To repeat Rog's response it should give the info on the back of the unit. Usually near the AC power inlet...
As Al said make sure the UPS puts out a true sine wave. SCRs will give you at best a 12 step wave (12 pulse). Cheapo Battery Back Up UPS a square wave, horrible for audio equipment.
The only true UPS units on the market today that I know of uses IGBT technology.
*Undistorted waveform (low harmonics)
*Fast switching speeds (100% step loads)
*No ripple DC (long battery life)
A True On Line UPS unit takes the AC incoming power and converts it to DC then converts it back to AC.
A True On Line UPS unit using IGBT technology cost quite a bit more $$ to buy than an SCR based unit.
As Al said make sure the UPS puts out a true sine wave. SCRs will give you at best a 12 step wave (12 pulse). Cheapo Battery Back Up UPS a square wave, horrible for audio equipment.
The only true UPS units on the market today that I know of uses IGBT technology.
*Undistorted waveform (low harmonics)
*Fast switching speeds (100% step loads)
*No ripple DC (long battery life)
A True On Line UPS unit takes the AC incoming power and converts it to DC then converts it back to AC.
A True On Line UPS unit using IGBT technology cost quite a bit more $$ to buy than an SCR based unit.