TUBEHOBBY Nixie Clock NCV2.1 User Manual

NCV2.1 Nixie Clock

User's guide

Firmware version: v1.3

1 Safety instructions

Nixie clock is an electr ical device and cautious handling must be assured. In spite of the relatively low voltage board power supply, a high voltage is present onboard. It can generate voltages exceeding 200V and can cause electrical shock if handled inappr opriately. Keep in mind that nixie tubes may be disa bled during night time but the clock can wake up at any time. Therefore do not touch any component or soldering point when power is on. Safe assembling, connecting and operation of this clock are the users’ responsibility. Keep the clock away from children.

The NCV2.1 nixie clock's circuits and software (firmware) may not be reverse engineered, copied or used commercially without written permission.

2 Assembling

2.1 Logic board assembling

Start by fitting 0,25W resistors since they're the lowest. Then fit the diodes. Double check the polarity of any polarity sensitive device before soldering. Then assembly all other components height wise. If you want to experiment with your board or upgrade PICmicro with a newer firmware in the future, you may consider to use the sockets for the ICs (sockets are optional and are not provided along with kit. You may obtain them in your local store). Do not use solder with acid, instead use colophony or any other not electrical conductive solder resin. Set the soldering iron at a ppropriate temperature to avoid “cold soldering”. Do not heat any point for more than 3 seconds, otherwise you risk to da mage the electronic components and printed circuit board. After successful assembly set high voltage using R26 trimmer, measure the voltage across C6 capacitor. Set the voltage to 160V for IN-14 nixie tubes and 170V for IN-18 nixie tubes. Check power supply temperature after 10 minutes of operate, if switching transistor (M1 – IRF640) and/or inductor are very hot set lower voltage.

For IN-18 tube's board, 2.2K anode resistors (R15, R17, R18, R19, R20, R21) should be used.

Fig. 1. The logic board's silk screen layer

Fig. 2. Logic board

Table 1. Logic board's part's list.

Item Quantity Reference Part

Capacitors 1 1 C1 10U 2 1 C2 470U 3 2 C3, C5 22P 4 3 C4, C8, C9 10N 5 1 C6 1U 250V 6 1 C7 330N

Diodes 7 1 D1 1N4007 8 1 D2 UF4007 9 2 D3, D4 1N4148

Transistors 10 1 M1 IRF640 11 5 Q1, Q2, Q3, Q7, Q9 MPSA42 12 1 Q4 2SA1266 13 3 Q5, Q6, Q8 MPSA92

Resistors

14* 6

R15, R17, R18, R19, R20,

R21

2.2K

14* 18

R1, R3, R4, R5, R13, R15,

R17, R18, R19, R20, R21, R24, R25, R28, R31, R32,

R33, R34

10K

15 7

R2, R8, R9, R12, R16,

R22, R27

100K

16 1 R6 910K 17 1 R7 220 18 3 R10, R11, R23 470K 19 1 R14 1K 20 1 R26 22K Trimmer 21 1 R29 5.6K 22 1 R30 15K

Integrated circuits 23 1 U1 L7805CV 24 2 U2, U3 K155ID1 25 1 U4 PIC16F876A 26 1 U5 TL494 27 1 U6 DS1307

Other components

28 1 V1

CR2032

3V Lithium

Battery

29 1 Y1 Crystal 20MHZ 30 1 Y2

Crystal

32.768KHz

31 2 SW1, SW2

SW

PUSHBUTTON

32 1 L1 270UH 33 1 F1 FUSE 0.8A 34 1 J1 PS/2 Connector 35 1 J2 PWR Connector 36 1 V1 Battery holder 37 1 J4 30Pin Connector 38 2 F1 Fuse holder 39 2 - M3 Nut 40 10 - M3 Screw 41 4 - 20mm spacer

*2.2K resistors are provided along with the kit for IN-18 tubes instead of appropriate amount of 10K resistors.

2.2 Tube's board assembling

2.2.1 IN-14 board

Move the plastic holder of the tube leaving approx 1-2mm of wire below the holder (see fig. 3) Be careful not to move it away.

Fig. 3. Plastic holder

Find #1 pin of the tube. It is covered by the white substance inside the tube.

Fig. 4. Pin #1

Pin #1 on the PCB is the most upper pin.

