• Antique Radio Forums • View topic Replacing Germanium

    Additionally, Germanium transistors usually didn't have as much gain as was needed/wanted, leading to circuit design decisions that would be considered really bad today. Germanium circuits are often overly sensitive to Hfe/beta by modern standards. If you are going to mess around with Germanium, build a test fixture like this one. It's easy

  • Germanium Parts AMERICAN ELEMENTS

    Product Name: Germanium Parts. Product Number: All applicable American Elements product codes, e.g. GE-E-02-PTS,GE-E-03-PTS,GE-E-04-PTS,GE-E-05-PTS. CAS #: 7440-56-4. Relevant identified uses of the substance: Scientific research and development. Supplier details: American Elements 10884 Weyburn Ave. Los Angeles, CA 90024 +1 310-208-0551 +1 310-208-0351. Emergency

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  • Germanium For Sale Tractor Parts And Replacement

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  • Redesign Germanium Transistor Circuits, Part 7

    Universal Replacement Parts. Fortunately, replacing germanium devs with silicon ones isn't entirely guess. When the industry switched over in the 1960s and 1970s, it provided excellent replacement parts. At the time, these parts had average performance characteristics that would suff in many circuits. Over time, designers have immensely improved these characteristics. Today, with

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  • Choosing Transistor Replacements » Electronics Notes

    Looking at The Basic Transistor ParametersWhat If I Can't Find The Original Transistor detailsSummaryWhen looking for a suitable transistor replacement some of the basic transistor parameters that need to be considered include the following: 1. Semiconductor material used: Most transistors will either be germanium or silicon. Other types are normally only used in very specialist applications. It is important to know what type the transistor is because there is a difference in the base emitter forward bias voltage drop. For germani在electronics-notes上查看更多信息
  • Old germanium replacements Electronics Forums

    04/10/2003· The NTE160 is listed as a replacement. A couple bucks each. It's got pretty impressive specs (ft = 700 MHz) for a Germanium. Lots of these old radios used the self-biasing properties of the original germaniums, sometimes you have to add some biasing parts when you put in

  • BIG MUFF TRANSISTORS AND OTHER COMPONENTS

    Most of the diodes used in the V2 were unmarked (black cathode band only). A few were marked 125 (1N125 is a germanium diode, but these were Silicon), and some from the 1975-76 period had 1N925 or 1N802 (gray/black/red bands) diodes. Diodes used in the V3 and V6 were 1N4148 or 1N914, and other were unmarked. Diodes used in the Russian made Sovtek Big Muffs were very different from the USA

  • Germanium — Wikipédia

    PropriétésDécouverteÉtymologieÉconomieFabricationProductionUsageUtilisationsToxicitéAlimentationCe métalloïde est semi-conducteur et cristallise avec la même structure que le diamant, tout comme le silicium. Il possède cinq isotopes naturels, dont le 76Ge, qui est faiblement radioactif. Au moins 27 radioisotopes ont été synthétisés.在fr.wikipedia上查看更多信息
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  • PSU Germanium transistor replacement Page 1

    19/01/2014· Date codes on various parts inside seem to indicate around 1964-1965 build. Anyways, I got it broken, and it turned out just to be a shorted output transistor. Unfortunately they're very old germanium transistors, but I was able to find a replacement on e-bay. Well fast-forward a few months later, and another transistor kills itself. I'm

  • Old germanium replacements Electronics Forums

    04/10/2003· The NTE160 is listed as a replacement. A couple bucks each. It's got pretty impressive specs (ft = 700 MHz) for a Germanium. Lots of these old radios used the self-biasing properties of the original germaniums, sometimes you have to add some biasing parts when you put in

  • Transistors for sale eBay

    GS109C RFT Germany Germanium Ge Transistors PNP GS109 ~GS112 AC122 AC125, 20pcs. $9.99. Trending at $15.65. 100Pcs New BC547 TO-92 NPN 45V 0.1A Transistor BC547. $1.16. Trending at $1.91. 12 BRAND NEW T0 TO-220 CASE TRANSISTOR MICA INSULATOR KEYSTONE #4672 SHIP FR/USA. $2.67. Trending at $4.09. Best Selling. See All Best Selling. Showing slide

  • Amazon: germanium

    BOJACK 1N34A Germanium Diode 50 mA 65V Axial 1N34A 50 millimap 65 Volt Electronic Silicon Diodes(Pack of 25 Pieces) 4.6 out of 5 stars 17. $5.99 $ 5. 99. Get it as soon as Wed, Aug 26. FREE Shipping on your first order shipped by Amazon . Only 18 left in stock order soon. Vital Salveo- Circulation Germanium Waist Lumbar/back Sleeve, One Size. 3.6 out of 5 stars 60. $23.95 $ 23. 95

  • 1N34A Germanium Diode Mike's Electronic Parts

    The 1N34A Germanium Diode, a ceramic earphone and a tuning coil are all that is needed to make a simple crystal radio set. Because Crystal Radio Sets use only the power coming from the antenna, a good antenna is required to drive the earphone of a Crystal Radio Set. If you live in the city close to a transmitter antenna then you should be able to pick up that station on your Crystal Radio Set

  • All Transistors. Datasheet. Cross Reference Search

    How to choose a replacement for a bipolar transistor TOTAL: 124234 transistors. LIST Last Update. BJT: YZ21 WT062 TL142 TIP3055T TIP2955T MN638S MJE340T