Oc45 transistor

Find great deals on eBay for octransistor. In reality these two devices would be more accurately termed IF transistors. There is an ongoing market for the OCon eBay because it was used in some early guitar effects units (fuzz boxes) and purists. Same Day Dispatch, Shipping £2.

A range germanium transistors , majority unused old stock. All our transistors are fully tested unless stated otherwise, values for leakage and Hfe are included in listings.

OCdatasheet, cross reference, circuit and application notes in pdf format. The first germanium transistors that I encountered as a kid were the glass-encapsulated OCxx types - OC4 OC, OC7 OC81 OC8 etc. The latter types listed were often further encapulated in an aluminium can for improved heat dissipation - the OC81D was often used as a driver (ahead of an inter-stage phase-splitting transformer), and a pair of OCtypes formed the push-pull output stage.

Other germanium transistors and diodes. The OCand OCused in early transistor sets tend to be reliable. There are enough spares from scrap sets etc.

Much of the fun is in visiting these shops, and of course, you will be helping to keep the local businesses running. These of course are well known for developing internal short circuits, so many later sets are likely to pop when switched on but not receive anything.

This set is nicely intact and requires a major clean. Powered by a single 9v PPbattery. Transistor lineup OC4 OC, OC7 OC78D and OC78. Like many transistor radios of this era it has a socket for a car aerial in the.

These transistors are early types and tolerated very little power (milliwatts compared with the modern high power types), they also were prone to thermal runaway. They were fragile, a bit noisy — especialy the very first. Their leakage current, the generic defect of germanium transistors , is a bit higher than in later models. Visit Cricklewood Electronics for Professional CCTV Systems that give full security to the homeowner.

We offer high quality Home Security CCTV Systems. OC7 OC7 OC7 OCand OC- have a similar basic construction, the cross-section of which is represented diagrammatically in Fig. The base layer is square or rectangular. The construction of the OCand OCdiffers from this in that the base wafer is round and the connection to the base layer is made by a ring-shaped tab which surrounds but. I show it because my example is typical of many CV specimens in that it comes in a small paper envelope containing a paper label bearing the title VALVE ELECTRONIC, the part number and various other military designations.

Germanium OCin a black-painted glass package. A single OAdiode is used for developing the audio and AGC. One transistor design not an integrated circuit - be amazed at the quality from just a single transistor. Always know that you are connectedparent unit will alert when the power is low or if you a.

TRANSISTORS GUARANTEED TOP QUALITY Huge reduction. Red Spot standard LF type now only White Spot R. Does anybody have any suggestions of other transistor types to try in this position? Check price and availability. They show some of the variety of SO-packages used at this time. From the top, the OC2is an early.

This is where you will find all the transistors specifically in the OC series i. The design of early transistor radios directly followed tube designs except at lower voltages and the transistor was known as a current amplifying devices rather than a voltage amplifies devices that tubes were labeled. I hope this clears up some design concerns and please correct any of this if someone spots any errors. The Early Years and Lissen.

Britain was slow to electrify and many of the rural areas remained without electricity for a long time. Due to this there was a large battery market and for many years large numbers of radio batteries were s.