Fig. 5. Pin #1 on PCB

Insert the wires into the holes. Start from Pin #1. Be sure that the tubes are stacked on the right side of the PCB.

Fig. 6. Tube assembling

Stack and solder all the tubes in the same way. Then fit the female 30-pin connector on the opposite side of the PCB. Fit the column separator bulbs if you prefer to have them.

Fig. 7. IN-3 type column separator bulb

If IN-3 type column separator bulbs are used, be sure that they are stacked in the right polarity.

2.2.2 IN-18 board

Put all 72 receptacles into the tube's board holes.

Fig. 8. Fitting receptacles

Note: pin #1 and pin #8 of each tube do not require receptacles since these pins ar e not connected. Make sure that receptacles are fitted on the right side of the PCB.

After all receptacles are placed correctly, cover the board with a piece of hard paper and turn everything upside-down.

Fig. 9. Turning over

While soldering keep the PCB slightly pressed to ensure firm sitting of the rece ptacles. Do not use too much solder.

Fig. 10. Soldering

Fit the female 30 pin socket on the bottom side. Fit the column separator bulbs if you prefer to have them.

3 Software

The clock's firmware is driven by operating system and is able to work in multitasking mode. Several industrial protocols are involved and dozens of tasks and algorithms are coded. It is quite complex and contains many thousands of code lines. It is programmed so that all settings and tube's lifetime counter values are stor ed in the battery back upped memory and are kept safely during the power outage. Moreover, time and date are still counted when the clock has no power.

3.1 Firmware updates

Current version of firmware: v1.3 Added selection of new DST rules for USA and Canada.

Obsolete version v1.2. Description of fixed bug: While DST months a re set (state 14 and 18) the month values are written to incorrect places in memory. Therefore both customized vernal and autumnal month values stay actual while clock has power s upply but can not be read properly after power outage. Both of them will be set to default values (vernal = march; autumnal = october) after power outage.

Obsolete version v1.1. Description of fixed bug: When power supply is connected DST offset is not calculated immediately but is calculated on the first change of minute.

Obsolete version v1.0 First version of firmware.

NOTE: In order to update the firmware of your clock please send the PICmicro chip or whole logic board back to us for re-flashing, or order preprogrammed chip. Please contact us by email:

[email protected]

3.2 Clock’s menu

NCV2.1 nixie clock has 2 pushbuttons. There are 4 different behaviors pushing them: short and long push for each button. Long push event will be performed when the button is pressed for 3 or more seconds.

Fig. 11. Menu transitions

SW1 short push

SW2 long push

SW2 short push

SW1 long push

When the clock is powered it automatically enters the time state. A short pus h of SW1 pushbutton will change the time state into the date state. Next short push of any button will return to the time state again. A short push of SW2 pushbutton will change the time state to the tube's lifetime counter state. Next short push of any button will retur n to the time state again. If the clock is left in the date state or tube's lifetime counter state and none of the buttons is pressed within 30 seconds, timeout occurs and the clock automatically returns to the time state.

Toggle: DD/MM/YY MM/DD/YY

DateTime

Set day

Set month

Set week

Set seconds

Set minutes

Set hours

+

-

+

-

+

-

+

-

+

-

0

Auto return

To 2 branch

Tube’s Lifetime

Counter State

Fig. 12. Menu diagram. 1 branch

3.3 Setting time

When present time is shown, push and hold the SW1 pushbutton. After 3 seconds, the seconds will start blinking. A short push to SW2 will reset seconds to 00. A short push to SW1 will enter the minutes setting and minutes display will start blinking. A short push to SW2 will increase the minutes value by 1, a long push to SW2 will decrease the minutes by 1. Again, a short push to SW1 will enter the hour setting mode and hour display will start blinking. A short push to SW2 will increase the hour value by 1, a long push to SW2 will decrease the hour by 1. A short push to SW1 will lead to escape the time setting mode and the clock will return to the actual time display. During the settings, time is not rounded (e.g. when the seconds are reset, the minutes value will remain the same). If 12-hour mode is selected, the clock will automaticall y convert time to the 24hour format during settings and convert back on exit. If a GPS receiver is connected time synchronization will be performed automatically and entering to the time setting menu will not be allowed. If a GPS receiver is connected and time does not represent your local time, check the time-zone and DST settings.

