About Us

MINEVIK Machinery is a leading and pioneering enterprise with the most advanced international level in R&D, manufacturing and selling of large-scale crushing & screening plants and beneficiation plants.

large-scale crushing & screening plants and beneficiation plants.

All of our equipment have got ISO international quality system certification, European Union CE certification and Russian GOST certification.

  • In central China-Zhengzhou, covering 140 thousand square meters
  • Win-win cooperation and create more value to customers
  • Exported large quantities and high-end mobile crushing plant and milling equipments to Russia, Kazakhstan, Indonesia, Ecuador, South Africa, Nigeria, Turkey more than 100 countries .

Ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum

Our Products

AS a leading global manufacturer of crushing and milling equipment, we offer including quarry, aggregate, grinding production and complete stone crushing plant. We also supply individual crushers and mills as well as spare parts of them.


Our goal is to guarantee the excellent operation equipment with high safety for our customers and minimize the downtime of the machine by predictive maintenance. Kefid service and original accessories can be 100% trusted at the time of maintenance.


Minevik service and original accessories can be 100% trusted at the time of maintenance.


striving to enable customers to get the parts in the nearest place.


Our sales market is spread all over more than 100 countries and regions

Pnp Germanium

PNP Germanium Transistor Buffer Muzique

Q1 PNP germanium transistor (AC128 or similar) All resistors are 1/4w and capacitors are in uF. Here is the blank buffer pc board with the parts layout superimposed over it. You can follow the signal path through the pcb by following the traces that can be seen through the translucent board. A complete description of each part's function:

Germanium Transistors

1 AC125 PNP Germanium transistor, new old stock, made by Tungsram. They are a direct substitute for OC81d and work great in fuzz pedals. Gain range is 60-130, so they are right in the fuzz face range.

Bipolar junction transistor Wikipedia

A bipolar junction transistor (bipolar transistor or BJT) is a type of transistor that uses both electrons and holes as charge carriers.. Unipolar transistors, such as field-effect transistors, only use one kind of charge carrier.BJTs use two junctions between two semiconductor types, n-type and p-type.. BJTs are manufactured in two types: NPN and PNP, and are available as

Vintage Radio and Electronics. Germanium Transistors

GERMANIUM TRANSISTORS The following table lists the parameters for Germanium transistors. The column marked Case is the outline of the transistor case. Note: Not all headings are the same parameter.

Germanium Transistors markhindes.easywebstore.co.uk

New old stock AF131 PNP Germanium Transistor £1.75 Add to cart(19 In stock) NKT773: New old stock NKT773 from Newmarket Transistors Ltd. This is a NPN A.F germanium transistor £4.95 Add to cart(433 In stock) AF150: New old stock AF150 Germanium PNP I.F Transistor £3.95 Add to cart(8 In stock) ACY11: SIEMENS new old stock ACY11. This is a germanium PNP

pnp germanium transistor datasheet & applicatoin notes

Abstract: pnp germanium transistor MIL-S-19500 Germanium Transistor FY 3011 Text: SPECIFICATION SEMICONDUCTOR DEVICE, TRANSISTOR , PNP , GERMANIUM , HIGH-POWER TYPE 2N1358 This specification is , specification covers the detail requirements for a high-power, PNP , germanium transistor . 1.2 Physical , Design, construction, and physical

NPN vs PNP Germanium

13/01/2004· A lot of boutique RangeMaster clone builders will have you believe that the only way to get them to sound right is to use one of those "super rare" transistors that have been sprinkled with magic dust by the transistor fairy With all the testing and tuning I've done with the RangeMaster, that just hasn't proven to be true. I've used gain and leakage checked AC128 (PNP), AC188 (PNP

Germanium Transistor for sale in UK | View 37 bargains

AC128 Mullard PNP Germanium Transistors x 10 Fuzz . Ac128 mullard pnp germanium transistors x 10 fuzz. Germanium transistor set gain matched for tone bender. a very rare germanium transistor. "I have other patterns which you can see in the photos, if you want one of those then just have a look at my other items"

Amazon: germanium transistor

NTE Electronics NTE105 NTE Electronics NTE105 PNP Germanium Transistor for Audio Power Amplifier, TO-36 Case, 15A Continuous Emitter Current, 40V Collector-Base Voltage

Germanium QRPparts

New Old Stock Germanium Transistors. QRPparts uses cookies. For more detailed information about these cookies please see our privacy policy.Please accept to continue or block all non-essential cookies.

Alloy-junction transistor Wikipedia

The germanium alloy-junction transistor, or alloy transistor, was an early type of bipolar junction transistor, developed at General Electric and RCA in 1951 as an improvement over the earlier grown-junction transistor.. The usual construction of an alloy-junction transistor is a germanium crystal forming the base, with emitter and collector alloy beads fused on opposite sides.

