Jun 08, 2012· The germanium diode has an interesting and important role in the history of radio transmission. In the early years of radio, information was transmitted by telegraphy, by turning the transmitter on and off with a switch called a telegraph key. This would spell out messages in Morse code, which consist of dots and dashes.
Aug 01, 2010· I've started work on a Big Muff today. It's based on the Violet Rams Head schematic from GGG, but I'm using Germanium Transistors (GT404B) and Diodes (D18). So far, i'm getting rather unexpected results, but i'll explain where i am so far in anycase, so it .
Jul 27, 2018· The Germanium Transistor. The germanium transistor was the first to be mass produced and made commercially available to the public. This transistor was used extensively in radio technology, helping to create the first portable AM radios as well as the first car radios.
Dec 10, 2017· ChampReverb Silver Supporting Member. You might consider a small germanium fuzz / overdrive along with a separate blend pedal so you can mix in clean tones. I have a Menatone Simplexity which is a germanium preamp which is very nice for adding a bit of germanium grit while keeping the EQ fairly true (unlike a Treble Boost circuit).
While germanium was the goto material for the time in creating transistors, it had both its ups and downs. When compared with the quality of silicon, it was much less reactive and had a lower melting temperature. This allowed electrons to flow through the germanium way quicker than silicon and provided a higher frequency response.
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Most silicon diodes have forward voltage drops in the order of and volts. Germanium diodes have forward voltage drops between and volts. The 2N3904 transistor is a silicon transistor, so you can expect a forward voltage drop in the range of to volts.
germanium goldbonded diode is mechanically and electrically stable. 2 Figure 1 is a crosssectional view of such a diode. Second breakdown in transistors was discovered by Thornton and Simmons 3 in 1958 and was observed as a sudden decrease in the
Jun 20, 2008· there germanium diodes out there in the 1020 amp range? Alternator is rated 6V 50W at 5k rpm.
As with the germanium diode, the reverse readings for germanium transistors will not be as good as for silicon transistors. A small level of current is allowable as this results from the presence of minority carriers in the germanium.
2) These devices were primarily transistors and diodes. However, germanium diodes have the advantage of an intrinsically low forward voltage drop, typically volts; this low forward voltage drop results in a low power loss and more efficient diode, making it superior in many ways to the silicon diode.
...germanium (Ge), has been replaced by silicon (Si) as it exhibits a higher voltage drop and is less efficient in most diode applications. Doping. Doping. Semiconductor doping, the addition of a very small amount of a foreign substance to a pure semiconductor...
The Tunneling Transistor. The fact that both electrons and holes are so mobile in germanium makes the material a convenient candidate for constructing CMOS circuits. CMOS employs two different kinds of transistors: the pchannel FET (pFET), whose channel contains an excess of freemoving holes, and the nchannel FET (nFET),...
Germanium was first discovered and used for diodes and transistors, and were commercially abundant. Silicon transistors started replacing germanium but I guess not quick enough for that article. As mentioned, you want to use the PNP version like a 2n3907.
Find great deals on eBay for germanium transistors. Shop with confidence. Skip to main content. eBay Logo: ... Motorola HEP 135 Germanium Diode NOS See more like this. RCA 2N404 USA F 3Lead Transistor 24v 100mA Germanium Guitar Fuzz Pedal. New – Open box. Buy It Now. Free Shipping.
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