NPN and NPN OPEN COLLECTOR electronics！

It is composed of an only transistor of npn type and of resistor of
pull-up configuration, which fixes the output voltage to that of
power supply when the transistor is in the quiescent position. It
is circuitly similar to the logics of TTL type and for this reason is
considered to be compatible to them. When it is used correctly
it shows low levels of saturations towards the 0 Vdc and
practically null towards the positive. The manner is influenced
in proportional way by the increase of the cable lenght, by the
frequency of impulses to be transmitted and by the increase of
the load, thus the ideal application should keep these
considerations in mind. The open collector variant is different
for the lack of the pull-up resistor, freeing, in such way, the
transistor collector from the tie of the encoder power supply,
allowing to obtain output signals with different voltage.

absolute encoder, incremental encoder, hybrid encoder, non-magnetic encoder, multi-turn encoder, multi-turn combination encoder, draw wire encoder, digital readout, linear scale

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