[rogerg (Roger)]

Hi all,

Can anyone with electronics knowledge clarify for me whether a pure sine wave UPS is required or will give any benefit over an approximated sine wave UPS for astronomical equipment.

The equipment specifically I am thinking of:
- Paramount ME
- SBIG cameras
- USB hubs etc
- Focus motors, dew heaters, etc.
- Network infrastructure
Everything above runs off transformers usually outputting 5-24v, so my estimate is that pure sine wave or approximated sine wave would make no difference as the transformer is going to smooth it out and convert to DC regardless.

Also running off it is a standard desktop PC.

I have always had my gear on UPS’s but am now looking at replacing the 13 year old units I have (batteries replaced several times).

Thanks,
Roger.