Reply to "Running PRR signals - how to wire"

chris aOGR Forum Member DIGITAL SUBSCRIBER

I have 2 questions, I have a bunch of 12VDC relays purchased years ago... I also picked up an assortment of full wave bridge rectifiers at Radio Shack 90 percent off closing sale...

question 1 is: I bought two different bridge rectifiers as they were only 15 cents each, 1st one is 4 amps, 50 volts, the other is 25 amps, 50 volts. I am assuming these will both work the same in a signal relay circuit.... is there any downside to buying the higher current rated bridge rectifiers ?

question 2 is about limiting the "in rush" current discussed above, on the schematic above in this thread there is a "22" to the left of the resistor, is the recommended value 22 ohms ? Is there an acceptable range of resistor which will provide the in rush current limit function ? Also I am assuming 1/2 watt resistor is desirable in this application ?

thanks

2/23/156:29 PM

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