Hi,
I bought a 12V / 7.5 PSU from JayCar to power my Celestron AVX mount (
http://www.jaycar.com.au/Power-Produ...ocket/p/MP3575), but I am not sure whether it is regulated or not.
The shop staff weren't able to tell me but said "probably", which doesn't fill me with confidence...
It seems to me that having a regulated power supply is highly desirable for a telescope mount, and I'm reluctant to experiment with a $1500 device which specifically states that use of non-Celestron PSUs will void the warranty.
My limited understanding is that a regulated supply should supply the specified voltage for all loads up to the maximum rated current (7.5A in this case). I measured the DC voltage without load at 13.2V - which seems high for a 12V device. The AC "ripple" (measured putting the meter to AC volts, and observing the changes), was 200-300mV. I have read that anything more than 100mV ripple voltage *may* indicate a non-regulated supply.
Can anyone advise whether it would safe to use this PSU on my mount?
Many thanks for any guidance.
John.