The transistors make much less difference than in a Fuzz Face. But they are noticeable. The normal transistors we use (USA 2N, Japanese 2SB, Russians, etc) are clearer sounding, the British OC7X etc have a more snarly, cocked-wah sound.
Germanium is mainly a byproduct of zinc ore processing. It is a hard, grayish-white element; it has a metallic luster and the same crystal structure as diamond; and it is brittle, like glass.In addition, it is important to note that germanium is a semiconductor, with electrical properties between those of a metal and an insulator. The development of the germanium transistor opened the door to ...
In a very close future, all stocks, including mine, of original germanium AC128 or any usable germanium transistor will dry. Forever. After this extinction, that only a few aficionados will notice, there will be no other possiblities to obtain THE original fuzz tone than a used Germanium fuzz box or a digital model.
TRANSISTOR 2SA970 PNP -120V -0.10A. Price CA$2.00 EACH. Out of Stock. GERMANIUM TRANSISTORS, NOS, 2SA269. Price CA$4.50. TRANSISTOR 2SA841BL PNP -60V 0.05A. Price CA$1.00 EACH. IC 2SA1015 TRANSISTOR PNP -50V -150mA. Price CA$0.95 EACH.
Germanium Transistor Selection Guide The development of the germanium transistor in 1948 opened the door to countless applications of solid state electronics. From 1950 through the early 1970s, this area provided an increasing market for germanium, but then high-purity silicon began replacing germanium in transistors, diodes, and rectifiers.
2x GT1323 Electrically Matched Pair Germanium PNP Transistor Fuzz Face Pedal Effect Metal Case Military Art Project ГТ1323 ~ SFT323 AC128. LCIelectronics. 5 out of 5 stars. (100) $5.55. Add to Favorites. NOS Motorola Germanium PNP Transistor 2N627 10A 30V TO-3 ~ Lot of 2 pc. New In Package. RetroVinti.
The transistor base is made from doped mono-crystalline germanium typically of 2-5 ohm-cm and of N-Type for PNP transistors. The crystal is diced into wafers and then acid etched to remove surface defects caused by dicing. The etched wafer are 3-6 mils in thickness.
But the germanium alloy-junction transistors were completely different from modern silicon planar transistors. The photo below shows the construction of an NPN alloy transistor, It consists of a P-type germanium crystal base with tin/antimony beads fused on either side to form the emitter and collector.
NPN silicon germanium microwave transistor for high speed, low noise applications in a plastic, 4-pin dual-emitter SOT343F package. 1.2 Features and benefits Low noise high linearity RF transistor High maximum output third-order intercept point 32 dBm at 1.8 GHz 110 GHz fT silicon germanium technology 1.3 Applications Ka band oscillators DRO's
With the diode test feature of a DMM, you would expect to get a reading of around 0.2 when the test probes forward bias each junction of a germanium transistor, and a reading of OL, infinite, or the whatever the meter does to indicate an open circuit when the junction is reverse biased.
Multiple transistors were made on a single wafer. 2 Polish one side of the Germanium wafer. 3 Diffuse an N type layer and lap the unpolished back of the wafer. 4 Metal coat the back of the wafer. 5 Evaporate the P type aluminum emitter which produced a P type germanium re-growth after micro alloying to wafer.
First post. I am learning Tina-Ti. I need to add a few Germanium transistors to the library. After searching, I found a .LIB file for LTSpice, Here is the contents of that file (Germanium.LIB) Thanks in advance for any help you can muster. *Germanium.lib .MODEL 1N60 …
The tested specifications of germanium transistors are the most important things that determines how a fuzz will sound. This is MUCH more important than what type of transistor it is. This is because specs can vary wildly even when comparing 2 identical transistors (one reason they aren't made anymore), so to compare 2 transistors of different ...
The Germanium Fuzz is a fuzz pedal. The knobs change the sounds. IMPORTANT: after plugging it into power (9vdc only), it will take 2-3 minutes on average to sound correct. Good time to tune your guitar and grab a beverage. The color of the LED indicator light might change. Don't turn the internal trimmer.
