U2100B-MFP Datasheet, PDF (6/13 Pages) List of Unclassifed Manufacturers – Timer Control for Triac and Relay

α_min Operation
Selection condition (Figure 7):
-V₄ = 6.5 to 7.8 V +V₄ = internal limitation
R_αmax
=
R_sync
--------------³---^.--⁶-----^V----------------
V_R(peak) – 3.6 V
R_αmin
=
R_sync
---------------¹---⁰-----^V-----------------
V_M × 2 – 10 V
V_R(peak) is the peak voltage of the remaining phase angle, which should be high enough
to generate the supply voltage, V_S.
Figure 7. α_min Operation (Two-wire Operation)
D₁
2
IN 4007 C₀
R₀
Z
-V_S
L
C₁
22 V
4
Sync
R_α
3
Output
1
GND
R_sync
1N4148
6.8 V
R_G
I_G
V_M
230 V~
V_R(peak)
N
C₁ =
C_o =
R_o =
R_sync =
R_α =
R_G =
D₁ =
100 µF/35 V
0.33 µF/250 V ~
390 Ω
220 kΩ
10 kΩ
390 Ω
IN 4007
6 U2100B
4769B–INDCO–12/04