Rogue MegaWatt 30Amp bulk charger.
Been using my Megawatt 30 amp PSU now for over a year with the fine adjust pot, when mxwanderer suggested a 500 ohm 2 watt 10 screw potientiometer to replace the rather touchy one screw micro pot. ...
Forum Discussion
MEXICOWANDERER wrote:Salvo wrote:
I wouldn't call it a non-issue until you've verified the output has no excessive ripple. You can't see that with a dc meter. You need a scope set to ac and 200 mV/div. If that's flat, THEN there's no problem.
I am going to assume max ripple at max watts. Some data was provided except for your thoughts regarding max permissible ripple in relationship to near perfect <2.0 MV. You wrote you specialize in power supply design. So surely there must be a worry-point with regard to ripple on this section of the circuit.
Yeah I have to play 'Fraidy Cat because of where I live. In theory a strong bolt of nearby lightning can influence a hypersensitive circuit. So call me chicken. It depends on Salvo's answer. Max mv ripple permitted.
Might as well buy a couple of meters of shielded pair wire. Don't forget Niner your plastic rheostat itself is a coil subject to inductance. I have seen bad juju results of circuit resonance ringing and I ain't too keen on shortcutting and getting whacked by an inside straight.
I've no idea what you're saying about shortcuts , getting whacked by an inside straight. Have to put it in laymen's terms for me Mex, not type in hyperbole.
I don't camp and run the generator outside when it's raining and I hear thunder in the distance. It gets shut off and pulled inside, out of the rain. Very basic rule of thumb for me. Portable Honda means it's under constant supervision by me when charging, lest it grow legs and walk off. So I tie flys or what ever for an hour or so if necessary, while the megawatt does it's thing.
