M54123L Unisonic Technologies, M54123L Datasheet - Page 9

• Manufacturer Part Number: M54123L
• Description: Earth Leakage Current Detector
• Manufacturer: Unisonic Technologies

UTC M54123L LINEAR INTEGRATED CIRCUIT
in order to keep at least 12V in Vs, when normal, supply current flows.
connected between input pin 1 and 2. In this case protective resistance （Rp=100Ω）must be insurted. Sensitivity
current is regulated by R
used for noise removal.
is distorted and some signals does not appear in the output of amplifier. So please connect a varistor or a diode （2
pcs）to ZCT in parallel.
input pin becomes more than 1.1V（Typ.），latch circuit operate and supply gate current in the gate of SCR
connected to the output pin 7. Pin 6 can be used in the open state，but please connect capacitor（about 0.047μF）
between pin 6 and pin 7.
UTC
UTC assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or
other parameters) listed in products specifications of any and all UTC products described or contained
herein. UTC products are not designed for use in life support appliances, devices or systems where
malfunction of these products can be reasonably expected to result in personal injury. Reproduction in
whole or in part is prohibited without the prior written consent of the copyright owner. The information
presented in this document does not form part of any quotation or contract, is believed to be accurate
and reliable and may be changed without notice.
Supply voltage circuit is connected as a previous diagram. Please decide constants R1, R2, C4, and C5 of a filter
In this case, please connect C4 (more than 1μF) and C2 （ less than 1μF） . ZCT and load resistance R
When large current is grounded in the primary side （AC line） of ZCT, the wave form in the secondary side of ZCT
Latch circuit is used to inspect the output level of amplifier and to supply gate current on the external SCR. When
Capacitor C6 between pin 1 and GND is used to remove noise and is about 0.047μF.
UNISONIC TECHNOLOGIES CO., LTD.
L
, and output of amplifier shows in pin 4. External capacitor C1 between pin 4 and GND is
QW-R122-001,B
L
of ZCT are
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