12 Volt
Strobe Circuit:
this circuit uses12V DC
instead od mains AC. This is
very good idea if you dont
want to mess with direct
mains voltage connected
circuit or you want to run
the stroboscope from
batteries.
: 08/05/99 EDN-Design Ideas
/ PDF contains multiple
circuits - scroll to find
this circuit.
Flash Slave
Trigger:
Flash slaves are used when
you need to
supplement1-flash unit
with1-or several more. This
slave trigger simply
triggers those other units.
It does this by "seeing" the
first flash (using a
phototransistor) and
triggering the other flashes
a few microseconds later.
The sensitivity of the
circuit is adjustable to
compensate for ambient light
or dimmer than usual master
flashes.
LED
Stroboscope:
This simple LED Stroboscope
circuit which I designed,
maintains constant
brightness of the LED at all
frequencies. This is
accomplished by duty-cycle
and pulse width control. It
is useful for measuring the
speed of motors. It can
easily be calibrated using a
watch so you don’t need a
frequency counter.