[NJARC] Surge limiting resistor

Al Klase ark at ar88.net
Mon Nov 28 20:40:33 EST 2016


Hi Joe,

It's hard to imagine how you could build a radio cheaper than this.


It's a superhet without an IF amplifier fer Pete sake!!

As for WR1, you might try two of *these 
<http://www.digikey.com/product-search/en/circuit-protection/inrush-current-limiters-icl/656273?k=&pkeyword=&v=317&pv679=2&pv680=182&FV=fff4000a%2Cfff80391&mnonly=0&newproducts=0&ColumnSort=0&page=1&quantity=0&ptm=0&fid=0&pageSize=25>*in 
series.  Failing that, a 50-ohm 5-watt resistor should do OK.

Good luck,
Al

On 11/28/2016 1:08 PM, TrainBee via NJARC wrote:
> Just remember
> Reply = Poster
> Reply All = Everyone
>
> _________________________________________________________
>
>
> I've come across something I haven't seen before.  It's a Surge 
> Limiting Resistor.  This is going into a Philco C-579.  (Pg 16 in 
> Beitmans 1955)  It's a little plastic case radio.  It also has a 
> phenolic board with copper tracing.  That's seen better days as well.  
> It seems the only thing holding me back is this resistor.
>
> Can anyone lead me to a source for them?  The schematic says 880 ohms 
> when cold / 50 ohms when hot.
>
> Thanks in advance.
>
> Joe Devonshire
>
>
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-- 
Al Klase – N3FRQ
Jersey City, NJ
http://www.skywaves.ar88.net/

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