I wanted to make a voltage regulator for making a higher voltage 5v, and found a old design that worked using a schotky diode 2 resistors and to transistor. I found that such a cirquit despite not seeming to efficient would be fine to generate a reference voltage. but I was thinking about things like potential stress on the diode or fluctuations in the voltage under higher current(with stronger transistors). so I taught about making a voltage regulator that uses that as reference voltage and then uses that to control it's voltage. originally I was thinking about using something like a schmit trigger or a 555 timer in a feedback loop comparing the voltage to the reference voltage with a slight offset so it would act like a PWM signal and either be on or off.
however it is late in the evening and I knew I shouldn't go to deep into something like this since there are many good cheap IC's for regulating voltage, also using high frequency switching, and I knew that if I started to read the datasheets I would go further into it and eventually go way to deep in things and spend more effort on it than it would be to go to a closby store and get a regulator IC there. especially since I will most likely eventually still use a off the shelf IC for it since the parts are quite sensitive to over or undervoltage.
and I eventually came with the idea that just greatly amplifying the signals of the feedback loop might have a similar effect of keeping the transistor/mosfet responsible for driving the output in a high efficiency state.
on the right bottom is the old reference voltage circuit. the one on the top left is the first design I came with, however that one was mostly meant to use a schmit trigger or such a 555 contraption instead of a simple transistor there on the top left but I didn't draw it like that because perhaps normal transistors also could keep it efficient enough and a schmit trigger might have to much voltage fluctuation and is a lot of work to build by yourself.
the V2 on the bottom left is the second design I came with it uses a PNP transistor, a NPN transistor and a PNP mosfet. when the output voltage is to low the PNP transistor enables because the trigger is pulled low, then the NPN transistor is also triggered because the trigger of that one is put high. the NPN transistor makes a NOT gate with the transistor above it, so when it is on the voltage above it gets to low, so the PNP transistor enables and the V OUTPUT rises., it is capacitor stabilized. and it should keep the voltage at VOUT at the voltage the 5v reference generates.
all would have a shared ground.
But would it make any sense to use a cirquit like this, would it have a benefit like stability or keeping the mosfet in stable states. or would it really make no sense to that and would it be better to just replace the first transistor of the old REF circuit with a more powerful transistor or mosfet/
and would something like a 555 or schmit make V1 or V2 more efficient, this is especially the case if it isn't yet more efficient than the old REF circuit.
however it is late in the evening and I knew I shouldn't go to deep into something like this since there are many good cheap IC's for regulating voltage, also using high frequency switching, and I knew that if I started to read the datasheets I would go further into it and eventually go way to deep in things and spend more effort on it than it would be to go to a closby store and get a regulator IC there. especially since I will most likely eventually still use a off the shelf IC for it since the parts are quite sensitive to over or undervoltage.
and I eventually came with the idea that just greatly amplifying the signals of the feedback loop might have a similar effect of keeping the transistor/mosfet responsible for driving the output in a high efficiency state.
on the right bottom is the old reference voltage circuit. the one on the top left is the first design I came with, however that one was mostly meant to use a schmit trigger or such a 555 contraption instead of a simple transistor there on the top left but I didn't draw it like that because perhaps normal transistors also could keep it efficient enough and a schmit trigger might have to much voltage fluctuation and is a lot of work to build by yourself.
the V2 on the bottom left is the second design I came with it uses a PNP transistor, a NPN transistor and a PNP mosfet. when the output voltage is to low the PNP transistor enables because the trigger is pulled low, then the NPN transistor is also triggered because the trigger of that one is put high. the NPN transistor makes a NOT gate with the transistor above it, so when it is on the voltage above it gets to low, so the PNP transistor enables and the V OUTPUT rises., it is capacitor stabilized. and it should keep the voltage at VOUT at the voltage the 5v reference generates.
all would have a shared ground.
But would it make any sense to use a cirquit like this, would it have a benefit like stability or keeping the mosfet in stable states. or would it really make no sense to that and would it be better to just replace the first transistor of the old REF circuit with a more powerful transistor or mosfet/
and would something like a 555 or schmit make V1 or V2 more efficient, this is especially the case if it isn't yet more efficient than the old REF circuit.