AC128 Germanium Transistors Fuzz Dog's Pedal Parts

AC128 Germanium Transistors Transistors Low-leakage PNP germaniums perfect for all your fuzzy desires. Liven up your Fuzz Face, pimp your Fuzz Factory, wrangle your RangeMaster. Fully tested with a Peak Atlas DC55 and sorted for gain, compensating for leakage. Very limited numbers get them while you can. It seems stock of these is rapidly dwindling worldwide.

NKT304 PNP x2 Germanium Transistor Newmarket Power

Find many great new & used options and get the best deals for NKT304 PNP x2 Germanium Transistor Newmarket Power NKT351 unused tested at the best online prices at

Mister Transistor's Historic Semiconductors

Radiomuseum states that these are PNP germanium alloy transistors intended as an AF amplifier and gives a reference of the Steidle book "Transistoren Taschen Tabelle" from 1981. If you can provide information about Chinese germanium transistors or diodes, or know where I can obtain more, please

Germanium Transistors :: Transistors :: Semiconductors

(*) Applies to shipments to Germany with our Standard courier service DHL when paid via PayPal, credit card or Lastschrift. Delivery times for other countries and shipping methods can be found on our shipping information page.Offers are valid as long as stocks last.

NPN vs PNP Germanium Transistors for a Fuzz Face

13/10/2018· IIRR, I have read somewhere on this very site that the [early?] processes that produced the PNP germanium transistors produced a lower noise part than the processes involved in the NPN production. so they made more PNP's.


a npn germanium transistor oc140 by mullard. few available.

What makes germanium pnp transistors ideal for fuzz

r/diypedals: reddit's community for DIY Pedal Builders! My experience has been that pnp germanium sounds better in a fuzz. Can't explain why, but I've got plenty of both and I have built plenty of fuzzes.

Bones Hi Fi: Germanium Transistor Based Audio Power

10/05/2013· And during much of the 1960s, even then commonly available germanium output power transistors – like the now extremely rare AD 149 PNP germanium output transistor which can produced 10 watts in a single-ended configuration if properly heat sinked – remains under utilized by electronic enthusiasts of the day because back then heat sinking

It's Raining Germanium! tonefiend

13/08/2013· PNP are easier to find in the correct hfe and leakage as NPN seem to be hfe high= leakage high. My local electronics place had some great high gain ge pnp philcos, and I bought them all before you all got them. Germanium does sound better in a fuzz face in my opinion, though it depends on your playing style and technique. I have found that NOS

2N241A MST Germanium Ge PNP Transistor NOS Qty 1 |

Qty 1 2N241A MST Germanium Ge PNP Transistor NOS. New old stock (NOS) item. Some shelf wear from storage and handling. Leads may be slightly bent. WE WILL COMBINE SHIPPING ON MULTIPLE ITEM ORDERS. When purchasing multiple items, please let us know before making payment so that we can adjust the shipping amount on the invoice.

E.S.V. Fuzz Germanium Version – Build Your Own Clone

The original germanium Fuzz Face used PNP transistors and had a positive ground. The silicon version used NPN transistors and had a negative ground. Positive ground means that the sleeves of the jacks, the chassis/enclosure, and ground of the circuit are all connected to the positive terminal of your power supply. Negative ground is the same thing, only everything is connected to the negative

All About Germanium Transistors GuitarPlayer

15/11/2017· Germanium is a semi-metallic element that was used to make transistors, diodes, and other components that were widely used in consumer electronics until more consistent and more reliable silicon components became available in the late 1960s.

Germanium Transistors Page 1 Small Bear Electronics

PNP Hot Germanium For The Big Muff. $2.75. Add To Cart


* The delivery date is not guaranteed until you have checked out using an instant payment method. If your Guaranteed Delivery item isn’t on time, you can (1) return the item, for a refund of the full price and return shipping costs; or (2) keep the item and get a refund of your shipping costs (if shipping was free, get a $5 eBay voucher).

What Germanium PNP transistor do I use? | Electronics

17/03/2007· Germanium transistors were pretty much obsoleted forty years ago, by silicon transistors. There is a far better range of silicon transistors, and generally they have far better specs than germanium transistors. The only reason you'd use a germanium transistor at this time is if there was a specific reason for using germanium. There are still some

Germanium vs. Silicon Transistors Robert Keeley

11/09/2013· Germanium vs. Silicon Transistors. September 11, 2013; Overdrive/Distortion, Technical; One facet of the design process here at Keeley Electronics comes down to selecting not just the highest quality components for use in our pedals, but the right component for the sounds we’re trying to achieve. Sometimes it’s planned out from the start

Transistors Base Numbers AC to AUY | Cricklewood

ACY17 PNP TO5 Germanium Alloy 32/70V 1A 260mW hFE = [email protected]

AC188K PNP Germanium Transistors Fuzz Dog's Pedal

AC188K PNP germaniums perfect for all your fuzzy desires. Fresh from a previously unopened Tungsram factory bag from 1982. Liven up your Tone Bender,


When we get your inquiries, we will send tailored catalogue, pricelist, delivery, payment terms and other,required details to you by email within 24 hours..