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TEA1007 の電気的特性と機能

TEA1007のメーカーはTEMIC Semiconductorsです、この部品の機能は「Simple Phase Control Circuit」です。


製品の詳細 ( Datasheet PDF )

部品番号 TEA1007
部品説明 Simple Phase Control Circuit
メーカ TEMIC Semiconductors
ロゴ TEMIC Semiconductors ロゴ 




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TEA1007 Datasheet, TEA1007 PDF,ピン配置, 機能
Simple Phase Control Circuit
TEA1007
Description
Integrated circuit, TEA1007, is designed as a general
phase control circuit in bipolar technology. It has an
internal supply voltage limitation. With typical 150 mA
ignition pulse, it is possible to determine the phase-shift
of the ignition point by comparing the mains sync. ramp
voltage with a preset required value. It generates a single
ignition pulse per half wave; therefore, it is suitable for
capacitive and inductive loads in low cost applications.
Features
vD Current consumption 2.5 mA
D Ignition pulse typ. 150 mA
D Voltage and current synchronization
Block Diagram
D Internal supply voltage control
Package: DIP8
Rv = series resistance
Figure 1. Block diagram with typical circuitry
TELEFUNKEN Semiconductors
Rev. A1, 28-May-96
1 (8)

1 Page





TEA1007 pdf, ピン配列
TEA1007
In indication as to whether load current is flowing or not
is provided by the triac itself. When the triac is ignited,
the voltage at electrode H1 drops from the instantaneous
value of the mains voltage to approximately 1.5 V, the
value of the forward voltage of the triac. When the load
current drops below the hold current of the triac towards
the end of the half-cycle, VH1 again returns to the instan-
taneous value of the mains voltage. The current detector
with its input at Pin 4 now controls this triac voltage and
blocks the pulse generator via G1 and S1 by increasing the
reference voltage as long as the triac is conducting. As, in
the case of a resistive load, the triac may be extinguished
shortly before the zero transition of the mains voltage –
when the load current drops below the hold current – the
RS flip-flop must prevent any possible second ignition
pulse from being generated.
Additional Function
An internal supply voltage control circuit insures that
output pulses can be generated only when the supply
voltage required for operation of all logic functions is
available.
Series resistance R1 can be calculated approx. as follows:
+R1 max
0.85
VM min
2
– VS max
Itot
Itot = IS + IP + Ix whereas
Itot = Total current consumption
IS = Current requirement of the lC
IP = Average current requirement of the triggering pulses
Ix = Current requirement of other peripheral components
95 11359
Figure 4. Functional diagram for resistive load and amin
Determination of Gate Series
Resistance, Firing Current and Pulse
Width
Firing current requirement depends upon the triac used
which can be regulated with series resistance as given
below:
[RG max
12.5 V – VG max
IG max
– 110 W
+IP
IG
T
tp
[ 8 ms
tP nF Cö
whereas:
VG =Triac’s gate voltage
IG =Triac’s gate current
IP =Gate current requirement – average
T =Period duration of mains frequency
tp =(firing) pulse width
Cö =Ramp capacitor
TELEFUNKEN Semiconductors
Rev. A1, 28-May-96
3 (8)


3Pages


TEA1007 電子部品, 半導体
TEA1007
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 = ömax
Period t = 5 to 320 sec
adjustable with R21
adjustable with R22
Phase 2:
ö = ömin
adjustable with R20
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 ömax can be adjusted
by means of R21. The timing circuit comprises T1, T2, Z1,
C3 and R22. As the voltage to which C3 is charged
increases, the current through Z1 decreases. When the
potential at the emitter of T2 has climbed so high that the
current through Z1 becomes zero, T1 can no longer
conduct. The potential on R21 therefore drops. The
conduction angle ö decreases to the value ömin,
adjustable by means of R20 (Phase 2).
The transition from ömax to ömin takes place continuously
following the adjustment of R22 and takes ca. 2 to 20 secs.
The time constant of Phase 1, which is also determined by
R22, begins with the release of key S. If S is pressed again
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 D1 and R1 in
every negative half-cycle. C1 smooths the operating
voltage which settles at a level of ca. 15.5 V.
Figure 7. Fading circuit for manual operation
6 (8)
TELEFUNKEN Semiconductors
Rev. A1, 28-May-96

6 Page



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共有リンク

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