TEA1007 Temic Semiconductors (acquired by ATMEL Corporation), TEA1007 Datasheet - Page 6

• Manufacturer Part Number: TEA1007
• Description: Simple Phase Control Circuit
• Manufacturer: Temic Semiconductors (acquired by ATMEL Corporation)

The timing switch using the TEA 1007 permits two-phase
operation of loads with conduction angle ö adjustable as
required (see figure 6).
Phase 1:
ö
Period t = 5 to 320 sec
Phase 2:
ö
Period t = optional, or up to the pressed time of switch S
Phase 1 begins as soon as the mains voltage is applied.
The maximum angle of conduction
by means of R
TEA1007
6 (8)
=
=
ö
ö
min
max
21
. The timing circuit comprises T
adjustable with R
adjustable with R
adjustable with R
ö
max
Figure 7. Fading circuit for manual operation
can be adjusted
1
, T
2
21
22
20
, Z
1
,
C
increases, the current through Z
potential at the emitter of T
current through Z
conduct. The potential on R
conduction angle
adjustable by means of R
The transition from
following the adjustment of R
The time constant of Phase 1, which is also determined by
R
before the end of the time constant, a period equal to the
complete time-constant is added to the time already run.
The circuit is powered direct from mains via D
every negative half-cycle. C
voltage which settles at a level of ca. 15.5 V.
3
22
, begins with the release of key S. If S is pressed again
and R
22
. As the voltage to which C
1
ö
ö
max
becomes zero, T
TELEFUNKEN Semiconductors
decreases to the value
20
to
2
ö
(Phase 2).
has climbed so high that the
min
22
1
21
and takes ca. 2 to 20 secs.
takes place continuously
smooths the operating
1
therefore drops. The
decreases. When the
Rev. A1, 28-May-96
1
can no longer
3
is charged
1
and R
ö
min
1
in
,