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1. 08:32 AM - Replace Wing Tip Strobes (Ron Koval)
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| Subject: | Replace Wing Tip Strobes |
Pulsar Friends,
Well my Magnum Dual strobe power supply died. I tried trouble shooting it but
without a schematic it was kind of difficult. Using my oscilloscope, I was able
to trace that allot of the circuitry appeared to be working, but gave up and
then discovered that a replacement unit was $140.
I was never impressed with the light output of the Magnum system so I opted to
build another dual flash circuit I showed driving a couple of 1156 LED bulbs about
3 or 4 years back at one of our reunions. That experiment ended up in Bondo
Bob's Pulsar.
I finished it all up this weekend and I used two JDM Astar 800 lumen (33 AX-2835
white LED ciips) LED bulbs (about $18 including shipping) in two $4 1156 bulb
sockets from the local auto supply to retrofit the existing wing tip strobe.
Built the circuit for about $20 (including the most expensive part, $6 for the
metal box). The circuit outputs can source a continuous load of 0.6amps and
when I tested the LED bulbs I used, either one would draw only a little over
0.4amps. The timer and counter that drives the alternating dual flash, turns
on the bulbs exactly 40% of the time so only during that time does the Pulsar's
electrical system get a 0.4amp drain or load. The timer is adjustable and
I adjusted mine to a relatively slow rate so the LED bulbs have a good on time
which provides allot of light energy. I have to believe that I have more than
doubled the light energy, and overall brilliance of my wing tip strobes and
at the same time taken the near
2amps of the Magnum down to less than 0.2amp average (as well as about a third
the size of the power supply/driver enclosure).
Attached are some pictures.
Best regards,
Ronko
N1037L
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