I would like to work on a discrete regulator circuit, and an important criterion is how well it does when the load (e.g. a DAC or pre-amp circuit) alters its power use rapidly (typically at audio frequencies (*)).
Any suggestions as to how I represent such a load in LTSpice?
BugBear
(*) yeah, I know, some extreme class-A amplifier circuits don't do this.
Any suggestions as to how I represent such a load in LTSpice?
BugBear
(*) yeah, I know, some extreme class-A amplifier circuits don't do this.
Maybe a voltage controlled current source (or switch etc.) could do what you want (G1 for example)?
Advantage being you can control the "rapidly altering power" easily via a pulse function of the voltage control.
Advantage being you can control the "rapidly altering power" easily via a pulse function of the voltage control.
A standard current source can be set up to generate a pulse waveform while running a transient analysis. And you can characterize the output impedance vs frequency of your reg using an AC analysis, driving the reg output with a current source.