3.4 Setting date

Short push to SW1 to enter the date state. There are two date display modes: DD/MM/YY and MM/DD/YY. A long push to SW2 will toggle between these modes. To set date, push and hold SW1 while date is displayed. After 3 seconds day will start blinking. A short pus h to SW2 will increase the day by 1, a long push to SW2 will decrease by 1. Next pushes to the SW1 will enter month and year settings appropriately. Month and year settings should be performed in the same way as day setting. Next push to SW1 will exit date setting mode. If a GPS receiver is connected date synchronization will be performed automatically and entering to the date setting menu will not be allowed. If a GPS receiver is connected and the date does not represent your local time, check the time-zone and DST settings.

Fig. 13. Menu diagram. 2 branch

Tube’s Lifetime

Counter

Hour Format

12/24

Leading Zero

Column Separator

Mode

+

-

T

To 1 branch

Time State

Autorotate Date

Reset Tube’s

Lifetime Counter

Night Shut-Down

Minutes

+

-

T

Night Shut-Down

Hour

Morning Wake

Minutes

Morning Wake

Hour

+

-

+

-

DST Vernal

Hour

DST Vernal

Weekday

DST Vernal

Week

+

-

+

-

DST Vernal

Month

DST Autumnal

Hour

DST Autumnal

Weekday

+

-

+

-

DST Autumnal

Week

DST Autumnal

Month

Crossfading

Deep

+

-

+

-

Tube’s Refresh

Rate

+

-

Time Zo n e

+

-

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

T

0

+

-

+

-

+

-

+

-

To 1 branch

Time State

3.5 Tube's lifetime counter

The tube's lifetime counter counts hours when the tubes are lit. During the night shut-down (if enabled) hours are not taken into account. Counter counts until 65535 hours, then overflow occurs and counter will start again from zero. To enter the tube's lifetime counter press SW2 when time is shown. The tube's lifetime counter can be reset via the settings menu. The data is stored in the battery back upped memory, so it will not be lost during power off.

3.6 Settings menu

To enter the settings menu push and hold SW1 for 3 or more seconds when the tube's lifetime counter state is present. When the settings mode is entered, on the most left tubes settings number is shown, which corresponds with the actual parameter (later this number will be enclosed in parenthesis). To set the next parameter push SW1 shortly. To return to the previous parameter push SW1 for 3 or more seconds. When the last parameter (20) is entered next short push to the SW1 will return the clock into the time state. See fig.3.

3.6.1 Hour format (1)

There are t wo modes availabl e 12- hour and 24-hour. Thes e modes can be toggled pushing SW2. The actual mode is shown on the most right tubes. For AM/PM mode see chapter 3.4.3 Default mode: 24-hour.

3.6.2 Leading zero (2)

The clock can display time with leading zero or it can be blanked (e.g. 01:23:45 or 1:23:45). These modes can be toggled pushing SW2. The actual mode is shown on the most right tubes. Default mode: leading zero is shown.

3.6.3 Column separator mode (3)

Column separator bulbs can be set in one of the four modes. Select desired mode using SW2.

● Mode 0. Column separator bulbs are disabled

● Mode 1. Column separator bulbs are lit all the time

● Mode 2. Column separator bulbs blink by 1Hz

● Mode 3. Column separator bulbs shows AM/PM mode (lit when PM)

The actual mode is shown on the most right tubes. Default mode: 2.

3.6.4 Auto rotate date (4)

The clock can automatically show date between 50 and 55 seconds every minute. Automatic change occurs in time state only. It is recommended to enable this option, since visual effects performed during display change prevents the unused cathodes of the nixie tubes from poisoning. Select desired the mode using SW2. The actual mode is shown on the most right tubes.

● Mode 00. Auto rotate is diabled

● Mode 01. Auto rotate is enabled

Default mode: enabled (in firmware v1.0 and v1.1 default mode - disabled).

3.6.5 Reset tube's lifetime counter (5)

To reset the tube's lifetime counter press SW2. When the counter is reset, 00 will appear on the most right tubes.

3.6.6 Night shut-down minute (6)

The clock can automatically disable the tubes during preset time (e.g. night time). This function involves 4 settings (night shut-down minute, night shut-down hour, morning wake-up minute, morning wake-up hour). During the time between shut-down and wake up the tubes will be disabled. If any button is pressed while the tubes are disabled, the clock will wake up for 10 seconds and then will shut down again. After 3 wake-ups tubes will remain enabled until the next shut down time. This functi on may be disabled by setting the same time (minutes and hours) for shut-down and wake-up. In this case the tubes will be lit all the time.

