[T2] Gas gauge
robtmann7 at gmail.com
Wed Dec 4 01:24:06 MST 2013
Thanx for these insights. I'm sure I'm not the only one
ignorant of this device within the VW gauge/sender circuit.
>:-0 the vibrator is actually an electrical mechanical switch that
>regulates the voltage to the gauge, and in doing so.. it sort of
>buzzes ... or vibrates,
I've never heard such sounds from my dash; but that may be on
account some other sounds are swamping them :-|
>some ingenious electronics wizard figured out how to make one from
>solid stage device .. and they stuck in a zener diode to regulate
My primitive grasp of electronics implies this would be a key
device (when it became available - late 1960s?) in voltage
stabilisation lately. But how will V-stabilisation prevent sticking
of the fuel gauge?
> altho that style doesn't vibrate... but it still keeps the needle
>from getting stuck ! ;)
What is the cause of the sticking?? I am still sore at what
it cost me.
>remember the old generator voltage regulator... same thing ,, a coil
>that moves a switch .. which opens and closes the circuit to keep
>the voltage stable..
I hate those devices, which have caused me many frustrations
esp on Jawas (notorious PAL electrics) but also Lucas The Prince of
I still don't really understand the bastards, but they are
not merely V-stab. They somehow take account of the voltage
'currently' <:-| across the battery, don't they?
I can see the sods now: a L-shaped 'soft iron' "armature"
trembling according to the A in a solenoid, making/breaking a pair of
points which arced, soon wrecking themselves by transfer of material
across the points, esp if a mysterious wire-wound resistor were
>sooo... it is a stabilizer... regulator,,,
The Lucas & PAL regulators purported, I believe, to regulate
the V presented to the battery from the generator.
How could such a complex high-maintenance electromechanical
device be reqd for a humble 12V gauge?
Anyhow, I have found it in the official 'Bentley' schematic
for 1973; a 'points' symbol in series with the gauge.
>----- Original Message ----- From: "Robert Mann" <robtmann7 at gmail.com>
>>Now what can we learn please about this "vibrator"? I don't dare
>>to Search on that term :-[ - can we not find a different name? :-D
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