[AMRadio] Chip needed...


Brett gazdzinski brett.gazdzinski at verizonbusiness.com
Thu Mar 1 12:12:03 EST 2007


Mouser did come up with some sort of cross reference,
njm741d, so I ordered 2 different replacement kinds, the data sheet shows
it as a single op amp, with positive and neg inputs and working voltages.

Perhaps the 741 is a generic single op amp?

I don't really do much with chips anymore...

Brett
 

> -----Original Message-----
> From: amradio-bounces at mailman.qth.net 
> [mailto:amradio-bounces at mailman.qth.net] On Behalf Of Jim candela
> Sent: Wednesday, February 28, 2007 11:49 PM
> To: Discussion of AM Radio in the Amateur Service
> Subject: RE: [AMRadio] Chip needed...
> 
> 
> 
> -----Original Message-----
> FromBrett gazdzinski
> Sent: Tuesday, February 27, 2007 7:28 PM
> 
> I am looking for an IC chip to fix my swan wm-3000, I
> replaced the diodes with 1n34a and it works fine on rms,
> but the pep reading is still dead.
> All the other parts check fine, so I need to get a
> small 8 pin IC chip made by NEC with the part number
> of C151C.
> It says on the top of the chip:
> 
>  NEC r62
>  C151C  319
> 
> 
> Reply by Jim, WD5JKO:
> 
> Brett,
> 
>   This might be a longshot, but the 8 pin chip might be a dual op-amp.
> Google for a data sheet on devices such as mc1458, tl072, 
> lm358. The power
> pins are 4 (gnd or -), and 8 (+). The outputs are pins 1, 7. 
> The LM358 is
> usually used with a single supply, and the others with dual 
> +/- supplies.
> All are readily available, and very cheap.
> 
> Regards,
> Jim
> JKO
> --
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> 4:09 PM
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