Set the night shut-down minutes using SW2. Default minute: 00.

3.6.7 Night shut-down hour (7)

Set the night shut-down hour using SW2. Default hour: 00. (12-AM)

Note: regardless of the setting of the clock hour mode (12 or 24 hour), hours during settings always will be displayed in 24-hour format.

3.6.8 Morning wake-up minute (8)

Set the morning wake-up minutes using SW2. Default minute: 00.

3.6.9 Morning wake-up hour (9)

Set the morning wake-up hour using SW2. Default hour: 06. (06-AM)

3.6.10 Time zone (10)

If a GPS receiver is connected, the clock must know your time zone to synchronize the time properly (in fact GPS service is a global service and provided time is GMT regardless of position). Select you time zone using SW2. The two middle tubes show offset hour, the two right ones show offset minutes. Blinking tubes means negative offset according to GMT, constantly lit tubes means positive offset. Default time zone: 00:00.

3.6.11 DST vernal hour (11)

The clock ca n aut omatically adjust time according to your local daylight saving time (DST). Since the beginning of DST and reverting to the standard time varies across the world, you shoul d set it accordingly to your local country rules. On the vernal change the clock is turned forward an hour and on the autumnal change reverted back. Each autumnal and vernal setting involves 4 settings (total 8). These settings are: hour, weekday, week of the month and month. Actual weekday is calculated automatically according to the actual date. If a GPS receiver is connected, DST correction applies as well. If you don not need DST correction, set the sa me values to all vernal and autumnal settings.

Set DST vernal hour using SW2. Hour is shown on the most right tubes. Default hour: 01. (01-AM)

Note: regardless of the setting of clock the hour mode (12 or 24 hour), hours during settings always will be displayed in 24-hour format.

3.6.12 DST vernal weekday (12)

Set the DST vernal weekday using SW2. The weekday is shown on the most right tube. 1 means monday; 7- sunday. Default weekday – 7 (sunday).

3.6.13 DST vernal week (13)

Set the DST ver nal week of the month using SW2. The week is shown on the most right tube. 1 means first week of month; 5- last week of month (regardless how many weeks this month have). Default week of month – 5 (last week).

3.6.14 DST vernal month (14)

Set the DST vernal month using SW2. The month is shown on the most right tubes. Default month – 3 (march).

3.6.15 DST autumnal hour (15)

Set the DST autumnal hour using SW2. The hour is shown on the most right tubes. Default hour: 01. (01-AM)

3.6.16 DST autumnal weekday (16)

Set the DST autumnal weekday using SW2. The weekday is shown on the most right tube. 1 means monday; 7- sunday. Default weekday – 7 (sunday).

3.6.17 DST autumnal week (17)

Set the DST autumnal week of the month using SW2. The week is shown on the most right tube. 1 means first week of month; 5- last week of month (regardless how many weeks this month have). Default week of month – 5 (last week).

3.6.18 DST autumnal month (18)

Set the DST autumnal month using SW2. The month is shown on the most right tubes. Default month – 10 (october).

3.6.19 Crossfading deep (19)

The clock can fade one digit while simultaneously fading into a second digit creating smooth appearance of digit change. During crossfading di gits are blinked up to several hundre ds times with variable duration. Smoothness of crossfading may be set using SW2. Available range is 1-25. Default value: 20.

3.6.20 Tube's refresh rate (20)

The clock uses multiplex mode of tubes driving, so the tubes flickers in pairs all the time. The flicking rate is very high and eyes can't distinguish it, therefore it creates an illusion of being constantly lit. Although in some cases flicking rate may correspond the tube's internal construc tions resonance frequency and may lead to hearable buzzing. One of the three refresh rates can be chosen using SW2. 1 corresponds with the highest refresh rate, 3 – with the lowest one. If the lowest one (3) is chosen, deep cr osfading (more than 15) may not look good because the tubes do not flick fast enough to show enough number of shapes with variable duration. Default value: 2.

Note: refresh rate selection does not influent brightness much. To select brightness, use R26 potentiometer onboard. Do not exceed voltage limit (170V).

