On 14/05/2020 12:41:05, AnthonyL wrote:
On Wed, 13 May 2020 13:17:15 -0700 (PDT), wrote:

On Wednesday, 13 May 2020 12:47:09 UTC+1, AnthonyL wrote:

I have an old battery (6 x D cells) torch which has a fluorescent
tube, a spotlight and a flashing light behind a red (plastic) glass.

So THAT'S where it went. If you ever come round maybe you could bring it back


The torch also has a DC power input of unspecified voltage which then
runs into some circuitry.

same as the battery, 9v. Polarity matters for the fl tube, and probably for the flasher. You haven't just given it the wrong polarity?



At this stage I don't know, I've assume centre = +ve but there is no
indication on the socket. As also I'm assuming 9v because that is 6 x
"D" at 1.5v ea.

I guess I'll lose nothing if the fluorescent tube isn't in by rigging
up a reverse polarity connection or clip a PP3 in where the 'D' cells
go and see which way round things are at a bulb.

There will be an inverter to power the tube. Reverse polarity might well
damage the inverter.