[Tech1] Today

[Keith Wicks]

The coloured bands on some modern miniature resistors are notoriously
difficult to read. Perhaps that's the case here. I suspect that the ohmic
values should both be increased by a factor of 10. The current values give
(assuming a maintaining voltage of 70 V for the neon bulbs) powers of about
1 W and 2 W in the resistors — quite enough to fry them. Values of 150 or
270 kΩ would seem more reasonable.
KW

On Fri, 12 Jun 2020 at 22:56, dave.mdv via Tech1 <tech1 at tech-ops.co.uk>
wrote:

> The other day I noticed that the neon 'ON' light in one of my Duraplug
> 4-way 13 amp. dis. boards wasn't on. Having dismantled it I found that
> the tiny neon bulb was black. It had a very small 27K. resistor in
> series with it. Searching my component store bulb drawer I found another
> neon the same size, with a 15K. resistor in series with it! Fitting it
> into the splitter was very fiddly and getting the correct length of wire
> was critical. Anyway, it is now fitted and working, so another success
> for Grandad! Some time ago Doreen gave me a small plaque which reads -
> 'Grandfathers are for Loving and Fixing Things' - I think I qualify for
> both! She also gave me another, I can't think why! Cheers, Dave
>
>
> >
> >
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