Timeline for DC ripple stabilizer. 3rd order low pass filter. How to supply op-amps properly
Current License: CC BY-SA 4.0
10 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Oct 29, 2019 at 3:20 | vote | accept | user234571 | ||
| Oct 28, 2019 at 14:54 | comment | added | DKNguyen | Decoupling caps. Your simulation doesn't need them because its wires are perfect. | |
| Oct 24, 2019 at 9:41 | comment | added | Swedgin | Sorry, no idea which one in LTspice. As for an IC in specific, almost all new op-amps are rail-to-rail. Just filter in your local supplier after rail-to-rail op-amps. I have to google too. | |
| Oct 24, 2019 at 9:18 | comment | added | user234571 | @Swedgin which one would that be by default in LTspice? And something's that's common enough that I can buy at a local electronics shop? | |
| Oct 23, 2019 at 20:42 | comment | added | glen_geek | Your multimeter voltage measurements likely vary because AC input amplitude varies. A DC multimeter won't indicate how much audio-frequency ripple is present. You seem concerned with both DC variations and ripple...the low-pass filter will do nothing about DC variations. Consider using a LM317 regulator with a variable-resistor control of output voltage - it will kill both ripple and DC variations. | |
| Oct 23, 2019 at 14:26 | answer | added | bobflux | timeline score: 3 | |
| Oct 23, 2019 at 13:30 | answer | added | rdtsc | timeline score: 1 | |
| Oct 23, 2019 at 11:56 | comment | added | Swedgin | IIRC the LM358 isn't rail-to-rail. Try an opamp that can amplifier rail-to-rail | |
| Oct 23, 2019 at 11:50 | review | First posts | |||
| Oct 23, 2019 at 13:46 | |||||
| Oct 23, 2019 at 11:45 | history | asked | user234571 | CC BY-SA 4.0 |