Vintage Sinclair Micromatic Transistor Radio " The World ' S Smallest Radio " 1967

The SinclairMicromatic was a two transistor AM pocket radio manufactured by theSinclair Corporation. This was the world’s smallest pocket radio designed andmarketed by Sir Clive Sinclair, one of the most successful British businessentrepreneurs of the 20th century. The radiocircuit utilised only four semiconductor devices consisting of two transistors, and two diodes. The transistors comprised of a pair of ME4102 devices normallyused for general-purpose amplifier applications. These ...were one of the earliestNPN silicon transistors with a maximum rated gain (hFE) of 600, and Ic of 1 mA.Today we would use something like the general-purpose BC549C with a gain (hFE)of 800, and Ic of 2 mA.The AFoutput of the circuit drives a crystal earpiece, which is the same type thatone would use for crystal radios. In 1965 the"Micro-FM" debuted as "the world"s first pocket-size FMtuner-receiver", but was unsuccessful due to technical difficulties.Despite problems, illegal clones were produced in the far-east. Sinclair'sfinal 1960s radio kit was the 1967 "Micromatic", billed as "theworld's smallest radio" like Sinclair's earlier radios. The"Micromatic" was a reasonable success and was sold until 1971.  Full boxwith instructionsUntested  Foradditional pictures and information please contact meForinternational shipping outside Europe the days for dispatch is Thurstday andWednesdayFor shippingin Europe the ship will be dispatch in two daysPlease checkall items in my storeAll the best Read more