Panasonic is part of a large worldwide groupselling relays and associated switching products under different brand names in different territories.The conditions of use in some territories may differ from those customary in Europe. In particular there are often major differences in regard to national and international specifications, such as UL, CSA, VDE, SEV, EVE, SEMKO, etc. Thus, when considering contact loads as stated in this catalogue (e.g. 10 A, 30 VDC for the SP relay) its hould be understood that these values are not necessarily an absolute maximum but tested ratings. Mostly the stated value has been tested for a certain life expectancy as stated by the manufacturer or the respective test house. Thus, under different conditions, the stated “maximum” may, in practice, be safely exceeded.
)
(A strong Tr1 necessary)
(G ood) itter connection
(Tr2 conducts completely.Applications Relays Electronic Circuits
compared with the resistance the
relay coil.
• hen there chattering the input
signal because waveform oscillation,
an tim constant circuit should be
inserted the stage before the
5 lin tio . using coils, there may
be reduction in; the danger of
incomplete restoration, the contact
pressure, and the vibration resistance. This does not mean that is
im ediately connected the defect, but
it linked troubles that occur after long
periods use and with many units in
operation.) is
connected the coil, residual voltage
is retained the relay coil which may
cause incomplete restoration and faulty
operation.
C tio h
c lle r
ds_x61_en_relay_technical_information_091112D 25
.)
6 lta e
In switching applications where a
sem iconductor (transistor, UJT, etc.
W hen the signal from the transistor's
collector taken and used drive
another circuit shown the figure on
the right, minute dark current flows to
the relay even the transistor off.
(High amplification)
This circuit trap into which easy
to fall when dealing with high circuit
Schm idt trigger circuit.
This because the drop-out voltage is
10% more the rated voltage, low
value compared that for coil, and
also there tendency increase the
life lowering the drop-out voltage.)
(Tri sufficient for signal use. This
may cause the problems described
above.
• Due the relay coil current, the
difference the voltage point P
when Tr2 conducting and point P
when Tri conducting creates
hysteresis the detection capability of
Schm idt circuit, and care must taken
in setting the values. (However, the
response speed drops.
(No good) arlington connection
(Due excessive consumption power, heat
is generated.)
technology
