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PDF M-190G Datasheet ( Hoja de datos )


Micro DOT Printer - M-190G - EPSON

Número de pieza M-190G
Descripción Micro DOT Printer
Fabricantes EPSON 
Logotipo EPSON Logotipo
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M-190G datasheet
M-190G pdf, arduino
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Explanation of Voltage Terminoloty
In previous specifications for out printers, M-180, M-190, and so on, we identified a usable voltage as
“terminal voltage”; however from this specification for the M-192G on, we will call a usable voltage
“power supply voltage” and also provide voltage ranges, including loss of power supply, voltage when
energizing, and voltage loss from driver and circuit lines.
This is because the previous term, “terminal voltage”, caused confusion between voltage at the
terminals and the power supply voltage.
If the voltage at the terminals is not within specifications, there is a risk that the drivers will not be driven
properly. That’s why we changed it to an expression that could not be misunderstood. Therefore,
this change in terminology doesn’t require a change in the power supply used for M-190 series.
Explanation of Power Supply Voltage
M-190G power supply voltage 5 ± 0.5 V
(when a stabilized power supply is used);
5 +0.8/-0.5 V (when a Ni-Cd battery is used)
The voltage loss in each terminal, even during sending of current to print solenoids, the voltage
loss in the power supply and loss from loss wiring resistance must be 0.8 V or less. Also, the
voltage loss in the driver circuitry (driver saturation voltage) must be 0.4 V or less.
Compared to this, the specification for the M-190 provides that:
M-190 terminal voltage
4.8 +0.4/-1.5 V (when a stabilized power supply is used);
4.8 +0.7/-1.5 V (when a Ni-Cd battery is used)
These values are defined as assumed the following conditions:
M-190 power supply voltage
5 ± 0.5 V
(when a stabilized power supply is used);
5 +0.8/-0.5 V (when a Ni-Cd battery is used)
The total for the power supplyDvaotlataSgheeleots4sUp.cluosmthe voltage loss from resistance in the wiring plusDataShee
the voltage loss in the driver circuit must be within 1.2 V. (0.8 V + 0.4 V = 1.2 V)
Therefore, the lowest permissible voltage from the driver circuit when energizing is 3.3 V.
([4.5 V - 0.8 V = 3.7 V] - 0.4 V = 3.3 V.)
Also, in either printer mechanism, at the typical print speed, a motor terminal voltage is assumed to be
4.8 V. However, this is obtained by estimating that the voltage loss in the motor terminal during
continuous printing is am average of 0.2 V.
Therefore, there is no substantial terminal difference in the usable ranges of power supply and terminal
voltages between M-190G and M-190.
In either mechanism, the maximum value of the voltage when a Ni-Cd battery is used is 0.3 V above
the 5.5 V maximum when a stabilized power supply is used. This maximum value allows for the
high-voltage situation that occurs temporarily when the Ni-Cd battery is fully charged. This value is not
guaranteed for continuous use.
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TITLE
M-190G
Specification
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