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Details about  OC81 Germanium Transistors Mullard

OC81 Germanium Transistors Mullard See original listing
OC81-Germanium-Transistors-Mullard
Item Ended
Item condition:
Used
Ended:
11 Jul, 2014 19:30:56 BST
Winning bid:
£3.97
2 bids ]
Postage:
£1.24 Standard Delivery | See details
Item location:
St. Leonards-on-Sea, United Kingdom

Description

eBay item number:
121378642151
Seller assumes all responsibility for this listing.

Item specifics

Condition:
Used: An item that has been previously used. The item may have some signs of cosmetic wear, but is fully ... Read moreabout the condition
MPN:

Mullard OC81 matched pair

Brand:

Mullard

Here, presented for sale via auction are two vintage Mullard OC81 germanium transistors. They were carefully de-soldered from a 1960s radio. These transistors are popular with fuzz box builders. They have been tested: One is 280 and the other 260 (so much for being a matched pair!) My Maplin Academy Gold PG-10B was used: These hfe readings are presented as a guide only and is not a guarantee. They've also been tested by insertion into a breadboard project amplifier that I uploaded to youtube: type in: 'my S-Dec Transformer Coupled Germanium Guitar Practice Amplifier' hoofbags, to view. Please excuse the garden gnome on guitar: he'd had a few! It can be seen that they work. In this instance, because germanium transistors are so easily damaged by reverse polarity, we can't offer a return upon refund guarantee, sorry. Reverse polarity damage is a common problem we encounter because most engineers assume that they've to connect VCC to positive. It cannot be stressed strong enough: VCC when using these is negative. We will send abroad if necessary but postage will be more, and assuming that there is one, the winning bidder can collect. In certain circumstances we can deliver, but please check with us first. Please see my other items, I've got quite a few of this type of thing to offer via auction.  

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