OTL transistor audio radio amplifier UNBUILT electronic learning DIY projec KIT
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Yo Ho me hearties – Welcome to Pirate Pete Electronics – ARGHHH! OTL audio amplifier kit This is a low-cost reproduction version, of the Radio Shack Science Fair OTL audio amplifier P-Box kit. See our other listings for more reproduction kits, including our exclusive deluxed PC board versions. * – Kit utilizes a piece of 7×9 cm (2.75 x 3.5 inch), perfboard for assembly. It will be necessary for you to enlarge holes as necessary. * – Kit uses a PC board mount potentiometer. This is a higher quality, and easier to install part than the original. * – Kit uses carbon film resistors, and vertical style fahnestock clips. Three transistor circuit design, utilizing one vintage, germanium (TO-1 case), input transistor, and either vintage or modern driver and output transistors. Driver and output transistors are TO-39 and TO-3 case devices like the original. Kit includes a 4-AA battery cell holder, but does not include speaker. Comes with basic instructions, including parts list, schematic, layout diagram, assembly and operating notes. Assembled kits can not be returned. Note: This circuit design places half the DC supply voltage across the speaker. The output bias point can be reduced with the included trimmer. See our other listings for more Radio, Electronic and other RARE and UNIQUE items! The seller makes no representation of any item(s) sold to be fit for a particular purpose and assumes no liability for its use or misuse. It is assumed that the unit(s) will be installed and operated by qualified personnel. The purchaser agrees that the seller shall not be held responsible or liable for any injuries or damages, whether incidental or consequential, associated in any way with the item(s). Transistors have been checked and are good. See our other listings for our EXCLUSIVE line of PC board kits, including reproduction Knight Allied and Heathkit items.