3.7 Reset settings values to default

First time when the clock is connected to the power supply, all settings are set to default automatically. If you want to reset all values to default manually, do the following sequence: disconnect the power supply, hold both pushbuttons (SW1 and SW2) pres sed and connect the power supply, release the pushbuttons.

4 GPS synchronization

To keep time and date accurate all the time a GPS receiver can be connected. It is optional since clock has internal RTC (Real Time Clock) as a time base and is fully functional without a GPS receiver. If a GPS receiver is connected, the clock's firmware automatically detects it and periodically updates internal RTC time and date according to the time provided by the GPS satellite.

Fig. 14. GPS receiver

A GPS receiver should be NMEA-0183 standard compatible and should be able to provide GPRMC sentences via RS232 interface at 4800 baud. A required PS/2 type connector usually is used with the receivers for PDAs. Compatible receiver s are: “NAVILOCK NL-208P”, “HAICOM HI-204III” and many others.

GPS female connector pinout:

1. Not connected

2. Not Connected

3. +5V Power supply

4. Ground

5. Not connected

6. RS232 TX

4.1.1 Technical data

4.2 Software

● Time display

■ 12-hour mode

■ 24-hour mode

■ AM/PM indication

■ Programmable leading zero suppression

■ Programmable DST correction

● Date display

■ DD/MM/YY mode

■ MM/DD/YY mode

■ Leap year correction

● Programmable column separators

● Programmable tubes shut-down during night time

● Crossfading with selectable deep

● Three visual effects

● Selectable refresh rate of tubes

● Tube's lifetime counter (16-bit, up to 65535 hours)

● GPS time and date synchronization (GPS receiver is optional)

● Selectable time-zone

● Cathode poisoning prevention

● Tube testing routine

4.3 Hardware

● Microchip PIC16F876A main controller

● Real Time Clock with battery back-up (CR2032 Lithium battery)

● Tube's drive mode: 3x2 multiplex

● High voltage power supply with PWM control and software shut-down

● RS232 levels serial input

● 2 pushbuttons

● Power supply: 9-12V @ 500-1000mA DC; 5.5/2.5mm jack with positive inner

(recommended 12V 1A DC PSU. It does not matter stabilized or not)

