Seems so, the reason I thought of it was I only brought a PP7 last year , I bought it from a high street sweetshop in colchester about £8 I recall.
It was for an old back door alarm, consisting of a door contact, key switch and small buzzer.
light to run off a battery
- Thread starter mattym
- Start date
Seems so, the reason I thought of it was I only brought a PP7 last year , I bought it from a high street sweetshop in colchester about £8 I recall.
It was for an old back door alarm, consisting of a door contact, key switch and small buzzer.
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do you think this would be worth giving a go?
Well, it certainly should work initially. Whether you'll get anything like 60 hours before the battery voltage falls too low for the LED lamp is an unknown, at least as far as I am concerned!
Kind Regards, John
Good grief - I seem to recall them being about 2 shillings (aka 10p)
Kind Regards, John
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Blimey.
But D cells probably have the lowest £/mAh.
Widely, and also widely available are new torches/lanterns which use them. Maybe not easy to use for this because of the spring terminals - a 915 or 918 would be better.
But D cells probably have the lowest £/mAh.
Good grief - I seem to recall them being about 2 shillings (aka 10p)
Kind Regards, John
You get 40p scrap for a rechargable panel battery now
To make this work is it as simple as wiring a bulb a battery and a switch together or am I missing something?
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