Stupid Question Time

CarMichael Angelo

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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?
 
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killer5.0

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

John Dirks Jr

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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?
 

General karthief

wonder how much it would cost to ship you a pair
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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. :shrug:
 

jrichker

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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.
 
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Noobz347

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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.

:leaving:
 
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General karthief

wonder how much it would cost to ship you a pair
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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.
 

a91what

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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

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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
?temp_hash=dc11fcf473df24db1389df0d14f17f66.jpg


5 volt power supply...
Use either the top or bottom half of the diagram, you don't need both...
?temp_hash=dc11fcf473df24db1389df0d14f17f66.jpg
 

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Mustang5L5

i'm familiar with penetration
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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
 
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