Thanks to Marvin and Jeff for the information about the HP LaserJet
P1606dn. We'll work on it.

Here is a question about fluidic connectors. Mechanical rather than
electrical. Some readers work with medical equipment and may be able
to help.

Two connectors.
https://www.baycorporation.com/products/schrader-style-quick-connects/medical-air/sh-16-2s
https://www.baycorporation.com/products/schrader-style-quick-connects/nitrogen/sh-12-2s

In the photographs, they appear identical. Aside from the markings,
is there a difference?

A sales rep. commented that the male N2 is sometimes connected to the
female air connector.

Are the male connectors interchangeable connecting to the female air
and nitrogen connectors?

Thanks, ... P.

On 5/22/2024 7:48 PM, peter@easthope.ca wrote:
> Thanks to Marvin and Jeff for the information about the HP LaserJet
> P1606dn. We'll work on it.
>
> Here is a question about fluidic connectors. Mechanical rather than
> electrical. Some readers work with medical equipment and may be able
> to help.
>
> Two connectors.
> https://www.baycorporation.com/products/schrader-style-quick-connects/medical-air/sh-16-2s
> https://www.baycorporation.com/products/schrader-style-quick-connects/nitrogen/sh-12-2s
>
> In the photographs, they appear identical. Aside from the markings,
> is there a difference?
>

The only difference I can see is the SH-12 is for nitrogen,
the SH-16 is for air.
Ed

> A sales rep. commented that the male N2 is sometimes connected to the
> female air connector.
>
> Are the male connectors interchangeable connecting to the female air
> and nitrogen connectors?
>
> Thanks, ... P.
>

In article <v2qo44$2f14t$1@news.eternal-september.org>, ehsjr
<ehsjr@verizon.net> wrote:
> The only difference I can see is the SH-12 is for nitrogen, the
> SH-16 is for air.

Understood. One is marked "Air" and the other "N2".

A few microns or thousands of an inch can block interchangeability.
Obvious when fitting parts; not in photographs. Fitting a UNC nut to a
UNF screw is a more extreme example.

Thx, ... P.

On 29 May 2024 at 18:56:33 BST, "peter@easthope.ca" <peter@easthope.ca> wrote:

> In article <v2qo44$2f14t$1@news.eternal-september.org>, ehsjr
> <ehsjr@verizon.net> wrote:
>> The only difference I can see is the SH-12 is for nitrogen, the
>> SH-16 is for air.
>
> Understood. One is marked "Air" and the other "N2".
>
> A few microns or thousands of an inch can block interchangeability.
> Obvious when fitting parts; not in photographs. Fitting a UNC nut to a
> UNF screw is a more extreme example.
>
> Thx, ... P.

One reason for labelling them and keeping them separate is that the oxygen one
has to be kept free of inflammable lubricants etc.

--

Roger Hayter

Phil Hobbs <pcdhSpamMeSenseless@electrooptical.net> writes:

> On 2023-03-01 09:06, Daniel wrote:
>> Hi folks I'm really new with electronics. Doing a massive project for a
>> retro computer system and, as a prong of this project I'm attempting to
>> locate a modern equivalent of the board components. Enter the tantalum
>> capacitor. Having gone to digikey, mouser, and newark none of them seem
>> to have the item I'm looking for in stock.
>> What are the rules about alternate values? The tantalum cap I'm
>> looking
>> for, according to the service manual, has the following rating:
>> 1uf,10v, +-20%.
>> The DIP style cap that the board uses isn't in stock anywhere so
>> would I
>> be able to substitute this cap for 1uf, 20v, +-20%?
>> Thanks,
>> Daniel
>>
>
> Going up in voltage rating is fine. There might possibly be an issue
> if the effective series resistance (ESR) is higher, but all solid
> tants have highish ESR anyway, so it's unlikely to make a noticeable
> difference.
>
> (Polymer tants are a different animal.)
>
> Cheers
>
> Phil Hobbs

I know it's really late in the game but I wanted to thank everyone for
their patient answers.

Alot has been going on in real life and had to take a long long break
from the newsgroups due to that, and as well as forgetting to check in.

I'm catching up on hundreds of messages on newsgroups and on IRC and in
the BBS scene.

I did order my components though, but haven't made much traction on the
project I posted about.

Someday.

In sci.electronics.repair, on Mon, 10 Jun 2024 12:44:41 -0400, micky
<NONONOmisc07@fmguy.com> wrote:

>Does anyone sell an add-on AVC or AGC, automatic volume control that can
>be used with an existing one-piece radio?
>
>I bought an internet radio and in some of the stations, the commercials
>are so loud they wake me up if I've fallen asleep, or near sleep, and if
>I turn down the volume, I can't hear the program. I listen to talk
>radio and in another channel, the host is loud enough but everyone else
>is much quieter, and sometimes the host gets closer to the microphone
>and it's too loud again.

The first internet station I had a problem with was CNN. Would CNN live
be what's called a streaming service??? I hear that term often but I
have almost no idea what it means. What about the fact that I
listened to CNN via iHeartRadio. iHeartRadio is a streaming service,
right?

