Minolta XD - Page 24

21
9-4. Composition with exclusive strobo, and synchro circuit
Signal
circuit Vv
Voltage (output)
Har “4
1 V1
T Te
‘ 4
— T—e} T (interval)
Camera control signal
® +@ , Synchro switch
D
Qa Qa
D
Qn
1)
When
charge
voltage
stored
in
main
condenser
of
exclusive
strobo
(8668)
has
reached
the
2)
3)
4)
specified
degree,
constant
voltage
pulse
signal
is
given
to
camera
side
at
constant
inter-
val
from
signal
circuit
on
strobo
side.
When
signal
level
is
over
Vi,
Qa
is
ON.
So,
over-range
warning
(A)
is
lighted,
exposure
control
released
and
circuit
operated
at
X
sec.
time.
Also,
magnet
M3
is
kept
attracted
by
information
r.
When
signal
level
is
voltage
(V2)
which
turns
on
Qn,
over-range
warning
(A)
is
turned
off
by
information
q.
That
is,
over-range
(A)
is
turned
on
and
off
at
interval
(T)
as
illustrated
above.
When
first
curtain
has
completed
running
and
X-contact
turned
ON,
the
strobo
flashes
and
information
r
goes
out.
Then
magnet
M3
is
released
allowing
the
second
curtain
to
run.