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02 sensor LED readout schematic (fwd)
Hairy green toads from Mars made AUDIDUDI@delphi.com say:
> From daemon Tue Oct 3 09:08:00 1995
> From: AUDIDUDI@delphi.com
> Date: Tue, 03 Oct 1995 09:02:56 -0400 (EDT)
> Subject: 02 sensor LED readout schematic
> To: QUATTRO@coimbra.ans.net
> Message-Id: <01HVZXUB9UIQ9209ZK@delphi.com>
> X-Vms-To: INTERNET"QUATTRO@coimbra.ans.net"
> Mime-Version: 1.0
> Content-Type: TEXT/PLAIN; CHARSET=US-ASCII
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> Sender: quattro-owner@coimbra.ans.net
>
> The following has bounced around several lists but never, to my knowledge,
> been posted here. I have not yet built one myself (too busy!) and I can't
> comment as to whether it works as claimed or not...
>
> [included file]
>
> Originated-By: "Andrew Dennison" <ADEN@mechman.mm.swin.edu.au>
>
> I just found a simple circuit for an A/F meter. It uses 1 IC, 10
> LEDS and 2 resistors. Here it is:
> ___+12 Volts
> Sensor ----|5 3|------|
> | 10|--|<--| LED1
> 5K adj | 11|--|<--|
> GND--/\/\--|6 12|--|<--|
> | 13|--|<--|
> 680 | 14|--|<--|
> GND--/\/\--|7 15|--|<--|
> | 16|--|<--|
> |--|8 17|--|<--|
> |--|4 18|--|<--|
> |--|2 1|--|<--| LED10
> | LM3914
> GND
>
> Simply adjust the 5K pot so the reference voltage is 1V (at pin 6).
> Connect 12Volts, GND and the Lambda sensor and you're ready to go. I
> guess the component cost would be 5-10 dollars. I haven't built it
> yet as I only saw the schematic today.
>
>
> /| | | |\ | |\ | | |\ | AudiDudi@delphi.com
> /-| | | | | | = | | | | | | | Jeffrey Goggin
> / | |_| |/ | |/ |_| |/ | Scottsdale, Arizona
--
Andrew L. Duane (JOT-7) duane@zk3.dec.com
Digital Equipment Corporation (603)-881-1294
110 Spit Brook Road http://www.zk3.dec.com/~duane
M/S ZKO3-3/U14
Nashua, NH 03062-2698
Only my cat shares my opinions, and she doesn't know how to forward mail.