Hi,
Thanks for the reply BrianG. Your description of the type of gauges I have was exact.
And yes, it is an old vehicle, an Aussie built 1978 Holden UC Torana. And I'm pretty sure the voltage regulation is done by an IC, I can't read a model number, but it's definately in a TO-220 3-pin IC...
Howdy all,
The vast majority of the threads in here are well beyond my comprehension, so please excuse my naive, and somewhat simplistic questioning.
My query relates to old automotive gauges such as Fuel and Temperature gauges, that utilise variable resistors at the earthing point, such as...
Thanks for the reply,
I think my question was a little vague, but I think you put me on the right track...
As for the practical point...very little of what I do in my spare time is 'practical'...and I've found doing things that you have no idea about, is the best way to learn things you didn't...
Howdy,
I'm attempting to build a Temperature Sensor for a car radiator using the LM35 from National, to feed a linear temperature/voltage signal to a Digital Panel Meter. All works well as far as I can tell except once we start getting to below zero degrees Celsius.
The LM355 puts out 10mv per...
I too have restored many an old engine, and whilst I agree, that in most cases, any form of 'dispersent' will not "suddenly and totally clean and release years of built up varnish and sludge", I have seen it to be the precursor of many troubles.
The Diesel specific 'detergents' are...
Also be weary of detergent additives in Diesel oils. Most modern 'clean' engines can handle them but I would avoid them in older models with high-mileage engines. Most of these engines require the years of build up on seals and bearings to actually remain 'tight'...the detergents in Diesel oils...
I've come across some 24 volt 10" fluorescent units from a truck, which ran on a 24 volt electrical system. What is the best way to adapt these to a standard 12 volt auto system? Should I use some form of voltage doubler? Or can I just modify the existing internal circuitry of the fluoros...
