On 29/09/2017 08:19, Ash Burton wrote:
On 29/09/2017 04:25, Bill Wright wrote:
Warning: LED torches and cap lamps can cause a strobing effect that
can make rapidly turning things like drill chucks and grinder wheels
seem to be turning slowly or not at all.

Bill

A useful tip, this was a well known issue in factories and workshops
with fluorescent lighting but I'd not heard it before with LED lights.

It can be the case with mains powered LED lamps... the frosted glass
type usually less so since they tend to run high frequency switching
PSUs. The filament style sometimes just have the four filaments run in
series with a rectifier - so they can strobe at 100Hz.

Battery ones ought to be ok, unless they are they type that uses a DC/DC
converter to step up the battery voltage.

--
Cheers,

John.

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