Because a proposed law would regulated the volume of commercials on
"streaming services".

https://www.congress.gov/bill/117th-congress/senate-bill/4173
This bill applies certain requirements concerning the volume of
commercials to video streaming services that are supported by
advertisements (e.g., Hulu). It also modifies enforcement related to
those requirements.
Current law requires commercials transmitted via broadcast, cable, and
satellite television to have the same average volume as the underlying
programming. Under this bill, the Federal Communications Commission must
apply through rulemaking similar requirements to ad-supported video
streaming services.

https://www.whec.com/local/good-question-why-are-commercials-louder-than-the-program-on-tv/
"There is a law meant to regulate this called the Calm Act and it was
passed by Congress in 2010. We (WHEC)also have a system in place to
monitor and record our volume levels, so they don’t violate the law.

The Calm Act requires commercial noise levels to be about the same as
the program. Since it passed, it has been criticized by viewers who say
it’s not being enforced.

In May 2022, another law was introduced addressing these complaints.
It’s called the Calm Modernization Act. It applies to streaming services
and also modifies the enforcement of the original law.

The Federal Communications Commission is responsible for enforcement.
Right now, the FCC uses a complaint-driven enforcement process. If the
Calm Modernization Act passes, there would be a greater penalty from the
FCC for violations."

>I'd like to cut the wire to the speakers, which are built into the
>radio's cabinet, and insert a device or circuit that will act as an AVC.
>Any suggestions?
>
>I presume that if I bought a different internet radio I'd have the same
>problem, or is it possible the AVC in this one is broken?
>
>P.S. googling found this, Add-on: AGC and Speech Enhancement
>https://www.totalrecorder.com/AddOnAGC.htm , which sounds perfect, but
>it's software, and I need hardware.

On 6/11/2024 12:15 AM, micky wrote:
> In sci.electronics.repair, on Mon, 10 Jun 24 22:26:34 UTC, Judge Arthur
> Enron <judge@get.trump> wrote:
>
>> micky wrote:
>>> Does anyone sell an add-on AVC or AGC, automatic volume control that can
>>> be used with an existing one-piece radio?
>>>
>>> I bought an internet radio and in some of the stations, the commercials
>>> are so loud they wake me up if I've fallen asleep, or near sleep, and if
>>> I turn down the volume, I can't hear the program. I listen to talk
>>> radio and in another channel, the host is loud enough but everyone else
>>> is much quieter, and sometimes the host gets closer to the microphone
>>> and it's too loud again.
>>>
>>> I'd like to cut the wire to the speakers, which are built into the
>>> radio's cabinet, and insert a device or circuit that will act as an AVC.
>>> Any suggestions?
>>>
>>> I presume that if I bought a different internet radio I'd have the same
>>> problem, or is it possible the AVC in this one is broken?
>>>
>>> P.S. googling found this, Add-on: AGC and Speech Enhancement
>>> https://www.totalrecorder.com/AddOnAGC.htm , which sounds perfect, but
>>> it's software, and I need hardware.
>>>
>>
>> Raspberry PI 4 -
>> Auto Volume Control & EQ setup for CABLE TV -
>> Keep the volume same on all channels
>>
>> https://www.youtube.com/watch?v=f3X01edbZk8
>
> it's something related to what I want, but it's software.
> Ralph's and Mighty's suggestions are also appreciated, but not close
> enough.
>
> Changed search words and found this
> https://www.amazon.com/LEMONKTV-Control-Device-Karaoke-Machine/dp/B07H49JB8S/ref=sr_1_1
> Not just for Karaoke. Small but still too big for the speaker space,
> but I can mount it outside the radio, cut the wires to the speaker(s)
> and connect to each part half of a cable with RCA jacks on the end.
>
> The ratings are few and from 1 to 5. $50.
>
> The sound engineer who gave it 1 star says the only other model is
> disconintued but another reviewer started at 5 stars, went down to 1,
> then said that Rolls SL33B was better. It's 3.9 starts on 131 reviews
> for $89. Still not that high, but sounds better than nothin'. If I can
> go to bed listening to the radio, it will be worth it. It has some sort
> of gain control and a threshold adjustment, and a "red LED for general
> indication of the amount of gain reduction in the circuit". The first
> one didn't have any of this.
>
> https://www.amazon.com/rolls-SL33B-Stereo-Program-Limiter/dp/B004GK7PAI/ref=sr_1_1
> Called a program limiter for some reason. It's a Utah company. Maybe
> they speak differently out there. I guess I'll google that to see if
> there are others. yes, there are, at goknight.com using the term
> compressor/limiter -- must be a technical name -- but it's $208 or 289.
>
> When I got to the product website itsself it says "helps control the
> level over loud, obnoxious commercials, for example." That's half of
> what I had in mind, and the other half is similar.

Your desired solution may fit into the "too hard" category. The
pragmatic solution is to find something else to lull you to sleep.
Consider a white noise machine for example. I haven't checked, but
there may even be a smartphone app for what you want with a built-in
timer so you don't drain the battery all night. There are also apps
that provide restful sound tracks to aid in meditation. Combined with
using the "do not disturb" setting on the smartphone to avoid undesired
audio notifications, it just may do the trick. There may even be
internet "stations" that provide wall to wall soothing music that
wouldn't require any additional equipment. Think outside the box when
plan A doesn't seem feasible.