EternityForest
Member
Ok tell me if this is old news or if it just plain nonsense:
Is there any reason you couldn't use one of those voltage level detectors like they use in BEAM robotics to make a Buck mode regulator?
as in set it up to monitor the voltage across a capacitor and add a bit more charge if the output got too low?
the dectector chips cost about a dollar fifty and have 20mv hysterysis with 1-200us response time. this might not be the best regulation ever but combined with a linear regulator or used for things like led driving it looks like a good idea if it works. i know they use them for basically relaxation oscillators to store charge and dump it in a motor for solar bots. this would basically be a relaxation oscillator in reverse, with the switch charging the cap and the load discharging it. because the voltage detector IC never(or should never) be exposed to inuput voltage the whole system should be rated to the voltage of the transistor you use to charge the cap through.
so whadaya think? would it work?
Is there any reason you couldn't use one of those voltage level detectors like they use in BEAM robotics to make a Buck mode regulator?
as in set it up to monitor the voltage across a capacitor and add a bit more charge if the output got too low?
the dectector chips cost about a dollar fifty and have 20mv hysterysis with 1-200us response time. this might not be the best regulation ever but combined with a linear regulator or used for things like led driving it looks like a good idea if it works. i know they use them for basically relaxation oscillators to store charge and dump it in a motor for solar bots. this would basically be a relaxation oscillator in reverse, with the switch charging the cap and the load discharging it. because the voltage detector IC never(or should never) be exposed to inuput voltage the whole system should be rated to the voltage of the transistor you use to charge the cap through.
so whadaya think? would it work?