LED S-Meter Schematic
LED S-Meter Schematic
Looking for a schematic for a LED S-meter. Would like to have one to replace a no working needle type of s meter.
Re: LED S-Meter Schematic
Would that be a bar graph or a digital readout (like a clock)?kb3ejv wrote:Looking for a schematic for a LED S-meter. Would like to have one to replace a no working needle type of s meter.
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BAMMMMMMMM. . . . . .!!!
KB3ejv. . . . . .meet. . . . . N6ZAV
Considering a Bar indicator being satisfactory and that you REALLY don't need a digital. . . .S9 + .1596. . . .readout,
( me. . . . I don't like bobbling digits) .
A 40 Segment LED Bar S-Meter (or less ...if you scale down some decades, but, what the heck, why not go for it. . .the WHOLE enchilada !
Info Location:
http://www.qsl.net/n6bg/thunt/ledsmtr.html
73's de Edd
[email protected] ..........(Interstellar ~~~~Warp~~~Speed)
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<b>If things get any worse, I'll just have to ask you to stop helping me. </b>
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BAMMMMMMMM. . . . . .!!!
KB3ejv. . . . . .meet. . . . . N6ZAV
Considering a Bar indicator being satisfactory and that you REALLY don't need a digital. . . .S9 + .1596. . . .readout,
( me. . . . I don't like bobbling digits) .
A 40 Segment LED Bar S-Meter (or less ...if you scale down some decades, but, what the heck, why not go for it. . .the WHOLE enchilada !
Info Location:
http://www.qsl.net/n6bg/thunt/ledsmtr.html
73's de Edd
[email protected] ..........(Interstellar ~~~~Warp~~~Speed)
[email protected]........(Firewalled*Spam*Cookies*Crumbs)
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<b>If things get any worse, I'll just have to ask you to stop helping me. </b>
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That's not an S-Meter as defined by theEdd wrote:A 40 Segment LED Bar S-Meter (or less ...if you scale down some decades, but, what the heck, why not go for it.
IARU, it's a blinky lights box.
Here's the required S-Meter response:
Code: Select all
S-reading EMF (μV 50Ω) dBm dB above 1uV
S9+10dB 160.0 -63 44
S9 50.2 -73 34
S8 25.1 -79 28
S7 12.6 -85 22
S6 6.3 -91 16
S5 3.2 -97 10
S4 1.6 -103 4
S3 0.8 -109 -2
S2 0.4 -115 -8
S1 0.2 -121 -14
LM3916-1 ASSP IC for a VU meter (i.e. 3dB/step log
response). Both the LM3914 and LM3916 were
made obsolete some years ago.
Right-0. . . . on the persons erroneous selection of the sole I.C. required . . . . he could only have been MORE in coincidence with the eventual result that you suggested, should he have opted on using a
LP3943 in the application.
http://www.national.com/pf/LP/LP3943.html
73's de Edd
[email protected]</a> ..........(Interstellar ~~~~Warp~~~Speed)
[email protected]</a>........(Firewalled*Spam*Cookies*Crumbs)
<b>A flying saucer results when a nudist spills his coffee on his lap.</b>
Whut you talkin' 'bout, Willis. . . .er. . .FlacDyer
Repeat. . . .
<b>If things get any worse, I'll just have to ask you to stop helping me. </b>
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LP3943 in the application.
http://www.national.com/pf/LP/LP3943.html
73's de Edd
[email protected]</a> ..........(Interstellar ~~~~Warp~~~Speed)
[email protected]</a>........(Firewalled*Spam*Cookies*Crumbs)
<b>A flying saucer results when a nudist spills his coffee on his lap.</b>
Whut you talkin' 'bout, Willis. . . .er. . .FlacDyer
Repeat. . . .
<b>If things get any worse, I'll just have to ask you to stop helping me. </b>
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If the author's intention was a string of blinky lights,Edd wrote: Right-0. . . . on the persons erroneous selection of the sole I.C.
that IC was a valid selection for 1997 (date on your
link). I merely pointed out that National had redone
the part with a different suffix as the original is now
obsolete.
Yes, I'm aware of National's LED flasher IC offering,Edd wrote: he could only have been MORE in coincidence with the eventual result that you suggested, should he have opted on using a
LP3943 in the application.
but I took the OP's request to be a serious question.
BTW, some of your fonts appear to be of different sizes,
are you shouting at us?
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