind answer. I downloaded slod006b and now I know the way I'll spend my weekend. Federico

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