GK-12A
Electronic Tube
Description
The high-power generator triode with magnetic focusing of the electron beam GK-12A is designed to generate and amplify oscillatory power in stationary radio engineering devices, mainly in electrothermal installations. The cathode is a tungsten thoriated carbide-bath direct heating. The design is ceramic-metal with an external copper anode. Weight no more than 15 kg.
Cooling - forced:
- anode - water;
- shells - air.
GK-12A: identification and purpose
GK-12A is classified as a Electronic Tube and provides amplification, generation, rectification, switching or indication according to the circuit of the specific equipment. Selection requires comparison of the complete designation, electrical ratings, construction, base or connector, mounting arrangement and passport data. Matching opening characters or a similar appearance do not establish identical characteristics or interchangeability.
A family name describes the general equipment class but does not replace the documentation for the exact execution. A suffix, additional digit, colour, bulb, base or housing variant can identify a material difference. GK-12A should therefore be ordered by the product marking rather than by appearance alone.
Function within the equipment
The item provides amplification, generation, rectification, switching or indication according to the circuit of the specific equipment. Its exact operating mode is defined by the circuit and associated equipment. For lighting products, verify voltage, power, luminous output, colour, optical arrangement and fixture type. For electronic tubes and display devices, verify electrode function, heater ratings, limiting voltages and currents, cooling, pin allocation and operating range.
Numerical data retained from the original catalogue record are shown in Technical Details. Those values must be compared with the passport for the actual item. Aircraft types and systems are not assigned by analogy when reliable documentation is unavailable.
Selection and compatibility checks
Before replacement, compare the primary and alternative designations, rated voltage or current, power, base, dimensions, mass, contact arrangement, cooling requirements and environmental limits where documented. Exterior lighting units may also require confirmation of filter colour, beam direction and approved installation position.
Related members of a series may use different electrical modes, optical characteristics or mechanical interfaces. They must not be treated as interchangeable without an explicit documentary reference. General background on this equipment class is available under Electronic Tube.
Incoming inspection and installation
Incoming inspection includes checking the marking and supporting records and examining the housing or envelope, base, contacts, connectors, mounting points, reflector, filter and seals as applicable. Electrical measurements, photometric checks or electronic-tube bench testing must follow an approved procedure.
Install the item only in the intended fixture or equipment while observing polarity, supply mode, cooling and electrical-safety requirements. Complete the functional checks prescribed after installation. External integrity alone does not demonstrate serviceability.
Related catalogue positions
Functionally related products include GK-9B, GM-3B, GK-5A, GM-4B. They are grouped by class and family for catalogue navigation and do not imply interchangeability. More items are listed in the Landing Lights, Lamps & Beacons category.
Enquiry information
An enquiry for GK-12A should state the exact designation, quantity, required condition, marking photograph, delivery scope and required document set. When available, include the designation of the item and equipment being replaced. Price, actual availability, lead time and condition of the offered item are confirmed separately.
Technical details
Product Type: Electronic Tube
Primary Designation: GK-12A
Alternative Designations: GK-12A; GK 12A; ГК-12А
Function: provides amplification, generation, rectification, switching or indication according to the circuit of the specific equipment
Selection Basis: Exact designation, execution, marking and documentation for the specific equipment
Application: Only as supported by the passport, illustrated parts catalogue or approved installation documentation
Interchangeability: Not established by a related designation, matching base, housing or appearance alone
Inspection: Verify electrical ratings, contacts or connector, mounting, construction and required operating mode
Enquiry Data: Designation, quantity, condition, marking photograph, delivery scope and required documents
Documentation: Product passport and approved operating or repair documentation
Category: Landing Lights, Lamps & Beacons
All specificationsCollapse specifications
Retained Technical Data:
1. Filament current 260 ± 25 A.
2. The resistance of a non-heated cathode is about 0.003 Ohm.
3. Anode current in a pulse (at Ua=Uc=1 kV), not less than 40 A.
4. The steepness of the characteristic (at Ua=1 kV, Ia=5 and 7 A), not less than 45 mA/V.
5. Gain factor (at Uа=1 and 5 kV), not less than 140.
6. The grid locking voltage is negative (at Ia=0.1 A), not more than 60 V.
7. Vibrational power (at a frequency of 1 MHz), not less than 60 kW.
8. Interelectrode capacitances:
– input, no more than 170 pF,
– output, no more than 0.8 pF,
– pass-through, no more than 90 pF.
9. Heating voltage 5.7 – 6.3 V.
10. Operating ambient temperature range from +5 to +40 C.
Payment & delivery
Orders ship from our hub in Dubai. Partner stock is first transferred to Dubai, then shipped to you.
Dubai stock: 100% before dispatch. Partner stock (Remote stock) and Pre-order: 50% advance payment to start the order and 50% before shipment from Dubai to you.
Availability, lead time, delivery cost and payment terms are confirmed for your order before payment.
Payment & delivery terms