Timeline for Using 230V-115V Transformer for 240V supply
Current License: CC BY-SA 4.0
6 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Oct 16, 2018 at 12:06 | comment | added | Samzun | the let-thru voltage of 220-240 SPD are very high.. in the 1200 volts.. whereas for 120 volts.. it's only let thru of 330v to 500v | |
| Oct 16, 2018 at 11:34 | comment | added | ThreePhaseEel | @Samzun -- why don't you just get a 220-240V SPD then? :/ | |
| Oct 16, 2018 at 4:46 | comment | added | Samzun | I'm using a 127v MCOV SPD type 3. And to have safety margin. I can't use 120 volts output of my 220volts ac power (I can't use 220volts SPD because clamping voltage will be very high). So I need to use 100 volts output from transformer or voltage regulator. But if the power sags to 95v or 90v.. would the switching power supply still work? Can it's ic take 95 volt power for instant when it says 100-240v range? | |
| Oct 16, 2018 at 3:54 | comment | added | ThreePhaseEel | @Samzun -- there will be a undervoltage lockout on the supply's IC that will keep it from turning on at too low of a mains voltage -- but there's no need to plug such a universal input power supply into a transformer to begin with, as it will be happy on any mains voltage from 100 to 240V. | |
| Oct 16, 2018 at 3:28 | comment | added | Samzun | What if a switching power adapter for CCTV or cellphone or gadget has voltage range of 100-240v and the power c inputted is 90 volts.. what would happen to the adaptor? how low below the lowest can it still run? Or does the IC inside it is strict that it can only turn on if at least 100 volts? | |
| Oct 15, 2018 at 23:06 | history | answered | ThreePhaseEel | CC BY-SA 4.0 |