Re: Latching Relay Drivers
That's why he specified "debounced"...
--
Member of the toughest, meanest, deadliest, most unrelenting -- and
ablest -- form of life in this section of space, ?a critter that can
be killed but
By
Roy J. Tellason, Sr.
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#99275
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Re: Latching Relay Drivers
That'll work, also a Type D FF, if you tie the D input to the Not-Q output. Whether high input will trigger it or not depends on the part, they can work either way, check the datasheet (have a
By
Roy J. Tellason, Sr.
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#99274
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Re: Slow cycling LED 'flasher' for model trains
On Friday 29 November 2024 07:35:28 pm wn4isx via groups.io wrote:
> We've had several requests over the last few years for LED flashers for model train enthusiasts. One problem with most LED flashers
By
Roy J. Tellason, Sr.
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#99273
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Re: Light from semiconductor junctions
On Friday 29 November 2024 07:24:12 pm wn4isx via groups.io wrote:
> This will be my last post on non-LED semiconductors emitting light.
>
> First, all of the forward biased semiconductors I tested
By
Roy J. Tellason, Sr.
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#99272
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Re: Latching Relay Drivers
It's sounds like you're trying for an electronic solution to a simple series of 16 "pulse ON, pulse OFF" latching relays? Where a relay is turned on with an "ON" pulse, then stays ON until it receives
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Terry
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#99271
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Re: Latching Relay Drivers
I guess these are electronic latching circuits for driving a relay - not physical latching relays.? You can get latching relays that use no electronics.? I never used one.
You are correct.? JK
By
Andy
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#99270
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Re: Latching Relay Drivers
It is not what you asked for, but if your relay has extra contacts you can wire it up to be latching and releasing with a separate line.
Bertho
By
Bertho
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#99269
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Re: Latching Relay Drivers
So not SET and RESET lines but a single TOGGLE line?
That is tricky since you may get ringing or noise on
the line. Use separate lines if possible.
Everything else, USN2308 etc, sounds
By
Bob Smith
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#99268
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Latching Relay Drivers
Been playing with various chinese-originated latching relay solutions from Amazon. Most are 'overly optimistic' about capabilities. Very 'overly optimistic'. Otherwise the rest have issues operating
By
SheldonD
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#99267
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Slow cycling LED 'flasher' for model trains
We've had several requests over the last few years for LED flashers for model train enthusiasts. One problem with most LED flashers is the go from full off to full on whereas old style caboose, water
By
wn4isx <wn4isx@...>
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#99266
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Light from semiconductor junctions
This will be my last post on non-LED semiconductors emitting light.
First, all of the forward biased semiconductors I tested emitted light. The glass cased silicon diodes were the easiest to verify,
By
wn4isx <wn4isx@...>
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#99265
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Re: aliexpress freq counters views
Something to think about.....
--------------------------------------------
Practices of Science: Precision vs.
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wn4isx <wn4isx@...>
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#99264
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Re: aliexpress freq counters views
Sometimes having lots of digits can be helpful, even when it does not mean precision accuracy.? Then it is up to the user of the instrument to interpret it correctly.
For example, when making
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Andy
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#99263
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Edited
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Re: What list is this again?
My best (preferred) way for correcting my mistakes in group messages, is to reply to my post and point out the error.? I quote only the words or sentence that changed.? I do not send the whole thing
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Andy
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#99262
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I am an idiot.
I am an idiot. Yep, it is confirmed. I've spent a lot of spare time in the last 2 months getting a hi-impedance analog meter suitable for aligning a radio's intermediate frequency.
And I have a
By
wn4isx <wn4isx@...>
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#99261
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Re: What list is this again?
I'm not deleting my posts to hide anything, I figure Google, MI5, CIA, NSA, ASPCA, JDL and Al Quida all have copies of everything I've publicly posted. I'm deleting to keep the group files neater and
By
wn4isx <wn4isx@...>
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#99260
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Re: aliexpress freq counters views
Which is one of the reasons why I won't order from them. I have ordered some stuff from Banggood, and one of the last things was a Baofeng radio, where the web page specifically stated that the AC
By
Roy J. Tellason, Sr.
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#99259
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Re: aliexpress freq counters views
And yet they give you eight digits? And claim to be usable up to 1200MHz? I think I'll pass...
By
Roy J. Tellason, Sr.
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#99258
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Re: What list is this again?
On Thursday 28 November 2024 04:12:16 am Kerim via groups.io wrote:
> On Wed, Nov 27, 2024 at 09:48 PM, wn4isx wrote:
>
> >
> > Since I suspect my writing style also irritates people, I've deleted
By
Roy J. Tellason, Sr.
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#99257
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Re: Clarification
Too damn many TLAs! :-)
It''s an assembly method. Period. The big advantage as far as I can see is that it allows much higher component density compared to through-hole parts, you can put stuff
By
Roy J. Tellason, Sr.
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#99256
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