7029

microamperes per For Altitudes wp to

60000 A

microamperes per For Altitudes wp to 60,000 Feet

lumen and its stabi- ANODE-SUPPLY VOLTAGE (DC or Peak AC) 1250 max. volts

1250 V

lumen and its stabi- ANODE-SUPPLY VOLTAGE (DC or Peak AC) 1250 max. volts

SUPPLY VOLTAGE BETWEEN DYNODE No

10 V

SUPPLY VOLTAGE BETWEEN DYNODE No. 10

l'ized sensitivity. AND ANODE (DC or Peak AC). « v « « v « . . 250 max. volts

250 V

l'ized sensitivity. AND ANODE (DC or Peak AC). « v « « v « . . 250 max. volts

Other distinguishing DYNODE-No. 1 SUPPLY VOLTAGE

1 V

Other distinguishing DYNODE-No. 1 SUPPLY VOLTAGE

DC or Peak AC)e v v v v v v v v v . 300 max. volts

300 V

DC or Peak AC)e v v v v v v v v v . 300 max. volts

photocathode located With E = 1000 volts (except as noted)

1000 V

photocathode located With E = 1000 volts (except as noted)

Radiant, at 2900 angstroms - 27200 - a/

27200

Radiant, at 2900 angstroms - 27200 - a/

staticalty focused Luminous! 10 40

300 A

staticalty focused Luminous! 10 40 300 amp/lumen

range from about 2900 to 6200 angstroms as shown current Amp]nf|catnon PR

320000 A

range from about 2900 to 6200 angstroms as shown current Amp]nf|catnon PR - 320000 -

mately

4900

mately 4900 angstroms.

¢ Averaged over any interval of 30 seconds maximum

30 s

¢ Averaged over any interval of 30 seconds maximum.

of | millimicrosecond or iess, the time spread filament Yamp operated at acolor temperatureof

28700 s

of | millimicrosecond or iess, the time spread filament Yamp operated at acolor temperatureof 28700 k.

of the pulse at the anode is less than 5 milli- sistor has a value of

0.01 ohm

of the pulse at the anode is less than 5 milli- sistor has a value of 0.01 megohm.

microseconds measured at 50 per cent of the maxi- the value of light flux is 0.001 tumen and 100 vol

100 V

microseconds measured at 50 per cent of the maxi- the value of light flux is 0.001 tumen and 100 volts are

wavelength of Maximum Response . u900 t 500 angstroms filter is0.001 Yumen. The load resistor has a

1

wavelength of Maximum Response . u900 t 500 angstroms filter is0.001 Yumen. The load resistor has a value of

0.01 megohm, and 100 volts are applied between cathode the anode and constitute the current utilized

100 V

0.01 megohm, and 100 volts are applied between cathode the anode and constitute the current utilized in

supply voltage (E) adjusted to give a luminous sensi- Dynode No. 10 is so shaped as to enclose

10 V

supply voltage (E) adjusted to give a luminous sensi- Dynode No. 10 is so shaped as to enclose

tivity of 20 amperes per lumen. Dark current caused by

20 A

tivity of 20 amperes per lumen. Dark current caused by

supply voltage [E) below 1000 volts is recommended

1000 V

supply voltage [E) below 1000 volts is recommended.

1000 volts, 25° ¢ tube temperature, ac-amplifier band— anode consists of a grating which allows the

25 V

1000 volts, 25° ¢ tube temperature, ac-amplifier band— anode consists of a grating which allows the

width of 1 cycle per second, tungsten 1ight source at electrons from dynode No.9 to pass through it

9 s

width of 1 cycle per second, tungsten 1ight source at electrons from dynode No.9 to pass through it to

Under conditions with supply voltage E of 1000 volts, tube

1000 V

Under conditions with supply voltage E of 1000 volts, tube

anode current of 10 microamperes within 1 minute after >

1 A

anode current of 10 microamperes within 1 minute after >

creaseby more than 1microampere nor decrease by more than z

1 A

creaseby more than 1microampere nor decrease by more than z

1.5 microcamperes

0 mA

1.5 microcamperes. 0

Current Amplification. Ratio of the output current to the 3000 5000 7000

11000

Current Amplification. Ratio of the output current to the 3000 5000 7000 9000 11000

amplify signals composed of electron streams. In the electrons emitted by dynode No. |0 are col

0

amplify signals composed of electron streams. In the electrons emitted by dynode No. |0 are col-

in order not to exceed these absolute ratings, 126 volts. The voltage between dynode No. |

0 V

in order not to exceed these absolute ratings, 126 volts. The voltage between dynode No. |0 and

the approximate range of 50 to 100 volts. Low

100 V

the approximate range of 50 to 100 volts. Low

[T CURVE A: SPECTRAL CHARACTERISTIC OF LIGHT SOURCE ha operating voltage between dynode No. 10 and a

10 V

[T CURVE A: SPECTRAL CHARACTERISTIC OF LIGHT SOURCE ha operating voltage between dynode No. 10 and anode

H 2870°K SOURCE AFTER PASSING THROUGH BLUE 1] cated operating voltage between dynode No. |

