Re: Cleaning fluids

mark.howard10@xxxxxxxxxxxxxx wrote:

>
> On 17-Dec-2005, "Peter Neill" <panuno95-ukrec@xxxxxxxxxxx> wrote:
>
>> That's a thought. Do you know if they come in 110V? The tank is an
>> ex-MOD unit and runs off a transformer, so ideally I would like to run
>> a switch for the heaters off the same power supply.
>
> I'm sure they do but you might have to place special order or source one
> from abroad (they're pretty light so shipping costs should not be an issue).
> Alternatively, I guess you could use some sort of wizzy relay arrangement to
> switch the 240V onto the heater pad when the 110V was switched to the tank.

It's a low power resistive load with sufficient hysterisis - so put a
diode/rectifier in the heater circuit.

A 1N4005 (1A 600V) costs about 10p, good for up to 50W - a 1N5406 (3A 600V)
will do for up to 150 W, and costs about 20p.

No heatsinks or fans will be needed at these ratings, but try not to enclose
them too much - give them some space and they will last forever.


--
Peter Fairbrother

.

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