Yes - I know Hammond well. They are still in Ontario.
On the other hand, the Digi-Key product should be here Tuesday. Unfortunately
they don't have a similar Hammond replacement and I'd like to get the 9420 back
up and running quickly.
Thanks.
73,
Rick
VE7TK
Website: http://www.ve7tk.com
>________________________________
> From: Bob McGraw - K4TAX <RMcGraw@Blomand.net>
>To: Rick W <ve7tk@yahoo.ca>; Discussion of Ten-Tec Equipment
><tentec@contesting.com>
>Sent: Sunday, June 9, 2013 4:11:40 PM
>Subject: Re: [TenTec] 9420 PS Problem
>
>
>Hammond Manufacturing is still in business. I have a good friend that buys
>transformers from them for his very successful guitar amp business. He is
>building very unique tube amps that sound wonderful.
>
>http://www.hammondmfg.com/5cindex.htm
>
>
>
>73
>Bob, K4TAX
>
>
>
>
>----- Original Message -----
>From: "Rick W" <ve7tk@yahoo.ca>
>To: <d.e.warnick@comcast.net>; "Discussion of Ten-Tec Equipment"
><tentec@contesting.com>
>Sent: Sunday, June 09, 2013 4:22 PM
>Subject: Re: [TenTec] 9420 PS Problem
>
>
>Many thanks Dave. I think I'm on the right track with the Digi-Key
>transformer.
>
>73,
>Rick
>VE7TK
>
>Website: http://www.ve7tk.com
>
>
>
>>________________________________
>> From: "d.e.warnick@comcast.net" <d.e.warnick@comcast.net>
>>To: Rick W <ve7tk@yahoo.ca>; Discussion of Ten-Tec Equipment
>><tentec@contesting.com>
>>Sent: Sunday, June 9, 2013 12:50:20 PM
>>Subject: Re: [TenTec] 9420 PS Problem
>>
>>
>>
>>OK, I dug the package out
>>The Transformer is a Hammond Manufacturing 226L16
>>Dual Primary, Dual Secondary
>>Primary is 117/234 V 50/60 HZ
>>Secondary:
>> Serial 16V/2.2A
>> Parallel 8V/4.4A
>>You will want them in series, I'm sure
>>
>>I hope this helps
>>
>>73 es gud luck
>>Dave
>>WA3F
>>
>>
>>
>>________________________________
>>
>>From: "Rick W" <ve7tk@yahoo.ca>
>>To: n4py3@earthlink.net, "Discussion of Ten-Tec Equipment"
>><tentec@contesting.com>
>>Sent: Sunday, June 9, 2013 1:57:24 PM
>>Subject: Re: [TenTec] 9420 PS Problem
>>
>>Looking at my calculations (assuming 0.7 V drop on each diode):
>>
>> (12.6 VAC * 1.414) - (2 * 0.7) = 16.4 VDC at the regulator.
>>
>>When you add in any capacitor ripple I think this is pretty close to the
>>margin. I think you are right Carl. I need closer to 18 VDC at the
>>regulator.
>>
>>A 16 VAC transformer would give me 21.2 VDC and that is well within the
>>specs of the 7815.
>>
>>I have found a dual primary (115/230 VAC) transformer with 8/16 VAC out at
>>5.4/2.7 amps (parallel/series ratings). The physical size is close to the
>>original (Digi-Key P.N. 237-1261-ND). Cost is $11.14 CAN plus shipping and
>>taxes.
>>
>>73,
>>Rick
>>VE7TK
>>
>>Website: http://www.ve7tk.com
>>
>>
>>
>>>________________________________
>>> From: Carl Moreschi <n4py3@earthlink.net>
>>>To: Rick W <ve7tk@yahoo.ca>; Discussion of Ten-Tec Equipment
>>><tentec@contesting.com>
>>>Sent: Sunday, June 9, 2013 8:57:58 AM
>>>Subject: Re: [TenTec] 9420 PS Problem
>>>
>>>
>>>It's most likely at least 18 vac output on the transformer.
>>>
>>>Carl Moreschi N4PY
>>>121 Little Bell Dr.
>>>Hays, NC 28635
>>>www.n4py.com
>>>
>>>On 6/9/2013 11:10 AM, Rick W wrote:
>>>> Steve and Dave thanks for getting back on this.
>>>>
>>>> I was wondering if either of you knew the transformer output
>>>> specifications. I'm guessing it is around 12.6 VAC at perhaps 1 amp or
>>>> so. (The regulator is a 1-amp 7815.)
>>>>
>>>> It is an interesting design with the transformer on 24/7 while AC power
>>>> is applied. I shut off AC to all my supplies with a Master switch in the
>>>> station at the end of each day.
>>>>
>>>> Interesting that the T-T replacement is not an exact match. Digi-Key has
>>>> several in stock and their delivery time to my QTH is amazing. Just want
>>>> to be close to the original in voltage and current rating.
>>>>
>>>> Thanks for the surge suppressor tip bob. I'll look into it.
>>>>
>>>> 73,
>>>> Rick
>>>> VE7TK
>>>>
>>>> Website: http://www.ve7tk.com
>>>>
>>>>
>>>>
>>>>> ________________________________
>>>>> From: Steve Hunt<steve@karinya.net>
>>>>> To: Discussion of Ten-Tec Equipment<tentec@contesting.com>
>>>>> Cc: d.e.warnick@comcast.net; Rick W<ve7tk@yahoo.ca>
>>>>> Sent: Sunday, June 9, 2013 7:35:20 AM
>>>>> Subject: Re: [TenTec] 9420 PS Problem
>>>>>
>>>>>
>>>>>
>>>>> Mine failed 9 years ago and I fitted a £15 replacement from
>>>>> RS-Components here in UK. Not much help to you as the part is no longer
>>>>> available :(
>>>>>
>>>>> It's worth noting that transformer is powered 24x7x365 if you leave
>>>> the 9420 plugged in to a powered wall socket.
>>>>>
>>>>> Good luck in your search.
>>>>>
>>>>> Steve G3TXQ
>>>>>
>>>>>
>>>>>
>>>> _______________________________________________
>>>> TenTec mailing list
>>>> TenTec@contesting.com
>>>> http://lists.contesting.com/mailman/listinfo/tentec
>>>>
>>>
>>>
>>>
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>>
>>
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