[time-nuts] WWVB remodulator for the Spectracom 8170...

Bob Camp lists at rtty.us
Tue Jun 18 19:41:39 EDT 2013


Hi

The clock receivers (like a watch IC) likely are made on a low leakage / low speed process. You don't get a lot of speed, but you get enough at low voltage to do the job. Current drain is generally in the microamp range.

Bob

On Jun 18, 2013, at 6:16 PM, paul swed <paulswedb at gmail.com> wrote:

> Don't know but thats what the wwvb clock rcvrs run on 2 aa batteries.
> 
> 
> On Tue, Jun 18, 2013 at 6:10 PM, Attila Kinali <attila at kinali.ch> wrote:
> 
>> On Tue, 18 Jun 2013 17:51:29 -0400
>> paul swed <paulswedb at gmail.com> wrote:
>> 
>>> Thanks Attila Burts looking to separate the rcvr/remodulator.  I am fine.
>>> Yes indeed I did look up the hc specs. I thought it was a 5v logic
>>> actually. I knew it was not at all like the 74c series.
>> 
>> That's the HCT which are 5V (the T denotes TTL compatible).
>> 
>> I just checked it. NXP specs the HCMOS family as 2-6V, with 5V typical
>> (recomended conditions, _not_ absolute maximum ratings).
>> So it is indeed safe to run them down to 2V.
>> Weird.. where does that 3V in my mind come from?
>> 
>>                        Attila Kinali
>> --
>> The people on 4chan are like brilliant psychologists
>> who also happen to be insane and gross.
>>                -- unknown
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