Hi,
The boost converter in the schematic is using a 1.25V reference generated by the LM317 (via external power) for the LM393. I would like to replace this reference with one capable of operating at 1.25-2.7V. I have tried a number of methods all of which suffer a voltage decline along with C1 which corresponds to a predictable variance in output voltage. There are many improvements to be made on the circuit though for the time being I would like to focus on generating a reference from scratch. I have reviewed methods for Zeners, charged capacitors and bandgap references, some of which are terribly complex. Any input is appreciated.
Regards,
Mark
edit: forgot to include R9
The boost converter in the schematic is using a 1.25V reference generated by the LM317 (via external power) for the LM393. I would like to replace this reference with one capable of operating at 1.25-2.7V. I have tried a number of methods all of which suffer a voltage decline along with C1 which corresponds to a predictable variance in output voltage. There are many improvements to be made on the circuit though for the time being I would like to focus on generating a reference from scratch. I have reviewed methods for Zeners, charged capacitors and bandgap references, some of which are terribly complex. Any input is appreciated.
Regards,
Mark
edit: forgot to include R9
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