[Amps] [Bulk] Re: Date Code Samsung 120 MFD 450 Volt Capacitors?

[Dave]

Better to find a friend with a Sprague T0-6 or earlier TO-?
73 Dave W7VM

-----Original Message-----
From: Amps [mailto:amps-bounces at contesting.com] On Behalf Of Boye
Christensen
Sent: Monday, May 11, 2015 12:47 PM
To: qrv at kd4e.com; amps at contesting.com
Subject: [Bulk] Re: [Amps] Date Code Samsung 120 MFD 450 Volt Capacitors?

Hi
If they are old
make an EXT. circuit with soft start to test each, e.g a diode with 100 kOhm
in series.
Use a DMM to measure time /voltage and calculate capacitance.
230 VAC to a diode gives app. 325 VDC, take care of safety

73 Boye OZ7C


Den 11/05/2015 kl. 18:59 skrev qrv at kd4e.com:
> OK, sounds good.
>
> I'm still trying to sort the alphanumeric label EIAJD0160:
>
> EIA = military contract?
> J = ??
> D = ??
> 01 = 2001?
> 60 = ??
>
> If 2001 they are already 14 years old - perhaps not a good choice for 
> this amp?
>
> Thanks - David KD4E
>
>
>> Or, if it a voltage doubler circuit, two more caps.
>>   
>> Gerald K5GW
>>   
>>   
>> In a message dated 5/11/2015 10:39:27 A.M. Central Daylight Time, 
>> amps at contesting.com writes:
>>
>>      Just put an additional 450 volt capacitor in series to increase the
>>      safety factor. Glen, K9STH
>>
>>      Website: http://k9sth.net
>>            From: "qrv at kd4e.com" <qrv at kd4e.com>
>>      To: "amps at contesting.com" <amps at contesting.com>
>>      Sent: Monday, May 11, 2015 8:40 AM
>>      Subject: [Amps] Date Code Samsung 120 MFD 450 Volt Capacitors?
>>        
>>      Would these caps be safe to use in an amp PS?
>>
>>      Samsung 120 mfd  at 450 volt 105c
>>
>>      Would this # EIAJD0160 reveal the date code?
>>
>>      Or best not to mess with anything below 500v?
>>
>>      The Clipperton L manual says 100uF @ 500v, the ones
>>      in there are 125uF @ 500v.
>>
>>       
>>      _______________________________________________
>>      Amps mailing list
>>      Amps at contesting.com
>>      http://lists.contesting.com/mailman/listinfo/amps
>>
>


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