Electronic tube and vacuum tube catalog

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Min/Max I

96 mA / 104 mA

Philips current-regulator ballast tube designed to maintain approximately 100 mA over a 30–80 V operating range.

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Min/Max I

1.35 A / 1.5 A

Philips current-regulator ballast tube designed to maintain approximately 1.4 A over a 5–15 V operating range.

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Min/Max I

289 mA / 311 mA

Philips current-regulator ballast tube designed to maintain approximately 300 mA over an 80–200 V operating range.

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B7G

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Heater

1 V / 70 mA

Min/Max I

263 mA / 283 mA

B7G - Miniature 7-contact

Philips current-regulator ballast tube designed to maintain approximately 275 mA over an 80–120 V operating range.

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4 pins

RMA-standardized ballast tube for series-load regulation, specified for approximately 470–510 mA load current over a 1.8–2.2 V load range.

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6 pins

Ballast resistor tube specified for approximately a one-volt drop at a 420 mA current rating.

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6 pins

Ballast resistor tube specified for approximately a one-volt drop at a 660 mA current rating.

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UX4

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Heater

720 mA

UX4 - Medium-shell UX 4-contact

Current-regulating ballast device designed for two-volt battery-radio filament strings, regulating approximately 0.72 ampere.

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UX4

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Heater

420 mA

UX4 - Medium-shell UX 4-contact

Current-regulating ballast device designed for two-volt battery-radio filament strings, regulating approximately 0.42 ampere.

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4 pins

Standardized ballast tube rated for approximately a one-volt drop at 0.62 ampere, using a small four-pin base.

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4 pins

RMA ballast type rated for approximately 550 mA, using the standardized old four-pin base arrangement.

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8 pins

RMA ballast type rated for approximately 540 mA and constructed with an octal base.

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8 pins

RMA-standardized glass-envelope octal ballast tube rated for approximately one volt at 660 mA.

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8 pins

RMA ballast type rated for approximately 560 mA and constructed with an octal base.

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OCTAL6

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Heater

740 mA

6 pins - OCTAL6 - Octal 6-contact base

Ballast tube designed for approximately a one-volt drop at a 740 mA operating current.

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Heater

540 mA

Current-regulating ballast tube designed to maintain approximately 540 mA in its specified series circuit.

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Ballast tube, 1 V drop at 0.66 A.

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One-volt ballast tube rated 50 mA.

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B4

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Heater

200 mA

B4 - European 4-pin base

OSRAM barretter current regulator designed to stabilize current in series circuits through the temperature-dependent resistance of its regulating element.

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OCTAL7

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OCTAL7 - 7-contact octal-family base

Western Electric/RMA ballast lamp designed for current-regulating service, with published electrical ratings and operating conditions.

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OCTAL7

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OCTAL7 - 7-contact octal-family base

Western Electric/RMA ballast lamp designed for current-regulating service, with published electrical ratings and operating conditions.

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B4

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Heater

300 mA

B4 - European 4-pin base

OSRAM barretter current regulator designed to stabilize current in series circuits through the temperature-dependent resistance of its regulating element.

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B4

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Heater

300 mA

4 pins - B4 - European 4-pin base

OSRAM barretter current regulator designed for automatic current stabilization in series-connected electrical circuits.

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B4

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Heater

300 mA

4 pins - B4 - European 4-pin base

OSRAM barretter current regulator designed for automatic current stabilization in series-connected electrical circuits.

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B4

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Heater

300 mA

4 pins - B4 - European 4-pin base

OSRAM barretter current regulator designed for automatic current stabilization in series-connected electrical circuits.

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Min/Max I

1.08 A / 1.22 A

Philips current-regulator ballast tube designed to maintain approximately 1.15 A over a 10–30 V operating range.

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Min/Max I

850 mA / 930 mA

Philips current-regulator ballast tube designed to maintain approximately 0.9 A over a 3–10 V operating range.

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GOLIATH

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GOLIATH - Goliath industrial rectifier base

Ballast lamp designed to maintain approximately constant current through amplifying-valve filaments despite variations in battery supply voltage.

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OCTAL5

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OCTAL5 - Small-wafer octal 5-contact base

Gas-filled ballast tube designed for nearly constant-current operation, specifically used as a television horizontal-output cathode stabilizer.

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Gas-filled ballast tube designed to maintain relatively constant current throughout its specified operating-voltage range.

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4T

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IO

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4 pins - IO - International Octal

Iron-wire ballast tube designed to regulate approximately 1.62 A over an 11–15 V operating range.

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Gas-filled ballast tube designed to maintain relatively constant current as supply voltage varies across its operating range.

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UX4

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4 pins - UX4 - Medium-shell UX 4-contact

Tapped 50 V, 300 mA ballast current regulator for AC/DC receiver heater strings, including a pilot-lamp tap and surge-reducing action during warm-up.

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7 pins

Long-life seven-pin miniature ballast regulator maintaining approximately 140–160 mA over a 4.5–11.2 V operating range.

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Ballast lamp designed to maintain substantially constant filament current in telephone repeater-valve circuits despite changes in supply voltage.

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Constant-current ballast tube using nonlinear resistance to maintain nearly constant current over a specified voltage range.

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P30Y

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Hydrogen-filled 200 mA barretter for series heater strings, using an iron filament's positive temperature coefficient to stabilize current over supply-voltage variation.

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P30

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Hydrogen-filled 200 mA barretter for series heater chains, automatically increasing resistance as voltage rises to maintain substantially constant current over selectable regulating ranges.

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P30X

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Hydrogen-filled current-regulator barretter for series heater strings, using an iron filament to compensate for supply-voltage fluctuations and stabilize receiver heater current.

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UX4

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Regulator

90 V

Min/Max I

10 mA / 50 mA

4 pins - UX4 - Medium-shell UX 4-contact

Current-regulating ballast device intended to stabilize series-connected heater or filament circuits against changes in applied supply voltage.

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UX4

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Regulator

90 V

Min/Max I

10 mA / 50 mA

4 pins - UX4 - Medium-shell UX 4-contact

Current-regulating ballast device for receiver heater or filament circuits, using temperature-dependent resistance to hold operating current substantially constant.

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IO

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8 pins - IO - International Octal

Ballast current regulator intended for series heater or filament circuits, providing automatic resistance variation to reduce the effect of changing supply voltage.

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Battery-equipment ballast regulator designed to stabilize filament current in low-voltage receiver circuits and protect series-connected valve filaments from supply variation.

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Raytheon NB-series resistance/ballast tube for 2-volt battery receivers, selected for a specific nominal filament-current drain and usable with storage-battery, air-cell, or dry-cell supplies.

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Raytheon NB-series ballast regulator for 2-volt battery receivers, providing a defined filament-current load for storage-battery, air-cell, and dry-cell operation.

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Raytheon NB-series resistance tube for battery receivers, designed to regulate a specific filament-current drain across common low-voltage battery supply arrangements.

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Raytheon NB-series ballast regulator for 2-volt battery receiving equipment, maintaining the intended filament current when used with specified battery taps.

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Raytheon NB-series resistance/ballast tube for battery receivers, providing controlled filament-current drain for 2-volt storage-battery, air-cell, or dry-cell supplies.

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Raytheon NB-series ballast regulator for 2-volt battery receivers, designed for filament strings drawing approximately 600 mA.

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Raytheon NB-series ballast regulator for 2-volt battery receivers, designed for filament strings drawing approximately 660 mA.