Re: Power a test TTL circuit from USB?

From	not@telling.you.invalid (Computer Nerd Kev)
Newsgroups	sci.electronics.components, sci.electronics.misc
Subject	Re: Power a test TTL circuit from USB?
Date	2018-10-17 22:06 +0000
Organization	Aioe.org NNTP Server
Message-ID	<pq8boe$hsr$1@gioia.aioe.org> (permalink)
References	<pq4nkr$6hc$1@dont-email.me> <Uoidnd-fU9FBslvGnZ2dnUU7-U-dnZ2d@supernews.com> <pq7dce$a9a$1@dont-email.me> <mu2dnetSX_6K9lrGnZ2dnUU7-fGdnZ2d@supernews.com>

Cross-posted to 2 groups.

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In sci.electronics.components Phil Hobbs <pcdhSpamMeSenseless@electrooptical.net> wrote:
> On 10/17/18 9:27 AM, James Harris wrote:
>> On 16/10/2018 19:37, Phil Hobbs wrote:
>>>
>>> Sure, that'll work.? But why on earth use TTL in 2018?
>> 
>> TTL, 0.1" through-mounts, and and bipolar transistors are all I know. I 
>> told you I hadn't done this for years! What would you recommend 'these 
>> days'?
>> 
>> 
> 
> HC for slowish stuff.  TTL is vaguely similar but sucks power.

It seems to me that hardly matters unless you plan to run the final
device off battery power, or put one in every home. Admittedly the
100mA USB limit may be a factor if there are a decent number of
chips involved, but that's just one option for power.

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Thread

Power a test TTL circuit from USB? James Harris <james.harris.1@gmail.com> - 2018-10-16 14:04 +0100
  Re: Power a test TTL circuit from USB? Geo <nhhu-o3hu@dea.spamcon.org> - 2018-10-16 15:45 +0100
    Re: Power a test TTL circuit from USB? James Harris <james.harris.1@gmail.com> - 2018-10-17 14:41 +0100
      Re: Power a test TTL circuit from USB? James Harris <james.harris.1@gmail.com> - 2018-10-17 14:45 +0100
        Re: Power a test TTL circuit from USB? Geo <nhhu-o3hu@dea.spamcon.org> - 2018-10-17 16:14 +0100
  Re: Power a test TTL circuit from USB? Phil Hobbs <pcdhSpamMeSenseless@electrooptical.net> - 2018-10-16 14:37 -0400
    Re: Power a test TTL circuit from USB? James Harris <james.harris.1@gmail.com> - 2018-10-17 14:27 +0100
      Re: Power a test TTL circuit from USB? Ralph Mowery <rmowery28146@earthlink.net> - 2018-10-17 10:19 -0400
      Re: Power a test TTL circuit from USB? Phil Hobbs <pcdhSpamMeSenseless@electrooptical.net> - 2018-10-17 13:02 -0400
        Re: Power a test TTL circuit from USB? not@telling.you.invalid (Computer Nerd Kev) - 2018-10-17 22:06 +0000
          Re: Power a test TTL circuit from USB? Phil Hobbs <pcdhSpamMeSenseless@electrooptical.net> - 2018-10-18 20:58 -0400
  Re: Power a test TTL circuit from USB? Jasen Betts <jasen@xnet.co.nz> - 2018-10-16 19:21 +0000
    Re: Power a test TTL circuit from USB? James Harris <james.harris.1@gmail.com> - 2018-10-17 14:31 +0100
      Re: Power a test TTL circuit from USB? not@telling.you.invalid (Computer Nerd Kev) - 2018-10-17 22:19 +0000

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