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[OM] Re: Indicator bulb for the Olympus TE-II Transformer

Subject: [OM] Re: Indicator bulb for the Olympus TE-II Transformer
From: Tim Hughes <timhughes@xxxxxxxx>
Date: Thu, 11 May 2006 17:09:46 -0700 (PDT)
Or replace with 2 RED LED's and a resistor so it never needs replacing again.  
The LEDS are
polarised, so you need to connect them back to back to protect them from 
reverse voltage and then
put a resistor in series with the two back to back LEDS, so you get a permanent 
replacement pilot
lamp. The resistor needs to be about 180 Ohms and rated at,1/4 or 1/2W, but 
anywhere from 150 to
470 Ohms should work. 
Tim Hughes

--- Mark Dapoz <md@xxxxxxxxxxxx> wrote:

> On Thu, 11 May 2006, Alan Wood wrote:
> 
> > A visitor to the Olympus macro part of my website has asked if I know the
> > specification of the subminiature screw-based bulb under the red plastic bit
> > on top of this transformer.
> 
> It's probably just a regular 6V incandescent bulb, there isn't much inside
> the TE-II.  It's just a big transformer with a wiper blade on it to vary the
> voltage.  They don't even bother to convert it to DC!  Any good electronics
> shop should stock a number of 6V bulbs.
>                                               -mark
> 
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