Power Supplies

1
Applications
Power Supplies
AC and DC variable-speed motor drives
Stepping motor controls
Welding power supplies
High frequency power supplies
Other types of large amplifiers
2
(No Transcript)
3
(No Transcript)
4
IGT Gate Current VGT Minimum Gate
Voltage IH Holding Current IL Latching
Current VBO Breakover Voltage vT
Anode-Cathode Voltage iAK Anode-Cathode
Current
5
(No Transcript)
6
(No Transcript)
7
(No Transcript)
8
(No Transcript)
9
(No Transcript)
10
Firing angle
11
Amethods of Turning on an SCR
Exceeding the forward Breackover Voltage
12
Amethods of Turning on an SCR
Anode
Gate
Leakage Current
Cathode
13
Amethods of Turning on an SCR
Rate of Voltage Changing
14
Amethods of Turning on an SCR
Gate Triggering
15
(No Transcript)
16
(No Transcript)
17
(No Transcript)
18
(No Transcript)
19
(No Transcript)
20
(No Transcript)
21
(No Transcript)
22
(No Transcript)
23
TRIAC
24
Structure, Internal Circuit, and Sumbol
25
(No Transcript)
26
(No Transcript)
27
(No Transcript)
28
Commutation-Effect with load RL
29
UniJunction Transistor
30
Symbol
31
(No Transcript)
32
(No Transcript)
33
(No Transcript)
34
(No Transcript)
35
Assignment 1. ??????????????????? 220 Vac
(???????????) ( ??????????????????????????????
??? ) 2. ???????????????????????????? (Motor
Drive) ????????? ???????????????????? 1 ????
???????????????????????????? 6 Vdc (
?????????????????? Robot ?????? Intru-Practice
???????? ????????????????????????
) ???????? Specification ??????????????????
data sheet ??????????????? 7
??????????????????? simulate ????? PSpice
36
Silicon-Controlled Switch (SCS)
37
Gate Turn-Off switch (GTO)
38
Triggering Devices
39
Programmable Unijunction Transistor
40
Characteristic of PUT
Forward Saturation Level
Forward Gate Current
Gate-to-anode leakage Current
41
Circuitry of PUT
42
Four-Layer Diode
43
Silicon Unilateral Switch (SUS)
44
(No Transcript)
45
Silicon Bilateral Switch (SBS)
46
DIAC
47
(No Transcript)