Germanium Transistors. Home. Forums. Hardware Design. General Electronics Chat. Germanium Transistors. Thread starter zophas; Start date Aug 25, 2021; Search Forums; New Posts; Prev. 1; 2; First Prev 2 of 2 Go to page. Go. I. Ian0. Joined Aug 7, 2020 3,405. Aug 26, 2021 #21 zophas said: Well, I just built a multivibrator with two 70 year old OC ...
Redesign Germanium Transistor Circuits, Part 2; Conversion Examples. Bias Network, Etc. Below are several examples of the conversion process. I've analyzed a famous germanium project book and come up with substitutions for base bias resistors and other parts. The silicon replacements require twice the base bias voltage of germanium parts.
This is the fee to have germanium transistors tested for gain and leakage. 1 Original Russian made MP20A PNP Germanium transistor. Similar to AC121 or AC128. These are known to have VERY low leakage and were made for the Russian military. Gains on what I've checked so far are between 50-150. 1 Original Russian made P29 PNP Germanium transistor.
hysteresis in MoS 2 field effect transistors 2D Mater. 6 045049 [8] Ornelas C D, Bowman A, Walmsley T S, Wang T, Andrews K, Zhou Z and Xu Y-Q 2020 Ultrafast
Usually, the smaller the difference, the higher the gain of the transistor). Haven't had a chance to try a germanium transistor, but I suspect it would be the same. And you already got the answer for this transistor: the emitter side is marked with …
Now that I have become Transistor Boy, I am learning all about them. Well, let me restate that. I am learning some basics about them, and what I am learning is pretty much 30-40 year old technology. Anyway, what I do know is that germanium transistors have a reputation for good tone in fuzz/distortion devices.
Bipolar Transistor Basics In the . Diode. tutorials we saw that simple diodes are made up from two pieces of semiconductor material, either silicon or germanium to form a simple PN-junction and we also learnt about their properties and characteristics.
A site for the novice or established collector/restorer of Vintage Radio sets and Electronics.Valve (tube) and Transistor with information/projects and technical help . For the Radio Constructor we have an archive of Vintage Circuits (schematics) to build
Because you never get the gain range you want. If the spec on the original component is 30 - 120 HFE the part you buy from them may be anywhere in that range and, more than likely, is near the bottom of that range. I paid $8 for a NTE transistor when I was first starting out. When I …
2.2 Meg. I measured a handful of my 2.2 M resistors and found one at 2.001 M. So far so good. The other resistor needs to be 2.472 k. I thought I might find a close one out of my stash of 2.4 k 10% resistors. I was wrong. All of mine measured a bit less than 2.4 k; the closest was 2.397.
2x GT1323 Electrically Matched Pair Germanium PNP Transistor Fuzz Face Pedal Effect Metal Case Military Art Project ГТ1323 ~ SFT323 AC128. LCIelectronics. 5 out of 5 stars. (100) $5.55. Add to Favorites. NOS Motorola Germanium PNP Transistor 2N627 10A 30V TO-3 ~ Lot of 2 pc. New In Package. RetroVinti.
SYLVANIA 2N307 PNP GERMANIUM AF POWER OUTPUT TRANSISTOR - NTE 104 EQUIVALENT. NIB Sylvania was an early manufacturer of germanium power transistors, including the 2N307 transistor – other companies also involved in early power transistors include RCA, Motorola, Bendix and Honeywell.
The corresponding sinusoidal voltage signal is applied to the bipolar transistor in the amplification region, which is made of impurity germanium(Ge-2) with doping concentration of 4.8 × 10 13 cm − 3 and carrier lifetime of 5 × 10 − 5 s. (a) The potential distribution of the intrinsic semiconductor under sinusoidal small voltage signal.
The problem is that germanium dioxide (GeO 2) ... a transistor with a germanium channel could require as little as a quarter of the energy that a silicon-channeled transistor …
GERMANIUM TRANSISTORS, 2SB176, MATSUSHITA. Price CA$4.50 Frequently bought together. LED 5MM DIFFUSED RED 5PCS/PKG. Price CA$1.00 /PKG . DIODE 1N5243B ZENER 13V 1/2W DO-35. Price CA$0.80 EACH . PROTOBOARD-1590B, 1 SIDED, 2 …
