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PDF RV4145A Data sheet ( Hoja de datos )
| Número de pieza | RV4145A | |
| Descripción | Low Power Ground Fault Interrupter | |
| Fabricantes | Fairchild Semiconductor | |
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RV4145A
Low Power Ground Fault Interrupter
www.fairchildsemi.com
Features
• No potentiomenter required
• Direct interface to SCR
• Supply voltage derived from AC line – 26V shunt
• Adjustable sensitivity
• Grounded neutral fault detection
• Meets U.L. 943 standards
• 450µA quiescent current
• Ideal for 120V or 220V systems
Description
The RV4145A is a low power controller for AC outlet
ground fault interrupters. These devices detect hazardous
grounding conditions, such as equipment (connected to
opposite phases of the AC line) in contact with a pool of
water and open circuits the line before a harmful or lethal
shock occurs.
Contained internally are a 26V zener shunt regulator, an op
amp, and an SCR driver. WIth the addition of two sense
transformers, a bridge rectifier, an SCR, a relay, and a few
additional components, the RV4145A will detect and protect
against both hot wire to ground and neutral wire to ground
faults. The simple layout and conventional design ensure
ease of application and long-term reliability.
Block Diagram
VFB
+Input
VREF
(+13V)
RV4145A
R1
10K
R2
10K
6.5V 6.5V 6.5V 6.5V
Op Amp Output
+VS
(+26V)
Ground
R3
4.7K
SCR Trigger
65-4145A-01
REV. 1.0.3 3/6/02
1 page  
RV4145A
Mov
Line
RTEST
15K
Sense Transformer
Press
To Test
1000:1
C1
10µF
Hot
Neutral
RSENSE
1M *
RV4145
VFB Op Amp Output
VREF (+13V)
+VS
GND
SCR Trigger
PRODUCT SPECIFICATION
Ground Neutral
Transformer
200:1
C3
0.01 µF
C4
0.03 µF
RLINE
24K
Latching
Contacts
K1
Load
Solenoid
DB1
1N4004 (4)
CF
2.2 µF
Q1 ON Semi
MCR100-6
C2
0.01µF
* Value depends on transformer characteristics.
Figure 1. GFI Application Circuit (Three-Wire Outlet)
65-4145A-03
REV. 1.0.3 3/6/02
5
5 Page 
PRODUCT SPECIFICATION
Ordering Information
Part Number
RV4145AN
RV4145AM
RV4145AMU
Package
8-Lead Plastic DIP
8-Lead Plastic SOIC
8-Lead Plastic MSOP
Operating Temperature Range
-35°C to +85°C
-35°C to +85°C
-35°C to +85°C
RV4145A
DISCLAIMER
FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY
PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY
LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN; NEITHER
DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS.
LIFE SUPPORT POLICY
FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES
OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR
CORPORATION. As used herein:
1. Life support devices or systems are devices or systems
which, (a) are intended for surgical implant into the body,
or (b) support or sustain life, and (c) whose failure to
perform when properly used in accordance with
instructions for use provided in the labeling, can be
reasonably expected to result in a significant injury of the
user.
2. A critical component in any component of a life support
device or system whose failure to perform can be
reasonably expected to cause the failure of the life support
device or system, or to affect its safety or effectiveness.
www.fairchildsemi.com
3/6/02 0.0m 001
Stock#DS2004145A
2002 Fairchild Semiconductor Corporation
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet RV4145A.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| RV4145 | Low Power Ground Fault Interrupter | Fairchild Semiconductor |
| RV4145A | Low Power Ground Fault Interrupter | Fairchild Semiconductor |
| RV4145AM | Low Power Ground Fault Interrupter | Fairchild Semiconductor |
| RV4145AMU | Low Power Ground Fault Interrupter | Fairchild Semiconductor |
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