0 V

H 2870°K SOURCE AFTER PASSING THROUGH BLUE 1] cated operating voltage between dynode No. |0 and

1 ply voltage between these electrodes above the

1 V

1 ply voltage between these electrodes above the

92CM-78l1I increased to the rated maximum valueof

300 V

92CM-78l1I increased to the rated maximum valueof 300 volts.

voltage is applied to the electrodes of the

7029 V

voltage is applied to the electrodes of the 7029

that the basing arrangement is such that the voltage reference to the curve in Fig.5 which shows the

5 V

that the basing arrangement is such that the voltage reference to the curve in Fig.5 which shows the

than twice the voltage per stage. As a result, of fuminous sensitivity for the 7029, and the

7029 V

than twice the voltage per stage. As a result, of fuminous sensitivity for the 7029, and the

(E) in the range from 750 to 1000 volts. Within thereby lowers the detection threshold to give

1000 V

(E) in the range from 750 to 1000 volts. Within thereby lowers the detection threshold to give

second. At voltages above 1000 volts, regener—

1000 V

second. At voltages above 1000 volts, regener—

[ VOLTS/STAGE = 9l and its duration. When the 7029 is operated at

7029 V

[ VOLTS/STAGE = 9l and its duration. When the 7029 is operated at

| w3 low the maximum rated value of

20 A

| w3 low the maximum rated value of 20 microamperes

i T { anode current should not exceed

10 A

i T { anode current should not exceed 10 microamperes.

determined from Fig.6. For example, if a sensi- prevent this possibility, it is suggested that a

6

determined from Fig.6. For example, if a sensi- prevent this possibility, it is suggested that a

tivity of 10 amperes per lumen is desired, it shield be closely fitted over the uncoated area

10 A

tivity of 10 amperes per lumen is desired, it shield be closely fitted over the uncoated area

age of 1000 volts, and on the "maximum” sensitivity I0 megohms to a potential near that of the cath

1000 V

age of 1000 volts, and on the "maximum” sensitivity I0 megohms to a potential near that of the cath-

curve to a supply voltage of about700 volits. ode. The shield may consist of a conductive

0 V

curve to a supply voltage of about700 volits. ode. The shield may consist of a conductive

supply voltage over the range from 700 to

1000 V

supply voltage over the range from 700 to 1000 volts.

2 £ 43 EXTERNAL SHIELD VOLTS RELATIVE TO ANODE VOLTS

43 V

2 £ 43 EXTERNAL SHIELD VOLTS RELATIVE TO ANODE VOLTS

VOLTS/STAGE =

9 V

VOLTS/STAGE = 9l

the effect on anode current of variation inmagnetic pedance in the order of 10 megohms to the po

10 ohm

the effect on anode current of variation inmagnetic pedance in the order of 10 megohms to the po-

With increase in voltage above 100 volts between extreme care should be observed in providing

100 V

With increase in voltage above 100 volts between extreme care should be observed in providing

[ * TOTAL VOLTAGE-DIVIDER CURRENT 4 part of the 7029. Although the metallic coating

7029 V

[ * TOTAL VOLTAGE-DIVIDER CURRENT 4 part of the 7029. Although the metallic coating

N leads from the 7029 to the amplifier should be

7029

N leads from the 7029 to the amplifier should be

W 7 vacuum-tube rectifier. The voltage for each

7 V

W 7 vacuum-tube rectifier. The voltage for each

41 7 spaced taps on a voltage divider across the

7 V

41 7 spaced taps on a voltage divider across the

o 4 voltage divider will depend on the voltage regu

4 V

o 4 voltage divider will depend on the voltage regu-

€1 €2: 2 pf, 1000 volts (dc working)

1000 V

€1 €2: 2 pf, 1000 volts (dc working)

€3 C¥: 0.1 pf, 150 volts (dc working)

150 V

€3 C¥: 0.1 pf, 150 volts (dc working).

o 0.5 1.0 1.5 2.0 R1 R2 R3 R4 R5 R6 R7 R8 R9 R10: 18000 ohms,

1 W

o 0.5 1.0 1.5 2.0 R1 R2 R3 R4 R5 R6 R7 R8 R9 R10: 18000 ohms, 1 watt

INCIDENT LIGHT FLUX-ARBITRARY UNITS R11: 12000 ohms,

1 W

INCIDENT LIGHT FLUX-ARBITRARY UNITS R11: 12000 ohms, 1 watt

92CM -8673RI R12: 200000 ohms, 12 watts, adjustable, General Radio

12 W

92CM -8673RI R12: 200000 ohms, 12 watts, adjustable, General Radio

to critical dependence of the gain of the 7029 high-voltage power supply when access to the

7029 V

to critical dependence of the gain of the 7029 high-voltage power supply when access to the

the positive high-voltage terminal be grounded society of America, vol.37, pp. uzo 431, June,

1947 V

the positive high-voltage terminal be grounded society of America, vol.37, pp. uzo 431, June, 1947.

The high voltages at which the 7029 is oper

7029 V

The high voltages at which the 7029 is oper-

fields to the first dynode (secondary emitter). a result of this characteristic, the 7029 can be

7029 s

fields to the first dynode (secondary emitter). a result of this characteristic, the 7029 can be