Re: Alternative on Dash Clock Conversions

[Herb <zephyr9900@xxxxxxxxxxx>]

As I hit the send button a solution came to mind, if you built a circuit
like the gauge circuit, with a larger resistor for the clock voltage, you
could include a fan from a computer to cool the processors in the build over
the heat sink to keep things cool.

Herb 
 
-------Original Message-------
 
From: Herb
Date: 1/31/2009 12:17:21 PM
To: 1962to1965mopars@xxxxxxxxxx
Subject: Re: Alternative on Dash Clock Conversions
 
 
The clock is not creating the heat the resistor reducing 12v to 1.5v is the
culprit.  For example building the circuit to run the gauges needs a heat
sink for the resistor going from12v to 5v and it runs Hot.  The bottom line,
resistance = heat.  I would almost guess the extra heat generated dropping
to1.5v would cause damage to the dash if the heat sink was mounted on it.
With that big of drop you might look at mounting the heat sink to the fire
wall or something not affected by heat under the dash. Just my II.
 
Herb
St. Louis, MO.
 
-------Original Message-------
 
From: Dodger7998@xxxxxxx
Date: 01/31/09 10:51:13
To: 1962to1965mopars@xxxxxxxxxx
Subject: Re: Alternative on Dash Clock Conversions
 
 
really stretching my memory here, but would think that the value of the
resistor would be 7 times the resistance of the clock, and that there
combined
resistance would make the 8, and as far as the heat,,,,,I can not  believe
that
the power used by a clock would cause any amount of  heat,  surely there is
some one on the list that has been to school since I  have that could
clarify
this
 
 
In a message dated 1/31/2009 10:15:39 A.M. Central Standard Time,
pjlenn@xxxxxxxxx writes:
 
 
That's what I was trying to get to with the father-in-law.   How do you
calculate the value of the resistor needed?  But I  couldn't quite get
him to give me a straight answer.  So I looked  around a little in some
of my old stuff and found a slide type Ohm's Law  calculator.  It will
Give me the value of the resistor if I know the  voltage (12) and how
many milliamperes the clock will draw.  So,  would you then multiply the
value it gives you for the resistor x's 8 as  discussed in the previous
post?  I don't know.  Probably just  easier to grab a handful of
resistors and a voltmeter and experiment a  little.  If you used a higher
wattage resistor it might take care of  the heat issue.  A heat sink
would probably make everything last  longer.
 
Paul L.
'63 Sport  Fury
440/727
http://www.1962to1965mopar.ornocar.org/ml-lennemann63.html
 
[Non-text portions of this message have been removed]


----
Please address private mail -- mail of interest to only one person -- directly to that person.  I.e., send parts/car transactions and negotiations as well as other personal messages only to the intended recipient, not to the Clubhouse public address. This practice will protect your privacy, reduce the total volume of mail and fine tune the content signal to Mopar topic.  Thanks!

'62 to '65 Mopar Clubhouse Discussion Guidelines:
http://www.1962to1965mopar.ornocar.org/mletiq.html. 

This email was sent to: arc.6265@xxxxxxxxxxxxxx

u/?bUrDWg.bSONJP.YXJjLjYy



?p=TEXFOOTER