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Season's Greetings! Xmas holiday info: Orders placed between 23rd - 28th Dec will be dispatched on the 29th. (Also: Bear in mind it's now unlikely that overseas orders will arrive before xmas.)
ZX Spectrum Transistors
Some of the transistors originally used in the Spectrum are now obsolete - listed below are some suitable replacements.
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A general purpose NPN transistor that can be used to make an alternative version of composite video mod on the Spectrum. Using a transistor instead of a simple wire or capacitor provides a stronger signal, usually giving a brighter picture. It also buffers the Spectrum's video circuitry so much of the load is taken by this transistor. However, it may not be compatible with modern LCD TVs.
Transistor video mod connections:
Please see this article for details.
A cheaper replacement for the obsolete ZTX313 (has same pin-out / case orientation and approx same spec)