[ICOM] PS-125

[Mike]

Hmmmm....

I haven't shorted any pins. Wonder why I can't read any voltage across 
any combination of the 4 pins?

Mike, NF4L

Larry Young wrote:
> "I don't think that is what he means? The Icom supplies need 2 pins to short 
> for the supply to work. The on off on the radio is for the both the supply 
> and the radio"
>
> This was indeed true for the earlier Icoms such as the 740 & 745 etc. Not true for the 756Pro series of recent radios which contain settable turn on timer circuitry. These radios require the presence of +13.8 V for the timer to work.
> Do not short any pins of the PS-125 plug. Two pins are the positive and two are the negative pins.Only the front panel rocker switch of the PS-125 is used to turn it off and on. Either an over voltage or over current condition will cause the internal controller to sut down the supply until it is reset.
> Larry K4LXV.
>
>