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  2. List of Mullard–Philips vacuum tubes - Wikipedia

    en.wikipedia.org/wiki/List_of_Mullard–Philips...

    Most post-war European thermionic valve (vacuum tube) manufacturers have used the Mullard–Philips tube designation naming scheme. Special quality variants may have the letter "S" appended, or the device description letters may be swapped with the numerals (e.g. an E82CC is a special quality version of an ECC82)

  3. Mullard–Philips tube designation - Wikipedia

    en.wikipedia.org/wiki/Mullard–Philips_tube...

    Mullard initially handled semiconductor naming by using the "O" heater code (shifting "Cold Cathode" to a code of "Z"). The second letter broadly indicated the type of device, roughly following the tube designation, without indicating the semiconductor material: A low-power semiconductor diode, e.g. OA7

  4. RC-5 - Wikipedia

    en.wikipedia.org/wiki/RC-5

    Each bit of the RC-5 code word contains 32 carrier pulses, and an equal duration of silence, so the bit time is 64×27.778 μs = 1.778 ms, and the 14 symbols (bits) of a complete RC-5 code word take 24.889 ms to transmit. The code word is repeated every 113.778 ms (4096 ÷ 36 kHz) as long as a key remains pressed.

  5. Fluorescent-lamp formats - Wikipedia

    en.wikipedia.org/wiki/Fluorescent-lamp_formats

    GE Chroma 50/Philips Colortone 50/Sylvania Design 50 ≈90-99 5000 D-SDL, D-EDL 55 DX Deluxe Daylight/Northlight/Colour Matching ≈88-98 6500 N/A N/A C75 GE Chroma 75/Philips Colortone 75 ≈92 7500 700-series tubes (Calcium halophosphate and rare-earths tri-phosphor blend) Numeric color code Alphanumeric color code Color Approximate CRI

  6. Universal remote - Wikipedia

    en.wikipedia.org/wiki/Universal_remote

    Harmony 670, a universal remote. A universal remote is a remote control that can be programmed to operate various brands of one or more types of consumer electronics devices. . Low-end universal remotes can only control a set number of devices determined by their manufacturer, while mid- and high-end universal remotes allow the user to program in new control codes to the re

  7. List of sound chips - Wikipedia

    en.wikipedia.org/wiki/List_of_sound_chips

    Philips: Philips SAA1099: 1984 6 SAM Coupé, Creative Music System (also known as Game Blaster) [22] Ricoh: Ricoh 2A03 / 2A07 1983 5 Nintendo Entertainment System (Famicom) home console (hardware expandable), arcade game Punch-Out!! NMOS chip, delta modulation channel (DMC) is for pulse-code modulation (PCM) sampling, 7-bit DAC. [23] Sega: Sega ...

  8. S/PDIF - Wikipedia

    en.wikipedia.org/wiki/S/PDIF

    S/PDIF (Sony/Philips Digital Interface) [1] [2] is a type of digital audio interface used in consumer audio equipment to output audio over relatively short distances. The signal is transmitted over either a coaxial cable using RCA or BNC connectors, or a fibre-optic cable using TOSLINK connectors.

  9. Philips circle pattern - Wikipedia

    en.wikipedia.org/wiki/Philips_circle_pattern

    Use of the Philips circle pattern was in its test card broadcasts until 17 February 2001 between 12:00 AM and 06:00 AM (the next day, bTV started 24-hour transmissions), and 2 times a year during transmitter maintenance until 2013. The Philips circle pattern was also used in Hungary, [161] Belgium, [162] [163] Norway, [164] [165] and Sweden. [166]