theCybe
- Thread Starter
- #32
@Thylantyr, I don't concider this a "toy" but more of a specialized tool. the result thus far have been similar to an OScope. further, the OScope can be used in conjunction with the circuit to give enhanced results (and also validating its use as a specialized tool instead of toy). the cheaper version is fully passive and requires a DMM and some skill. I'm still working on the automated version.
@Thylantyr, depending on design goals, you would have issues with: when to switch and when to charge, as well as switching bleedthrough. basically a sudden change in supply voltage will send a transient to the output. the mechanisms for this are capacitive coupling, base-width/channel-lenght modulation, velocity saturation (some FETs in some cases), and probably a few others. There are other concerns with the switching mechanism and power supply losses. (to use an NFET you need an even higher voltage or you get a huge loss because the device becomes a crappy diode. So you may need to use power PFETs in some places.) but at this level of detail, the subject is a second thread.
@theCybe, specifically?
@Thylantyr, depending on design goals, you would have issues with: when to switch and when to charge, as well as switching bleedthrough. basically a sudden change in supply voltage will send a transient to the output. the mechanisms for this are capacitive coupling, base-width/channel-lenght modulation, velocity saturation (some FETs in some cases), and probably a few others. There are other concerns with the switching mechanism and power supply losses. (to use an NFET you need an even higher voltage or you get a huge loss because the device becomes a crappy diode. So you may need to use power PFETs in some places.) but at this level of detail, the subject is a second thread.
@theCybe, specifically?
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