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Two vacuum electron tubes on dark blue background
lot of vanilla
ECC83 (12AX7) Vacuum tube, isolated on white background.
Close-up of vintage electronic components, including vacuum tubes, in an old radio or amplifier.
Vintage Electrical Vacuum Tube on Wooden Surface
Close-up Copper wire in electric vehicle car engine
vacuum tube amplifier with 300B triodes
Ground or earth bar.
Old cathode ray tube on white background.
Fasteners and mechanical parts
Valves of old radio in still life
Close-up view of the internal components of a vintage radio receiver, showcasing vacuum tubes, capacitors, light bulbs, dial drive and wiring.
Row  of old glass vacuum radio tubes on white background.
Lisbon, Portugal: boxed aircraft auxiliary power unit (APU) - the APU is a small turbine engine that provides air and electricity, no hydraulics, but electricity and air can run hydraulic pumps. APUs are typically located in the tail cone of the aircraft, but they can also be located in the engine nacelles or in the wheel wells. APUs can be started using either the aircraft's batteries or a ground power unit (GPU). Once the APU is running, it generates electrical power through a generator. APUs are also used by some airlines to reduce fuel consumption. For example, some airlines use the APU to power the aircraft's air conditioning system on the ground, instead of using the main engines. This can save fuel, as the main engines are more fuel-efficient when they are running at higher speeds - Lisbon Airport, aka Humberto Delgado airport.
old radio lamps on a light background. Cover. For design.
Water pipe valve of supply watering system in hydroponic farm plant nursery greenhouse.
vacuum tube, radio, antique, electrical component
An electric heater in farm
Detail of old broken glass bulb thrown into the trash
A large, used screw on a grey fine leather.
vacuum tube amplifier with 300B triodes
Sleeping on the bed
paper clip sticking out of a magnetic jar
Tower of disposable cups in the cafeteria
A submersible pump for the supplying water from a well
fluorescent lamps
Radio lamp amplifier. Electronic vacuum tube. Old-fashionedelectronic amplifier bulb diode lamp  close-up,  vintage background.
black shock absorber
Radio tubes inside the old amplifier. Selective focus
spotlight. Equipment for indoor shooting.
Free Images: "bestof:Valvo ECC83.JPG en Valvo ECC83 vacuum tube 2012-11-14 23 51 57 own Olli Niemitalo cc-zero Uploaded with UploadWizard Vacuum tubes"
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