Jul 26, 2004 #1 C cqmyg5 Advanced Member level 4 Joined Oct 21, 2003 Messages 118 Helped 3 Reputation 6 Reaction score 2 Trophy points 1,298 Activity points 963 simulate output resitance Dear All, I'm confused with this problem for long time. could anyone give me a instruction? Thanks!
simulate output resitance Dear All, I'm confused with this problem for long time. could anyone give me a instruction? Thanks!
Jul 26, 2004 #2 M mazelk Advanced Member level 4 Joined Apr 23, 2004 Messages 105 Helped 3 Reputation 6 Reaction score 1 Trophy points 1,298 Location COLOMBIA Activity points 1,143 hspice resistance Hi.... You can use .tf command in order to get output resistance, input resistance, voltage gain, etc...
hspice resistance Hi.... You can use .tf command in order to get output resistance, input resistance, voltage gain, etc...
Jul 26, 2004 #3 B bastos4321 Full Member level 5 Joined Dec 31, 1999 Messages 264 Helped 27 Reputation 54 Reaction score 7 Trophy points 1,298 Location space Activity points 2,238 hspcie resistance You can use the definition of output resistance. Just connect an AC voltage source to the output and measure the current. The output resistance is given by ohms law V/I. I use this approach to find output resistance of complex blocks. bastos
hspcie resistance You can use the definition of output resistance. Just connect an AC voltage source to the output and measure the current. The output resistance is given by ohms law V/I. I use this approach to find output resistance of complex blocks. bastos
Jul 27, 2004 #4 C cqmyg5 Advanced Member level 4 Joined Oct 21, 2003 Messages 118 Helped 3 Reputation 6 Reaction score 2 Trophy points 1,298 Activity points 963 hspice output resistance to bastos4321: Does this AC source have DC voltage? as: A: vx vout gnd ac=1mv B: vx vout gnd dc=1.5v ac=1mv use A or B? Thanks!
hspice output resistance to bastos4321: Does this AC source have DC voltage? as: A: vx vout gnd ac=1mv B: vx vout gnd dc=1.5v ac=1mv use A or B? Thanks!
Jul 27, 2004 #5 S stanlangley Junior Member level 1 Joined Mar 16, 2004 Messages 18 Helped 1 Reputation 2 Reaction score 0 Trophy points 1,281 Activity points 136 Should we connect the input to ground before conduct the simulation to calculate the output resistance? Stan
Should we connect the input to ground before conduct the simulation to calculate the output resistance? Stan
Jul 28, 2004 #6 andy2049 Junior Member level 3 Joined May 26, 2004 Messages 27 Helped 0 Reputation 0 Reaction score 0 Trophy points 1,281 Activity points 326 I think you need to connect the input to ground accroding to the definition.