Adding a 6v boost to a 12v battery charger

So, you're not trying to be a smart-ass, huh?

Thanks for playing.

TMT

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So John...if you are a designer...and I do emphasize IF...your behavior here indicates that you are not a team player you could be.

I have supplied you and others with sufficient info to determine a design opinion.

Others have been able to supply information (which I do appreciate) while you seem to be unable to.

I have also posted this same question elsewhere..and again no one else is complaining like you are.

While I thank you for what positive comments you have offered, you may want to reflect on why you alone seem to have a continuing problem with a simple design consultation.

Good luck with your career and have a nice and productive day.

TMT

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Thanks again for confirming my assessment of your capabilities. ;

Probably upstream's easier--anything downstream will have to handle

From the wiring diagram you posted later in this thread, the circuit is just a transformer driving a half-wave rectifier, piped straight to the battery. The charger's power-selection switches choose one of several primary taps, varying the output voltage. Four paralleled secondary windings drive two heat-sink-mounted power rectifiers. That' s it.

So, for 6v, run it off a 2kW step-down transformer.

What are the voltage outputs on the various power settings?

-- Cheers, James Arthur

If it has two or more parallelled primary windings put them in series to reduce the output voltage by half. Though looking at that circuit diagram, its not clear if thats the case.

Not the case. The print's fuzzy, but there aren't enough switches & jumpers in the diagram to handle two primaries with two taps (four total leads) each.

I asked about the voltages 'cause, at a minimum, you'd want to set it on the lowest voltage.

-- Cheers, James Arthur

Agreed.

Use it to charge two 6 volt batteries in series?