What's new New posts New profile posts Latest activity.
Self Biased vs. This voltage is the fully charged voltage of a standard SLA battery. On a typical alarm system, with say 1 - 2 short power failures per month, the battery will last much longer. Most inverters output a square wave, and most multimeters are not true RMS, so if you measure a square wave AC voltage on a meter calibrated only for sine waves, you will get an inaccurate measurement.Prolink PRO901WS UPS with incorrect voltage sensor
Is this from begining? Reply Upvote.
Product Suggestions. So make resistor R2a 10Kohm.
The computer is back to it's old tricks so my short lived elation is now dampened. The voltage in SA is between 230-240v... Most modern electronic equipment in and around our homes rely solely on the utility power supply. With a fully charged battery of 13.
EE World Online. The reason is the charging current is at too high a voltage. Replacing it won't solve the problem, not unless you buy a higher quality UPS. Did you make this project?
Gnome Executive Member Mar 8, 2012. My UPS is showing 238v input but only 206v output.
Mains Wiring Colour Code 2. True RMS meters tend to be more expensive.