Vacuum luminescent indicator IV-27M is a low-voltage multi-digit indicator of a triode system with a directly heated cathode, green glow color and flexible leads, designed to display digits and a decimal point simultaneously in 13 digits and sign information in the 14th digit. The IV-27m indicator is intended for operation in the dynamic indication mode.
Parameter
Digital Discharge Brightness (2-13) not less
180cd / m²
Brightness of one digit (1.14) not less 10cd /
m²
Uneven brightness of digital bits
- with a brightness level of the minimum
luminous discharge up to 250cd / m2 not more ± 40%
- with the brightness level of the minimum
luminous discharge 250-500cd / m2 not more + 60% -40%
- with the level of brightness of the minimum
luminous discharge over 500cd / m2 is not standardized
Filament current not less 160mA not more 220mA
Display segment current pulse of one digit
(total) not more 2.5mA
Single-discharge grid current pulsed not more
3-4mA
Filament voltage 3.15V (nominal)
Voltage of anodes (segments) and grids 24V
(nominal)
Operating instructions for the IV-27M
indicator:
It is not recommended to operate the indicator
when the heater is supplied with direct current. The filament should be
supplied with alternating current from the transformer winding with a midpoint.
The midpoint is connected to the common wire (minus) of the circuit.
To avoid image flickering, the switching
voltage must be at least 40Hz.
It should be borne in mind that the visible
luminescence of the segment when the voltage is applied to the grid occurs at a
positive potential of the anode-segment of about 2.5-5.0V. In order to avoid
possible illumination, the potential value at the anode segment should not
exceed 1.5-2.0V.
To completely remove the glow of the elements
of the anodes-segments when the voltage is applied to them, it is necessary to
apply a locking negative potential of 2.5 to 5.0V to the grid.
We recommend using a green filter.
Combined shipping is accepted
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Shipping
time - 10-30 days
Item will be shipped immediately after
payment
Thing will be securely packed
Delivery from Ukraine by postal service
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