2013Follow Focus forum
AC adapter solution for Preston Focus-Iris monitoring units
13 years old. Gear and prices may have changed since.
What the thread found
- An AC adapter can be built to power a Preston Focus-Iris unit from a standard power bar, eliminating the need for batteries during long monitoring sessions on set.
- A switching regulator placed inside a battery pack shell can convert AC power sources up to 30 volts into the correct DC voltage for cinema equipment.
- This adapter solution costs approximately 100 dollars and can remain connected all day without attention.
Depends on
- The adapter described was custom-built rather than commercially produced at the time of discussion.
- Details about exact voltage specifications and compatibility with all Preston Focus-Iris models are not provided.
- Implementation appears to be a non-standard modification using salvaged parts.