Involvement:Expert (understands the inner workings) - Ownership:1 day to 1 week
* Wide output range
* Mount holes
* Relatively small
* High quiescent current (13mA @1cell to 12V, 65mA @1cell to 35V)
* uneven Pot adjustment (lower end: 1 turn ~0,4V, higher end: 1 turn ~2,5V)
* Mount holes are near In+ and Out-, low space = risk of short.
* No Low voltage Cutoff
Find the desired resistance, desolder the potentiometer, add fixed resistance. This will increase stability & reliability.
Also take care when screwing these to any conducting surface/material.
And remember to add an mechanical switch.
If you need more current then the small USB "charger"s can supply, or if 5V isn't enough for your use, then this or any other of the LM2577 adapters will definitely do the trick.
But they have limits if the lithium cell is depleted, higher output voltages and/or currents may be problematic.
This one is better for 2-cell applications.
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