Re: Chaining power supplies together.
Overvoltage would take a zener, or an SCR/zener trigger (IMHO).toggle quoted messageShow quoted text
A straight back biased diode (say 3 amps at 100 volts or so) should take care of back biasing the power supply. (reverse polarity here). It does not protect against positive current being driven into the supply's outputs.
The problem with charging a battery is that the output is lower than the battery voltage, so current flows the wrong way. PUtting a series diode between the supply and battery (say 50 to 100 PIV) and rated for more than the PS current, would protect the supply You'd have to figure in that your output voltage is 1 diode drop lower than the supply voltage, except that for batter charging, you *may* be more concerned with the current, not the voltage.
While you may be able to play games with the sense inputs, I have no idea of the internal wiring, and don't know (based on no schematic how the circuit might behave).
This is for trying to constant current charge a battery, though.
On 5/1/2021 6:10 PM, Dave Peterson via groups.io wrote:
So by protection diode, you're not talking about over-voltage, you're talking about accidentally driving another source. So a forward biased diode that would prevent current into the power supply.