● Incorrect polarity protection

● High precision (10ppm) timebase XTAL

5

4

3

2

1

D D

C C

B B

A A

A3_T2

A3_T1

A2_T2

A2_T1

A1_T2

A1_T1

VCC_HI_T2

VCC_HI_T1

COLON_T

A3_T1

COLON_T

VCC_HI_T1

A2_T1 A1_T1 A3_T2

COLON_T

A2_T2

VCC_HI_T2

A1_T2

VCC5

0 0

000

LO_A1

LO_A0

LO_A3

HI_A3

LO_A2

HI_A2

Vcc_HI

HI_A1

HI_A0

A3

A2

A1

COLON

Vcc_HI

Title

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High Voltage Drivers

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14Saturday, April 22, 2006

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High Voltage Drivers

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High Voltage Drivers

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R19

10K

R19

10K

R16

100K

R16

100K

R31

10K

R31

10K

R18

10K

R18

10K

R10

470K

R10

470K

Q6

MPSA92

Q6

MPSA92

R8

100KR8100K

Q2 MPSA42Q2MPSA42

R15

10K

R15

10K

Y0

16

Y1

15

Y2

8

Y3

9

Y4

13

Y5

14

Y6

11

Y7

10

Y8

1

Y9

2

A0

3

A1

6

A2

7

A3

4

Vdd

5

Gnd

12

U2

K155ID1U2K155ID1

Y0

16

Y1

15

Y2

8

Y3

9

Y4

13

Y5

14

Y6

11

Y7

10

Y8

1

Y9

2

A0

3

A1

6

A2

7

A3

4

Vdd

5

Gnd

12

U3

K155ID1U3K155ID1

R24

10K

R24

10K

Q9 MPSA42Q9MPSA42

R11

470K

R11

470K

R22

100K

R22

100K

C4

10NC410N

R20

10K

R20

10K

R12

100K

R12

100K

R32

10K

R32

10K

Q8

MPSA92

Q8

MPSA92

Q5

MPSA92

Q5

MPSA92

R21

10K

R21

10K

R23

470K

R23

470K

C8

10NC810N

Q3 MPSA42Q3MPSA42

R17

10K

R17

10K

R9

100KR9100K

1 2 3 4 5 6 7 8

9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

J4

CON30J4CON30

5

4

3

2

1

D D

C C

B B

A A

RC3 RC4

RB7

RB6

RB5

RB4

RB3

RB2

RB1

RB0

RC0 RC1 RC2

RC5

RB7 RB6 RB5 RB4 RB3 RB2 RB1 RB0

RA2 RA1

RA2

RA1

RA0 RC2 RC1

RA0

RC0

RC5

RC3

RC4

RC7

0

0 0

VCC5

HI_A3 HI_A2 HI_A1

HI_A0 LO_A3 LO_A2 LO_A1

A3 A2

LO_A0

PS_DOWN

SDA

SW1

A1

SCL

SW2

DCF77

RX

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Microcontroller Unit

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Microcontroller Unit

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Microcontroller Unit

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24Saturday, April 22, 2006

Y1

20MHZY120MHZ

C3

22PC322P

RA0/AN0

2

RA1/AN1

3

RA2/AN2/Vref-

4

RA3/AN3/Vref+

5

RA4/T0CKI

6

RA5/AN4/_SS

7

RC0/T1OSO/T1CKI

11

RC1/T1OSI/CCP2

12

RC2/CCP1

13

RC3/SCK/SCL

14

RC4/SDI/SDA

15

RC5/SDO

16

RC6/TX/CK

17

RC7/RX/DT

18

RB0/INT

21

RB1

22

RB2

23

RB3/PGM

24

RB4

25

RB5

26

RB6/PGC

27

RB7/PGD

28

Vss1

8

Vss2

19

Vdd

20

OSC1/CLKIN

9

OSC2/CKOUT

10

_MCLR/Vpp/THV

1

U4

PIC16F876

U4

PIC16F876

C5

22PC522P

5

4

3

2

1

D D

C C

B B

A A

000 0 0 0 0 0

00

0

VCC5

0

Vcc_HI

PS_DOWN

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Power supply

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Voltage

R27 100K

C6

1U 250VC61U 250V

C1

10UC110U

R29

5.6K

R29

5.6K

L1

270UHL1270UH

D3 1N4148D31N4148

R28

10K

R28

10K

Vin

1

Gnd

2

Vout

3

U1

LM7805U1LM7805

R30

15K

R30

15K

F1

FUSE 0.8A

F1

FUSE 0.8A

M1

IRF640M1IRF640

C9 10NC910N

D1 1N4007D11N4007

C7

330NC7330N

3

2

1

J2

CONN JACK PWR

J2

CONN JACK PWR

R141KR14

1K

D2

UF4007D2UF4007

R6

910KR6910K

1+

1

1-

2

COMP

3

DTC

4

Ct

5

Rt

6

Gnd

7

C1

8

E1

9

E2

10

C2

11

Vcc

12

OC

13

Vref

14

2-

15

2+

16

TL494U5TL494

U5

C2 470UC2470U

R26 22K

Q4

2SA1266Q42SA1266

R7

220R7220

5

4

3

2

1

D D

C C

B B

A A

VCC5

0

VCC5

0

VCC5

0

VCC5

0

VCC5

0

SW2

SW1

SDA

DCF77

SCL

COLON

RX

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Peripheral

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Date: Sheet

of

Peripheral

A4

44Sunday, July 30, 2006

