I have seen 9+ volt spikes in my telemetry from the first gen 9 channel powersafe receivers that I have (using 2s lipos). It does seem realistic that a capacitor should solve that problem. I am curious to hear what John says.I'm considering some Promodeler servos for my next airplane and read today that there can be an issue with them when using a Spektrum Powersafe receiver. Evidently from what I understand there can be power spikes from the servos, I guess trying to feed voltage back into the receiver. On a PowerSafe it won't let the voltage feed back into the batteries so it spikes the servos and can evidently get as high as 9 volts from a 2s LiPo setup. The newer Hitec servos like the 9380 do something similar and come with a P.A.D. Power Absorbing Device that plugs into the receiver to solve this.
Anyone know anything more about this? I'm going to contact John from Promodeler and see if a PAD would solve this for his servos as well.
I emailed him and asked, I'll let you know what he says.I have seen 9+ volt spikes in my telemetry from the first gen 9 channel powersafe receivers that I have (using 2s lipos). It does seem realistic that a capacitor should solve that problem. I am curious to hear what John says.
I've decided to use 7954'sThe PAD would mitigate voltage spikes (as that's what our Brushless do) but they only come with the servos from the factory.