Article View: sci.electronics
Article #18019Re: How do you build phone off-hook indicator
From: Robert McCaul
Date: Sun, 13 Sep 1987 03:12
Date: Sun, 13 Sep 1987 03:12
51 lines
2510 bytes
2510 bytes
In article <2172@ihlpf.ATT.COM>, dunn@ihlpf.ATT.COM writes:
>
> This must be a common annoying occurence in many households, picking up the
> phone to make a call only to hear a conversation already taking place, saying
> "sorry....", and not knowing when to pick up again.
well in my house we had a great remedy for the problem...
whenever my dad wants to use the phone, he picks it up and says,
"GET OFF THE PHONE, I WANT TO USE IT NOW!!"
this goes over *real* good with others ;-)
but i do have him trained not to pick up the reciever when i am
on the computer, he will come in and tell me faithfully, (set your
rolex by it) that his girlfriend will be calling at 9:30, and could
i please be done with the computer by then..this usually happens at
9 or so, now on to more funnies...will this still work?
(oh shame on you for digging up the past!!)
/ S1
-------/ ----
RED | |<--R2 goes here
- | R1 |
O-----------------|-----^^^^^^--|-----------O--\
| | \
| C1 | \PHONE
------| |------ /
/
/
O---------------------------------------------/
+
GREEN
S1=SPST
R1=10k .5 watt
R2=10 resistor (listed as brown-black-black)
C1=100 microfarad electrolytic @ 50 volts
S1 should be opened for incoming, and closed for outgoing.
this is from...yep you guessed it..."Steal this book"
(ok so i collect old things...)
it is supposed to cause a payphone to barf out the money when someone
calls your house at a predetermined time.
these things always have my curiousity going.
i figure by now the problem is solved (20 year old book)
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Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: arc1-ca.pugleaf.net!utzoo!mnetor!uunet!nbires!hao!boulder!sunybcs!rutgers!ucla-cs!zen!ucbvax!ucdavis!uop!robert From: robert@uop.UUCP (Robert McCaul) Newsgroups: sci.electronics Subject: Re: How do you build phone off-hook indicator Message-ID: <527@uop.UUCP> Date: Sat, 12-Sep-87 23:12:17 EDT Article-I.D.: uop.527 Posted: Sat Sep 12 23:12:17 1987 Date-Received: Sun, 13-Sep-87 19:49:17 EDT References: <2172@ihlpf.ATT.COM> Organization: University of the Pacific, Stockton, CA Lines: 51 Summary: well...