21-04-2015, 03:53 PM
(20-04-2015, 04:38 PM)Mark Hennessy Wrote: Honestly, you need a lamp limiter, as I mentioned in post #4. Very simple to make, and will save your bacon! Plenty of explanation at the page I linked to.
The thing is, your step-down transformer (probably auto-transformer) will still be able to pass a reasonable current in fault conditions. Whereas the lamp limiter simply does its job. Don't plug the set in without one. Seriously.
Last night I was looking into this lamp in series precaution. If I'm not mistaken, you should be able to use a basic wall socket. So far as I can fathom, the 100 watt bulb is placed in the hot circuit and then voltage is tapped off the resistance it creates as in a voltage divider. When resistances are in series and resistance varies, so does the voltage drop. So, if current is rushing through the output valve, voltage will drop at the radio end and rise at the bulb end?
I've wired in sockets on my boat and linked two core and earth from socket to socket in a radial circuit. I'm assuming when you want to drop voltage, however, you would need to wire from the drop across the bulb and then to the appliance. I'm not really sure yet as I've not heard of this before but I will be sure to take up your advice on this when I come to power it up. I don't want to see my set go up in smoke for sure.