Title

Size Document Number Rev

Date: Sheet

of

Peripheral

A4

44Sunday, July 30, 2006

1

2

3

J3

DCF77J3DCF77

R33

10k

R33

10k

R25 10K

6 4 2

5 3 1

J1

GPSJ1GPS

Q7 MPSA42Q7MPSA42

SW1SW1

R13

10k

R13

10k

Q1 MPSA42Q1MPSA42

R2

100kR2100k

R3 10kR310k

Y2

32.768KHz

Y2

32.768KHz

D4

1N4148D41N4148

SW2SW2

+

V1

3V Lithium Battery

+

V1

3V Lithium Battery

R5

10kR510k

R4 10kR410k

R34

10k

R34

10k

R1

10kR110k

X1

1

X2

2

Vbat

3

Gnd

4

Vdd

8

SQW/OUT

7

SCL

6

SDA

5

U6

DS1307U6DS1307

5

4

3

2

1

D D

C C

B B

A A

H1 H2 H3 H4 H5 H6 H7 H8 H9 H0

H8

H2

H0

H6

H4

H3

H9

H7

H5

H1

H8

H2

H0

H6

H4

H3

H9

H7

H5

H1

H8

H2

H0

H6

H4

H3

H9

H7

H5

H1

L8

L2

L0

L6

L4

L3

L9

L7

L5

L1

L6

L2

L5

L4

L0

L8

L7 L9

L3

L1

L6

L2

L5

L4

L0

L8

L7 L9

L3

L1

L6

L2

L5

L4

L0

L8

L7 L9

L3

L1

A2_T2

A1_T2

VCC_HI_T1

A2_T1 A1_T1

COLON_T

A3_T1

A3_T2

VCC_HI_T2

A1_T1

A1_T2

A2_T1

A2_T2

A3_T1

A3_T2

VCC_HI_T1 VCC_HI_T2COLON_T COLON_T

Title

Size Document Number Rev

Date: Sheet

of

IN-14 Tube's Board

A

11Monday, December 13, 2010

Title

Size Document Number Rev

Date: Sheet of

IN-14 Tube's Board

A

11Monday, December 13, 2010

Title

Size Document Number Rev

Date: Sheet of

IN-14 Tube's Board

A

11Monday, December 13, 2010

T1 T2 TS1 T3 T4 TS2 T5 T6

Hours

Minutes

Seconds

1

3

2

4

3

5

4

6

5

7

6

8

7

9

8

10

9

11

0

12

D1

2

D2

13

A

1

T3

IN-14T3IN-14

1

3

2

4

3

5

4

6

5

7

6

8

7

9

8

10

9

11

0

12

D1

2

D2

13

A

1

T2

IN-14T2IN-14

A1C

2

TS2 IN-3

1

3

2

4

3

5

4

6

5

7

6

8

7

9

8

10

9

11

0

12

D1

2

D2

13

A

1

T1

IN-14T1IN-14

1

3

2

4

3

5

4

6

5

7

6

8

7

9

8

10

9

11

0

12

D1

2

D2

13

A

1

T6

IN-14T6IN-14

1

3

2

4

3

5

4

6

5

7

6

8

7

9

8

10

9

11

0

12

D1

2

D2

13

A

1

T5

IN-14T5IN-14

A1C

2

TS1 IN-3

1

3

2

4

3

5

4

6

5

7

6

8

7

9

8

10

9

11

0

12

D1

2

D2

13

A

1

T4

IN-14T4IN-14

1 2 3 4 5 6 7 8

9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

J3J1J3

J1

Gas discharge indicator type IN-14 (ИН-14)

Datasheet translated by TubeHobby

www.tubehobby.com

Description

Gas discharge indicator is intended for visual indication of electrical signals in digital form in broad kind of equipment.

Connection diagram

Pins are counted clockwise from pin #1 which is shown by arrow on glass body underneath the plastic spacer. Pins are counted looking to the tube from the pin’s side (bottom).

Arrow on glass

Pin number

1 Anode 2 Cathode comma 3 Cathode “1” 4 Cathode “2” 5 Cathode “3” 6 Cathode “4” 7 Cathode “5” 8 Cathode “6”

9 Cathode “7” 10 Cathode “8” 11 Cathode “9” 12 Cathode “0” 13 Cathode comma

Description

Basic electrical and lighting parameters

Firing voltage (no more than) 170V Current for digits (no more than) 2.5mA Current for commas (no more than) 0.3mA Brightness (no less than) 100 cd/m² Viewing angle (no less than) +/- 30º

Allowable limits

Power supply voltage 200V Current for digits 2.0 - 3.5mA Current for commas 0.3 – 0.7mA

Average current (supplying from mains 50Hz via single-period rectifier) Current for digits (no more than) 2.0mA Current for commas (no more than) 0.2mA

Multiplex mode Power supply voltage 190V Average current for digits 0.7 - 1.5mA Average current for commas 0.15 – 0.6mA Pulse current for digits 7 – 13mA Pulse current for commas 1.5 – 5mA Pulse width (no less than) 70µS Period 1 – 1.8 kHz

Tube does not contain precious metals.

Notes

Pin soldering and bending should be performed at least 5mm away from the glass body. Avoid multiple soldering – desoldering.

After long period of non-use it is recommended to train cathodes applying working current for 1 minute for each cathode.