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BrianG · 07:51 PM

I don't know why they don't have it already. Seems easy to do. The only thing about the arrangement I posted above is that instead of a 4s pack cutting off at 12v (3.0v/cell), it will cut off at 12.7v (3.175v/cell) for a 0.7v drop silicon diode, or 12.3v (3.075v/cell) for a 0.3v drop germanium diode. Anything lower than a 4s LVC wouldn't work well since the diode voltage drop would be too great.

The nice thing about this "circuit" is that it can be contained on a small heatshrink-wrapped PCB with in/out wires (like a UBEC) and can even add a small PCB mount potentiometer to adjust the delay at which the LVC responds.

I'd try it but I don't have a test LVC to play with.

The only other way to make sure the voltage doesn't drop under quick heavy loads is to add a bunch of low-esr caps to help with the surges. It would be larger and more expensive, not to mention the initial hook-up spark due to the large capacitance you'd have to have.

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BrianG RC-Monster Admin Offline Posts: 14,609 Join Date: Nov 2005 Location: Des Moines, IA	02.11.2008, 07:48 PM I don't know why they don't have it already. Seems easy to do. The only thing about the arrangement I posted above is that instead of a 4s pack cutting off at 12v (3.0v/cell), it will cut off at 12.7v (3.175v/cell) for a 0.7v drop silicon diode, or 12.3v (3.075v/cell) for a 0.3v drop germanium diode. Anything lower than a 4s LVC wouldn't work well since the diode voltage drop would be too great. The nice thing about this "circuit" is that it can be contained on a small heatshrink-wrapped PCB with in/out wires (like a UBEC) and can even add a small PCB mount potentiometer to adjust the delay at which the LVC responds. I'd try it but I don't have a test LVC to play with. The only other way to make sure the voltage doesn't drop under quick heavy loads is to add a bunch of low-esr caps to help with the surges. It would be larger and more expensive, not to mention the initial hook-up spark due to the large capacitance you'd have to have. Last edited by BrianG; 02.11.2008 at 07:51 PM.