Stupid Question Time

CarMichael Angelo · Oct 20, 2017

Im sitting here thinking.

Instead of installing some hokey looking T so i can install both temp senders in the same hole,.

Why cant i splice both the gauge, and ecu into the same sender?

a91what · Oct 20, 2017

Hmmm... maybe not sure if that will affect the resistance having 2 sources atratched without an opamp

I know who will know.... @jrichker

killer5.0 · Oct 20, 2017

Most gauges require their own dedicated sender....i know my autometer and dakota digital did...as stated above bc of the resistance

JD1964 · Oct 20, 2017

Is it important in this case to have both senders in referencing the same location? If not can you find two different locations and result in a cleaner look?

RaggedGT · Oct 20, 2017

Stupider question-Why are there two senders? Is it like a stock setup? One for the ecu, and one for the gauge?

General karthief · Oct 20, 2017

I'm thinking there is a difference in resistance between the two senders, they are in the same water flow right? Measure the resistance between the two senders when the engine is cold and you'll likely find they have different numbers, but what do I know.

jrichker · Oct 20, 2017

a91what said:
Hmmm... maybe not sure if that will affect the resistance having 2 sources atratched without an opamp

I know who will know.... @jrichker

A simple op amp would buffer the load, : see the PWM controller diagram I sent and look for IC7 input from ECT sensor; its output drives the 3 comparator IC's.

It is an op amp with 1:1 gain and a very high input resistance. One data line is a direct connection from the sensor to the computer. The op amp input connects into the sensor output in parallel with the data line that goes to the computer. Both circuits share the same signal ground.

You need to remember that a well filtered power supply is required for the op amp to keep the electrical noise out of the circuit. See the power supply diagram for the PWM controller for design details.

Noobz347 · Oct 21, 2017

jrichker said:
A simple op amp would buffer the load, : see the PWM controller diagram I sent and look for IC7 input from ECT sensor; its output drives the 3 comparator IC's.

It is an op amp with 1:1 gain and a very high input resistance. One data line is a direct connection from the sensor to the computer. The op amp input connects into the sensor output in parallel with the data line that goes to the computer. Both circuits share the same signal ground.

You need to remember that a well filtered power supply is required for the op amp to keep the electrical noise out of the circuit. See the power supply diagram for the PWM controller for design details.

I was going to say that.

cleanLX · Oct 21, 2017

ya, he beat me to it too...

General karthief · Oct 21, 2017

I can't find the 'what da hec he say' chapter in my electrical pictionary

CarMichael Angelo · Oct 21, 2017

I'll say,...where did he get the idea anything he says is simple?

General karthief · Oct 21, 2017

Main article: Operational amplifier
A non-ideal op amp's equivalent circuit has a finite input impedance, a non-zero output impedance, and a finite gain. This article illustrates some typical applications of operational amplifiers. A real op amp has a number of non-ideal features as shown in the diagram, but here a simplified schematic notation is used, and the reader is reminded that many details such as device selection and power supply connections are not shown. Operational amplifiers are optimised for use with negative feedback, and this article discusses only negative-feedback applications. When positive feedback is required, a comparator is usually more appropriate. See Comparator applications for further information.
Written by people that just wanted to confuse karthief and further prove he is, in fact a boob.

mikestang63 · Oct 21, 2017

no on a T. You will get bad readings.

a91what · Oct 21, 2017

I can draw up a solder together deal-e-o with a power supply needed for it(more soldering junk to junk) or you can run 2 senders

jrichker · Oct 21, 2017

a91what said:
I can draw up a solder together deal-e-o with a power supply needed for it(more soldering junk to junk) or you can run 2 senders

Buffer amplifer

5 volt power supply...
Use either the top or bottom half of the diagram, you don't need both...

CarMichael Angelo · Oct 21, 2017

jrichker said:
Buffer amplifer

5 volt power supply...
Use either the top or bottom half of the diagram, you don't need both...

Let's see...above is example of "hard to understand" exhibit A..

Or, below,......" hard to understand" exhibit B.

I can't read either..

Noobz347 · Oct 21, 2017

They're all the same character in horizontal rows.

Pretty sure is says, "**** you, round eye".

a91what · Oct 21, 2017

Use example A then grab the clean 5v output on the ms2 proto board.

CarMichael Angelo · Oct 21, 2017

a91what said:
Use example A then grab the clean 5v output on the ms2 proto board.

That's just it....I don't know what example A is telling me. What the hell are the curly topped dealies with the pointy tails?

Mustang5L5 · Oct 21, 2017

1 Mh inductors on top, with two different capacitors (10 and 0.1 mfd) on sides and grounding to classis on bottom

LM 7805 is voltage regulator

1n4003 is a diode

Stupid Question Time

CarMichael Angelo

my rearend will smell so minty fresh,

a91what

SendMeUrDataLog

killer5.0

JD1964

there is enough sticking out to grab on to

RaggedGT

Been here over a DECADE and still no CT

General karthief

wonder how much it would cost to ship you a pair

jrichker

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Noobz347

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cleanLX

General karthief

wonder how much it would cost to ship you a pair

CarMichael Angelo

my rearend will smell so minty fresh,

General karthief

wonder how much it would cost to ship you a pair

mikestang63

a91what

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jrichker

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CarMichael Angelo

my rearend will smell so minty fresh,

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a91what

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CarMichael Angelo

my rearend will smell so minty fresh,

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That is…until I whipped out my Bissell

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my rearend will smell so minty fresh,

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there is enough sticking out to grab on to

Been here over a DECADE and still no CT

wonder how much it would cost to ship you a pair

StangNet's favorite TOOL

Stangnet Facilities Maint Tech... Er... Janitor

wonder how much it would cost to ship you a pair

my rearend will smell so minty fresh,

wonder how much it would cost to ship you a pair

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Stangnet Facilities Maint Tech... Er... Janitor

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